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0 votes
4k views

Hello,

how can i implement a vertically stacked y axis chart like in your example (WPF Chart Vertically Stacked YAxis) with MVVM and a varying number of y axes. Your example has a fixed number of y axes and the needed YAxesPanel is directly implemented in your xaml code. What is the best way to achieve the same result with a varying number of y axis?

Best regards
Alexander

1 vote
8k views

Hi,

I’m creating a CustomChartModifier which I am able to hook to a SciStockChart (a template item in a SciChartGroup MVVM) and now I’m having difficulties in adding the BoxAnnotation to the Chart.

This is the code I’m using in my ChartModifier and placing a breakpoint shows me that indeed the code runs through this method, however, I do not see any BoxAnnotation on my chart? I’ve even tried adding the Height and Width properties without any further success. Other CustomModifiers to draw Lines and Ellipses works without problems. Do BoxAnnotations work differently?

I’m looking to have the the user be able to draw a BoxAnnotation on the chart, free hand / dynamically.

SimpleBoxAnnotationModifier.cs

public override void OnModifierMouseDown(ModifierMouseArgs e)
{
        base.OnModifierMouseDown(e);

        var resources = new AnnotationStyles();
        // x:Key="BoxAnnotationStyle" TargetType="s:BoxAnnotation"
        var style = (Style)resources["BoxAnnotationStyle"];

        _annotationCreation = new AnnotationCreationModifier () { AnnotationType = typeof(BoxAnnotation), AnnotationStyle = style };

        this.ModifierSurface.Children.Add(_annotationCreation);
}

AnnotationStyles.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                xmlns:s="http://schemas.abtsoftware.co.uk/scichart"
                x:Class="ChartModifierBinding.AnnotationStyles">

<Style x:Key="BoxAnnotationStyle" TargetType="s:BoxAnnotation">
    <Setter Property="BorderBrush" Value="#279B27"/>
    <Setter Property="Background" Value="#551964FF"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="IsEditable" Value="True"/>
</Style>

Thanks for any pointers or tips!

  • David T asked 7 years ago
  • last active 6 years ago
0 votes
6k views

I’m trying to set the visible range property of a CategoryDateTimeAxis through MVVM. I’m following the general instructions detailed here for converting between pixel & data coordinates on the axis:

https://www.scichart.com/questions/question/categorydatetimeaxis-in-mvvm#sabai-inline-nav

I have the following code in my viewmodel:

XAxis.OnBeginRenderPass();
var calc = XAxis.GetCurrentCoordinateCalculator();
var coordCalc = calc as ICategoryCoordinateCalculator;

XAxis is a CategoryDateTimeAxis injected from the view. I call OnBeginRenderpass as I saw in another forum post that this will ensure that the CoordinateCalculator is initialized.

calc shows in the debugger as:

  • calc {A.} Abt.Controls.SciChart.Numerics.CoordinateCalculators.ICoordinateCalculator {A.}

The coordCalc variable ends up assigned to NULL, as the ICoordinateCalculator< double > cannot be cast to the interface.

How do I accomplish the above?

Thanks, Asher

  • ashernew asked 7 years ago
  • last active 7 years ago
0 votes
6k views

There doesn’t seem to be a corresponding IRenderableSeries3DViewModel object like there is in the 2D charts. What am i suppose to bind to the RenderableSeries property of the SciChart3DSurface? If I bind to a

ObservableCollection<IRenderableSeriesViewModel>

object, then I don’t see a corresponding SurfaceMeshRenderableSeries3DViewModel object similar to LineRenderableSeriesViewModel for 2D?

A simple example of series binding using 3D charts would be great!

  • Andy None asked 6 years ago
  • last active 4 years ago
0 votes
4k views

How can I apply my style and template to my axes if I created the axes as NumericAxisViewModel in code and bound them to my SciChartSurface in my xaml view?

Regards,
Roland

  • Roland D asked 3 years ago
  • last active 2 months ago
0 votes
5k views

Hello support team.

I have a question about the resampling modes and their behavior.
I have a LineRenderableSeries with the resampling mode.mid. Therefore, depending on the zoom level and available pixels of the display screen, the information of the min and max values are lost. I had the idea to create a second LineRenderableSeries with the Opacity 0.5 and the ResamplingMode.Min Max. Thus I have behind the main line with the resampling mode.mid a “cloud” with the MinMax info. This allows the user to see this information as well. However, I would deactivate this cloud if it is not necessary due to the zoom level and the pixels.
How can I request this from SciChartControl? Or does it make more sense to use a different functionality?
I use the Mvvm classes LineRenderableSeriesViewModel, and XyDataSeries.

Thank you very much!

1 vote
6k views

Hi all,

I am trying to save a copy of my chart in form of a “Png” image. However I keep getting the following exception:

“Element already has a logical parent. It must be detached from the old parent before it is attached to a new one”

I was wondering if anyone could help me passing through this.

Here is what I do:

I have a main chart surface in my program of which properties are bound to my ViewModel. For instance, as can be seen from the snippet below, my SciChartSurface’s YAxes is bound to an AxisCollection that resides in my ViewModel. Same thing is done for the RenderableSeries, Annotations, ChartModifierGroup, ChartVisibility and the XAxis properties of my Chart Surface:

<sci:SciChartSurface Grid.Row="1" Grid.Column="0"  
                         RenderableSeries="{Binding SciChartSeriesViewModels}"    
                         Padding="0,8,0,2"                                         
                         sci:ThemeManager.Theme="BrightSpark"                                       
                         YAxes="{Binding SciChartYAxesCollection, Mode=TwoWay}"                                         
                         AutoRangeOnStartup="True"                                       
                         Annotations="{Binding ChartAnnotations}"                                     
                         x:Name="ApplicationSciChart"                                       
                         ChartModifier ="{Binding ChartModifierGroup}"
                         BorderBrush="LightSlateGray"
                         BorderThickness="1"
                         Visibility="{Binding ChartVisibility}"
                         XAxis="{Binding SciChartXAxis}">
    </sci:SciChartSurface>

Now, In order to save a copy of my chart into a “Png” file, I created a new SciChartsurface in my Viewmodel. This newly created chart is desired to be rendered in the memory so I can save it as an Image (Very similar to what is instructed in: Screenshots, Printing and Export to XPS Traingin module. Somewhere in my ViewModel, after I generated all the required data for creating my chart, I call a function to form a new SciChart (rendered in memory) and perform the saving action:

private void SaveChart()
    {
        SciChartSurface AppSciChart = new SciChartSurface()
        {
            RenderableSeries = SciChartSeriesViewModels,
            XAxis = new TimeSpanAxis(),
            YAxes = SciChartYAxesCollection,
            ChartTitle = "Rendered in memory",
            Annotations = ChartAnnotations
        };

        var parent = AppSciChart.Parent;
        AppSciChart.Width = 1920;
        AppSciChart.Height = 1080;

         ThemeManager.SetTheme(AppSciChart, "BrightSpark");
         AppSciChart.ExportToFile("C:\\Chart.png",SciChart.Core.ExportType.Png, false);

    }

The RenderableSeries, YAxis and Annotations of the Chart Surface in the above code (AppSciChart) are the same as the ones I used for my main chart in my XAML code (First Snippet above).

My main chart surface in my application shows up fine, and performs what it is supposed to, but as soon as the SaveChart() is called, the program stops with an Unhandled Exception: System.InvalidOperationException: ‘Element already has a logical parent. It must be detached from the old parent before it is attached to a new one.’

I was wondering if anybody could let me know what I am possibly missing here!

Many thanks!

0 votes
4k views

Hi! I have problems with visible range managing of a polar plot

The code in xaml:

<s:SciChartSurface graphModule:PlotLengthHelper.PlotLength="{Binding PlotLength, Mode=OneWayToSource,   UpdateSourceTrigger=PropertyChanged}" 
                       x:Name="ChartSurface"
                       SizeChanged="ChartSurface_OnSizeChanged"
                        ChartTitle="{Binding ChartTitle}"
                       s:ThemeManager.Theme="BrightSpark"
                        Annotations="{s:AnnotationsBinding Annotations}"
                       RenderableSeries="{s:SeriesBinding Series}"
                       XAxes="{s:AxesBinding XAxes}"
                       YAxes="{s:AxesBinding YAxes}"

First example. The code of the axis:

    var yAxis = new PolarYAxisViewModel {AutoRange = AutoRange.Never};
    YAxes.Add(yAxis);

Changing the VisibleRange of the axis has no any effect on the visible range of the graph. It sets automatically in the very first time and remains the same.

Second example.

    var yAxis = new PolarYAxisViewModel {AutoRange = AutoRange.Always};
    YAxes.Add(yAxis);

Changing the data (using line series) again has no any effect on the visible range of the graph. Again, it sets automatically in the very first time and remains the same.

Any suggestion on how to fix it? Especially the first case is required. Thanks.

1 vote
12k views

I am trying out SciChart ( and WPF ) for a large dataset and till so far very pleased with the results. I have followed the example as described here http://support.scichart.com/index.php?/Knowledgebase/Article/View/17258/0/creating-a-custom-scichartoverview-with-many-series-using-the-scrollbar-api and can successfully view my bound data and everything is perfect for the first instance.

However, when I assign this usercontrol to different tabs they still somehow share data about the viewstate ( the overview window does not resize, and the slider thing in front of it stays at the same values. My guess is that it has to do with the messages in ActualSizePropertyProxy , but since I am new to SciChart and WPF I was hoping that maybe someone here knows what it is.

Thanks.

  • Michel Moe asked 8 years ago
  • last active 3 years ago
1 vote
15k views

I am using the MVVM pattern.

I trying to manage the number of YAxes in my chart in a dynamic manner by binding the YAxes in the chart to a collection so that each time I add a new line series that line series gets its own axis.

When I do this I am getting a null reference expection.
If I hard code the YAxes or YAxis my chart loads.

Here is the xaml:

<SciChart:SciChartSurface x:Name="historicalChart" 
    RenderableSeries="{Binding HistoricalRenderableSeries, Mode=TwoWay}"
    YAxes="{Binding ChartYAxes, Mode=TwoWay}"
    SciChart:ThemeManager.Theme="ExpressionLight">
   ...
</s:SciChartSurface>

Here is the ViewModel

I tried both an ObservableCollection and a AxisCollection in my view model.

private ObservableCollection<NumericAxis> _chartYAxes = new ObservableCollection<NumericAxis>();
public ObservableCollection<NumericAxis> ChartYAxes
{
  get { return _chartYAxes; }
  set
  {
    _chartYAxes = value;
    NotifyPropertyChanged("ChartYAxes");
  }
}

private AxisCollection _chartYAxes = new AxisCollection();
public AxisCollection ChartYAxes
{
  get { return _chartYAxes; }
  set
  {
    _chartYAxes = value;
    NotifyPropertyChanged("ChartYAxes");
  }
}

Can anyone suggest a way to manage a variable number of YAxes in a chart?

  • sdemooy asked 10 years ago
  • last active 8 years ago
0 votes
5k views

Hello support team,

We have to realize the following request:
– Yt chart with DateTime as X-axis and double values on the Y-axis
– The chart should display a user-defined area on startup (e.g. 20 sec) After the chart has run for 20 seconds ( i.e. 20 seconds), the animated scrolling should start. By default, the chart behaves as follows: The X-axis area fills up to 20 seconds and then starts scrolling. We want the chart to display 20 seconds on the X-axis at the start and fill up.

I am aware that I can implement this behavior myself. However, the question arises whether I can realize this directly with a basic functionality.

Thank you!

0 votes
8k views

Hi,

I’ve been finding lots of examples of creating Custom Chart Modifiers however they are not using a SciChartGroup using a DataTemplate and not in a MVVM scenario.

I know MVVM is the preferred structure for WPF solutions, however it does introduces some complexities as well as using DataTemplates of a SciChartGroup, therefore, would someone please be so kind as to point me in the right direction for an example or two so that I can see how this all could work together?

I’m looking at Custom Chart Modifiers by use of a CustomModifier class. As this will give me the most flexibility in terms of what I would like to do in the future and I would also like to be able to switch between modifiers, such as Panning, Zooming and drawing annotations onto the chart.

Thanks everyone!

David

P.S. Andrew, if this requires a developer on your side to hash this out for an hour or so, let me know and I’ll be more than happy to pay for it.

  • David T asked 7 years ago
  • last active 7 years ago
0 votes
6k views

When I select a series/plot, I would like to identify where it came with more than just the Name member. How can I do that?

Background:
I have a list of unsigned integer values taken from a data logger. I bundle the values up in a class with some other information, such as the name of the sample and an ID string.

Since I can’t data bind to the logged samples as-is, I convert them to a SciChart friendly “LineRenderableSeriesViewModel” and add them to a list of “ObservableCollection” that I data bind to a SciChart.

ViewModel.cs:

// Where "loggedSamples" is a SamplesContainer 
//class SamplesContainer
//{
//    public string Name;
//    public string ID;  **<=== I want to get this somehow when I select something**
//    public Uint16 data {get;set;}
//}

// Convert Samples => XyDataSeries => LineRenderableSeriesViewModel

SamplesContainer loggedSamples = GetLoggedSample();
XyDataSeries<double, double> xySeries = ConvertSamplesToXyDataSeries(loggedSamples);
xySeries.SeriesName = loggedSamples.Name;

LineRenderableSeriesViewModel lineSeries = new LineRenderableSeriesViewModel() {
    DataSeries = xySeries, StyleKey = "LineStyle", Stroke = Colors.Blue };

RenderableSeriesViewModelForChannels.Add(lineSeries);

MainWindow.xaml:

   <s:SciChartSurface Name="sciChartItemView" Grid.Column="2"
    AllowDrop="True"
    DragDrop.Drop="sciChartItemView_Drop"
    DragDrop.DragEnter="sciChartItemView_DragEnter"
    MinHeight="80"
    s:ThemeManager.Theme="BrightSpark"  
    RenderableSeries="{s:SeriesBinding RenderableSeriesViewModelForChannels}"
    ViewportManager="{Binding SampleSetViewMod.ViewportManager}"                                                                           
    DebugWhyDoesntSciChartRender="True"
    s:SciChartGroup.VerticalChartGroup="sharedYAxisWidth"
    >

    <s:SciChartSurface.XAxis>
        <s:NumericAxis   
        DrawMajorGridLines="True"
        DrawMinorGridLines="False"
        DrawMajorBands="False"  
        VisibleRange="{Binding SampleSetViewMod.SharedXVisibleRange, Mode=TwoWay}"
        Visibility="Hidden" 
        TextFormatting="0.######"/>
    </s:SciChartSurface.XAxis>

    <s:SciChartSurface.YAxis>
        <s:NumericAxis AxisAlignment="Left"
        DrawMajorGridLines="False"
        DrawMinorGridLines="False"
        DrawMajorBands="False"
        Visibility="Visible">
            <s:NumericAxis.GrowBy>
                <s:DoubleRange Min="0.1" Max="0.1" />
            </s:NumericAxis.GrowBy>
        </s:NumericAxis>

    </s:SciChartSurface.YAxis>

    <s:SciChartSurface.ChartModifier>
        <s:ModifierGroup>
            <s:ZoomExtentsModifier XyDirection="YDirection"/>

            <s:ZoomPanModifier ExecuteOn="MouseMiddleButton" XyDirection="XYDirection" ClipModeX="ClipAtExtents" />

            <local:ExtendedMouseWheelZoomModifier />

            <s:RubberBandXyZoomModifier IsEnabled="True"
                IsXAxisOnly="False"
                ReceiveHandledEvents="True" />
            <s:LegendModifier ShowLegend="True" Orientation="Vertical" Margin="10"
                GetLegendDataFor="AllSeries"
                ShowVisibilityCheckboxes="False" 
                HorizontalAlignment="Right"
                LegendPlacement="Inside"
                Background="White"
                />

            <local:ExtendedSeriesSelectionModifier SelectionChanged="SeriesSelectionModifier_OnSelectionChanged">
                <local:ExtendedSeriesSelectionModifier.SelectedSeriesStyle>
                    <Style TargetType="s:FastLineRenderableSeriesForMvvm">
                        <Setter Property="StrokeDashArray" Value="10,5"/>
                    </Style>
                </local:ExtendedSeriesSelectionModifier.SelectedSeriesStyle>
            </local:ExtendedSeriesSelectionModifier>


            <!--<s:CursorModifier x:Name="cursorModifier" IsEnabled="True" />
        <s:RolloverModifier x:Name="rolloverModifier" IsEnabled="True"/>-->
        </s:ModifierGroup>
    </s:SciChartSurface.ChartModifier>
</s:SciChartSurface>
0 votes
792 views

Is there a way to apply functionalities on signals as in average, slope, etc. ?

Thank you
Anders

0 votes
5k views

How to programmatically add Scrollbars to MVVM instantiated axes?

I added DateTimeAxisViewModel and NumericAxisViewModel to my code. That works from so far. A way to add scrollbars i couldnt find a some tries.

Are there some ways to get this done? Maybe change the templates of the axes or the chart?

Best regards

0 votes
5k views

I’m trying to implement custom annotations using the MVVM pattern. I’ve been using your tutorial as an example (https://www.scichart.com/databinding-annotations-with-mvvm/). Everything works as expected if I manually load some example data to the annotations collection. When I actually try to load the data from our database using async method, the annotations are no longer drawn.

Is this by design or am I doing something wrong? Do you have any suggestions how to load annotations when using async code and MVVM patterns? I haven’t had any problems loading the actual time series on the chart using the same pattern.

I also tried binding the SciChartSurface’s Annotations property to AnnotationCollection and then calling ChartAnnotations.ParentSurface.InvalidateElement(), but the issue still persists.

You can easily reproduce this behavior by adding an async call to the examples’s source code:

private async Task Initialize()
{
    var ds0 = new XyDataSeries<double, double>();
    var someData = new RandomWalkGenerator().GetRandomWalkSeries(200); // RandomWalkGenerator is found in the examples source code

    ds0.Append(someData.XData, someData.YData);

    _chartSeries = new ObservableCollection<IChartSeriesViewModel>();
    _chartSeries.Add(new ChartSeriesViewModel(ds0, new FastLineRenderableSeries()));

    // Now create the labels
    _chartLabels = new List<LabelViewModel>
                       {
                           new LabelViewModel(5, -2.5, "Label0", "Label0 Tooltip!"),
                           new LabelViewModel(20, -2, "Label1", "Label1 Tooltip!"),
                           new LabelViewModel(35, 3, "Label2", "Label2 Tooltip!"),
                           new LabelViewModel(50, 1.5, "Label3", "Label3 Tooltip!"),
                       };

    await Test();

    _chartLabels.Add(new LabelViewModel(65, -0.5, "AFTER ASYNC", "Label4 Tooltip!"));
}

private async Task Test()
{
    await Task.Delay(5000);
}
  • Juho asked 6 years ago
  • last active 6 years ago
0 votes
2k views

Hi,
I’m experimenting with the LegendModifier and want to control which RenderableSeries are shown via the “LegendItemTemplate” approach. The idea is to add a specific tagging class to the RenderableSeries.DataSeries.Tag and use the content inside the LegendItemTemplate which I define in the Window.Resouces.

The tagging Class:

public class DataSeriesTag
{
    public string LegendText { get; set; }
    public bool ShowLegend { get; set; }
}

The LegendItemTemplate:
<Window.Resources>


<Grid.ColumnDefinitions>

</Grid.ColumnDefinitions>

            <!--<CheckBox Width="16" Margin="5,0,0,0"
                HorizontalAlignment="Left"
                VerticalAlignment="Center"
                IsChecked="{Binding RenderableSeries.IsVisible, Mode=TwoWay}"
                Visibility="{Binding RenderableSeries.DataSeries.Tag.ShowLegend, Converter={dxmvvm:BooleanToVisibilityConverter}}" />-->

            <s:PointMarker Grid.Column="1" Margin="5,0,0,0" Width="40" Height="10" VerticalAlignment="Center" HorizontalAlignment="Center"
              DataContext="{Binding RenderableSeries}"
              DeferredContent="{Binding LegendMarkerTemplate}"
              Visibility="{Binding ShowSeriesMarkers, RelativeSource={RelativeSource AncestorType=s:SciChartLegend}, Converter={dxmvvm:BooleanToVisibilityConverter}}" />

            <TextBlock Margin="5,0,5,0"
     Grid.Column="2"
     HorizontalAlignment="Left"
     Text="{Binding RenderableSeries.DataSeries.Tag.LegendText}" />

        </Grid>
    </DataTemplate>
</Window.Resources>

As long as I declare the SciChartSurface.ChartModifier in XAML, it works perfect.
The proplem raises when I bind the ModifierGroup to a ViewModel Property and try to build the LegendModifier there. How can I assign the LegendItemTemplate in the ViewModel?:

legendModifier = new LegendModifier(){
            ShowLegend = true,
            ShowVisibilityCheckboxes = false,
            LegendItemTemplate = ??????
        };
        TheModifiers.ChildModifiers.Add(legendModifier);

Kind regards
Martin

0 votes
5k views

Hi,

CompositeAnnotation works perfectly and easy to use, but I need it in MVVM. CompositeAnnotationViewModel looks the same, but it is not visible. This is my code:

AnnotationViewModels.Add(new CompositeAnnotationViewModel()
{
    Annotations = new ObservableCollection<IAnnotationViewModel>()
    {
        new VerticalLineAnnotationViewModel
        {
            VerticalAlignment = VerticalAlignment.Stretch,
            Stroke = Colors.Blue,
            StrokeThickness = 2,
            IsEditable = true,
            StrokeDashArray = new DoubleCollection() { 2, 2 },
            CoordinateMode = AnnotationCoordinateMode.Relative,
            X1 = 0
        },
        new VerticalLineAnnotationViewModel
        {
            VerticalAlignment = VerticalAlignment.Stretch,
            Stroke = Colors.Blue,
            StrokeThickness = 2,
            IsEditable = true,
            StrokeDashArray = new DoubleCollection() { 2, 2 },
            CoordinateMode = AnnotationCoordinateMode.Relative,
            X1 = 1
        }
    },
    IsEditable = true,
    X1 = 3,
    X2 = 5
});

What is my mistake?

0 votes
2k views

Getting an exception when trying to add tooltip template MVVM style to a blox plot. The chart also contains a scatter plot which should not be styled. That works fine, hoverwer, when I move the mouse over a box in the box plot, the exception is thrown.

I want to keep the styling, I just want to write something different than the default text.

The template:

  <DataTemplate DataType="scalarPlot:ToolTipData" x:Key="BoxSeriesTooltipTemplate">
    <TextBlock>
      <Run Text="Max:      " />
      <Run Text="{Binding Maximum}" />
      <LineBreak />
      <Run Text="P90:       " />
      <Run Text="{Binding P90}" />
      <LineBreak />
      <Run Text="Median: " />
      <Run Text="{Binding Median}" />
      <LineBreak />
      <Run Text="P10:       " />
      <Run Text="{Binding P10}" />
      <LineBreak />
      <Run Text="Min:       " />
      <Run Text="{Binding Minimum}" />
      <LineBreak />
    </TextBlock>
  </DataTemplate>

The binding:

      <Style TargetType="s:BaseRenderableSeries" x:Key="BoxSeriesStyle">
        <Setter Property="s:TooltipModifier.TooltipTemplate" Value="{StaticResource BoxSeriesTooltipTemplate}"/>
        <Setter Property="s:TooltipModifier.IncludeSeries" Value="True"/>
      </Style>

The modifier:

<s:SciChartSurface.ChartModifier>
      <s:ModifierGroup>
        <s:TooltipModifier IsEnabled="True" ShowTooltipOn="Always" ReceiveHandledEvents="True" TooltipLabelDataContextSelector="{Binding ToolTipDataContext}"/>
      </s:ModifierGroup>
    </s:SciChartSurface.ChartModifier>

The view model:

    private static IRenderableSeriesViewModel CreateBoxPlotViewModel(BoxPlotDataSeries<int, float> boxPlotDataSeries)
    {
        return new BoxPlotRenderableSeriesViewModel
        {
            DataSeries = boxPlotDataSeries,
            Stroke = Colors.SteelBlue,
            Fill = new LinearGradientBrush(Colors.White, Colors.LightSteelBlue, new System.Windows.Point(0, 0), new System.Windows.Point(0.5, 1)),
            StyleKey = "BoxSeriesStyle"
        };
    }

The data context selector:

    public Func<SeriesInfo, object> ToolTipDataContext
    {
        get
        {
            return seriesInfo =>
                   {
                       return seriesInfo switch
                       {
                           BoxPlotSeriesInfo boxInfo =>
                               new ToolTipData
                               {
                                   Fill = seriesInfo.Fill,
                                   Stroke = seriesInfo.Stroke,
                                   Maximum = (float) boxInfo.MaximumValue,
                                   P90 = (float) boxInfo.UpperQuartileValue,
                                   Median = (float) boxInfo.MedianValue,
                                   P10 = (float) boxInfo.LowerQuartileValue,
                                   Minimum = (float) boxInfo.MinimumValue
                               },
                           _ => seriesInfo
                       };
                   };
        }
    }
  • Tore Munch asked 2 years ago
  • last active 2 years ago
0 votes
12k views

I am directly editing my XyDataSeries on a chart by using my mouse. As the mouse moves I edit either the x or y value of a point using the methods

    public void SetPointYValueAt(IDataSeries series, int index, double newValue)
    {
        series.YValues[index] = newValue;
        series.InvalidateParentSurface(RangeMode.None);
    }

    public void SetPointXValueAt(IDataSeries series, int index, double newValue, double xMin, double xMax)
    {
        var xValue = newValue;

        // limit x values to keep them sorted
        if (xValue < xMin) xValue = xMin;
        if (xValue > xMax) xValue = xMax;
        series.XValues[index] = xValue;

        series.InvalidateParentSurface(RangeMode.None);
    }

With this code I am not getting an update at my ViewModel:

    public IDataSeries<double, double> MyDataSeries
    {
        get { return _myDataSeries; }
        set
        {
            _myDataSeries = value;
            OnPropertyChanged("MyDataSeries");
        }
    }

Here is my XAML:

            <sciChartExtensions:StepLineRenderableSeries x:Name="HResitivitySeries" IsDigitalLine="True" DataSeries="{Binding MyDataSeries, Mode=TwoWay}">

Where StepLineRenderableSeries is derived from FastLineRenderableSeries with IsDigitalLine = true and the HitTest method overridden.

How can I get MyDataSeries to update?

1 vote
8k views

Hello,

My goal is to have the user select a series with a mouse click, and to see which series was selected while following the MVVM pattern. I am filling in the DataSeries using a LineSeriesSource attached behaviour.

What I tried so far is to attach to the SelectionChanged event of a Renderable series with an Interaction Trigger.

This doesn’t work:

        <SciChart:SciChartSurface.ChartModifier>

            <SciChart:ModifierGroup>

                <SciChart:SeriesSelectionModifier >
                    <i:Interaction.Triggers>
                        <i:EventTrigger EventName="SelectionChanged" >
                            <i:InvokeCommandAction Command="{Binding Path=cmdSelectedSeriesChanged}" CommandParameter="{Binding Path=SelectedSeries}"/>
                        </i:EventTrigger>
                    </i:Interaction.Triggers>
                    <SciChart:SeriesSelectionModifier.SelectedSeriesStyle>
                        <Style TargetType="SciChart:BaseRenderableSeries">
                            <Setter Property="Stroke" Value="White"/>
                            <Setter Property="StrokeThickness" Value="2"/>
                        </Style>
                    </SciChart:SeriesSelectionModifier.SelectedSeriesStyle>
                </SciChart:SeriesSelectionModifier>

        </SciChart:ModifierGroup>
        </SciChart:SciChartSurface.ChartModifier>

This works, but is not what I want since it’s not MVVM:

<SciChart:SciChartSurface.ChartModifier>

                <SciChart:ModifierGroup>

                    <SciChart:SeriesSelectionModifier SelectionChanged="SeriesSelectionModifier_SelectionChanged">

                        <SciChart:SeriesSelectionModifier.SelectedSeriesStyle>
                            <Style TargetType="SciChart:BaseRenderableSeries">
                                <Setter Property="Stroke" Value="White"/>
                                <Setter Property="StrokeThickness" Value="2"/>
                            </Style>
                        </SciChart:SeriesSelectionModifier.SelectedSeriesStyle>
                    </SciChart:SeriesSelectionModifier>

            </SciChart:ModifierGroup>
            </SciChart:SciChartSurface.ChartModifier>

Interaction Propety cannot be attached to SciChartSurface.RenderableSeries.
I also tried attaching the Interaction Property to an individual DataSeries, which is definitely not what I want to do, but it doesn’t work either.

/Tomasz

0 votes
3k views

Hi
I’m trying to use AvaloniaUI with .NET Core 3.1 to create an application using SciChart, but I get XAMLIL error when trying to add a SciChartSurface following the code from the tutorial. I used a standard Avalonia MVVM Application template when creating the project.

This is the code:

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:s="http://schemas.abtsoftware.co.uk/scichart"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="FF_DataVis_Avalonia_MVVM.Views.TabControlView">

    <Grid>
        <!-- Bind to ChartViewModel.ChartTitle etc -->
        <s:SciChartSurface ChartTitle="{Binding ChartTitle}">
            <s:SciChartSurface.XAxis>
                <s:NumericAxis AxisTitle="{Binding XAxisTitle}"/>
            </s:SciChartSurface.XAxis>
            <s:SciChartSurface.YAxis>
                <s:NumericAxis AxisTitle="{Binding YAxisTitle}"/>
            </s:SciChartSurface.YAxis>
        </s:SciChartSurface>
    </Grid>
</UserControl>

And the error I get is:
“XAMLIL: Unable to resolve type SciChartSurface from namespace http://schemas.abtsoftware.co.uk/scichart Line 27, position 4″
which is the first s:SciChartSurface entry.

Any ideas what might be wrong? Does SciChart not work with any framework regardless of using .NET Core 3.0?
I have tried changing between Core 3.0 and 3.1, which does nothing.

0 votes
2k views

Hi sir,

We would like to build a real time updated stackedcolumn chart in mvvm mode.
Is that possible? (x-axis on the left side)(y-axis on the bottom side which can keep update with only 10mins range)

I wonder can I use the StackedColumnRenderableSeriesForMvvm?
I found out this control but have no idea how to use it…

  • Wade Yao asked 1 year ago
  • last active 1 year ago
1 vote
6k views

I think this is a pretty simple question but i am not sure what i am missing.I have a toggle button on my legend that is intended to allow the users to select all the series or deselect all the series.
the button essentially goes through the Renderable series view models and set the IsSelected to either true or false, this approach however, doesn’t work. I looked at the SelectionModifier and i can see that has a protected DeselectAll method and i am thinking to leverage that to solve this use case.

what is the best solution to accomplish this? isn’t this functionality something that perhaps be standard and could just be turned on?

0 votes
6k views

Hi there,

I am relatively new to C# and scicharts so you will have to forgive me a little.

In the project I am working on, I am trying to add dynamic renderable series as the user selects items in a tree. I have looked through the online tutorials and forums but still am having trouble. I am creating my own renderable series view model class derived off of LineRenderableSeriesViewModel. I found documentation that I needed to override the ViewType property and set it to a FastLineRenderableSeriesForMvvm.

When I am creating these objects to add to the ObservableCollection which is bound to my scichart surface, I can set the PointMarker and its properties, but not the SelectedPointMarker properties.

XAML:

    <s:SciChartSurface Style="{StaticResource BasicSciChartSurfaceStyleRateVsTime}"
                       ViewportManager="{Binding RateVsTimePlot.Manipulator.Viewport}"
                       Name="RateVsTime" x:FieldModifier="private"
                       ZoomHistoryManager="{Binding RateVsTimePlot.ZoomHistory}"
                       PreviewMouseLeftButtonDown="PreviewRateVsTimeMouseLeftButtonDown"
                       PreviewMouseLeftButtonUp="PreviewRateVsTimeMouseLeftButtonUp"
                       RenderableSeries="{s:SeriesBinding RateVsTimePlot.RenderableSeriesViewModels}"
                       local:YAxesCollectionBehaviour.AxisSource="{Binding RateVsTimePlot.YAxesViewModels}"
                       local:YAxesCollectionBehaviour.AxisStyle="{StaticResource AxisStyle}"/>         

Style:

<Style x:Key="ProdLineStyle" TargetType="s:FastLineRenderableSeriesForMvvm">
    <Setter Property="s:TooltipModifier.IncludeSeries" Value="False"/>
    <Setter Property="SelectedPointMarker">
        <Setter.Value>
            <s:EllipsePointMarker Fill="{Binding SeriesColors.ProductionColor}"
                                  Stroke="{Binding SeriesColors.ProductionColor}"
                                  Width="6" Height="6">
            </s:EllipsePointMarker>
        </Setter.Value>
     </Setter>
</Style>

ViewModel :

        var renderableSeries = new GenericRenderableSeriesViewModel
        {
            DataSeries = dataSeries.DataSeries,
            YAxisId = dataSeries.AxisId,
            IsSelected = IsSelected,
            SeriesColors = _dataColors[fluidRateType],
            DisplayEnabled = AnalysisInteractionMode.IsLineManipulationDisabled,
            PointMarker = new EllipsePointMarker(),
            StyleKey = "ProdLineStyle"
        };

        renderableSeries.SetRenderableSeriesColorSettings();

        renderableSeries.DataSeries.SeriesName = fluidRateType.ToString();
        return renderableSeries;

public void SetRenderableSeriesColorSettings()
    {
        Stroke = SeriesColors.ProductionColor;

        if (PointMarker == null) return;

        PointMarker.Stroke = SeriesColors.ProductionColor;
        PointMarker.Fill = SeriesColors.ProductionColor;
        PointMarker.Height = PointNonSelectedHeight;
        PointMarker.Width = PointNonSelectedWidth;
    }

When I run my app, I see what I am expecting by default, but when I do a point selection rectangle, the behavior is not correct. I only see the line. The points with in the rectangle disappear.

I am trying to move away from having the style set the selectedPointMarker, and doing it through code in the view model just like the function above as users will be able to change these properties in the future. But so far I haven’t found a way to do either.

Am I using the correct classes, or do I need to override something else? Any ideas or suggestions would be greatly appreciated

Thanks
Rylan

0 votes
2k views

Hi SciChart team,

I have built a xyscatter chart with DateTime type X-Axis and Double type Y-Axis,
and built boxannotations to mark areas.

May I set the x-Axis value in the tooltip?
Or can I show properties of each item which means every point in the xyscatterseries, and customize the tooltip content style like adding the description of every properties.

  • Wade Yao asked 1 year ago
  • last active 1 year ago
1 vote
4k views

Hello, SciChart Team!
i have an issue using mouse drag event ( RubberBandXyZoomModifier, ZoomPanMidifier). the message says “NullReferenceException in SciChart.Charting.dll ” or “Thread.cs not found” from time to time.
after some experiments i figured out that the app starts to crush after i change XAxis type .
i have a simple mvvm user control used to display both arrays of double and datebound data, XAxes of SciChart Surfase is bound to an observable collection of IAxis elements. if i need to change chart type i clear this collection and create an axis of desired type (DateTimeAxisViewModel or NumericAxisViewModel). after that the series can be added, but zooming causes crash with nearly to no info.

i attached a solution, which lacks only scichart dlls in order to run (hopefully), Window_Loaded method has a commented line which changes chart type and makes app crush on zooming, would be nice if you checked it out.
Thanks in advance!
Alexander

1 vote
10k views

I would like to template items of an AxisCollection assigned to a sciChartSurface in binding of an AxisItemCollectionViewModel. But it looks like I cannot do it as Visual Studio won’t compile my tries.

What i am looking for is something like the EEG 16 channel sample. There the ListBoxItems are styled via a template which is bound to a ViewModelItem. The ListBox itsself is bound to a ViewModelCollection. Depending on how many entries there are entries in the listbox.

So I would like to do something like this:

<SciChartSurface.AxisCollection ItemsSource="{Binding MyAxisCollectionViewModels}" ItemTemplate="{StaticResource AxisItemTemplate}" />

Is this possible? I don’t know how many y-axes i will have. They are configurable by the user.

  • Uwe Hafner asked 8 years ago
  • last active 8 years ago
0 votes
1k views

Hi,

I am developing an MVVM WPF application and need to access the SelectedPointMarkers property of DataPointSelectionModifier from the ViewModel.

From looking at the DataPointSelectionModifier documentation (https://www.scichart.com/documentation/win/current/webframe.html#DataPoint%20Selection.html) I can see how you can get the X and Y coordinate values of a selected point in a view, by binding the PointMarkersSelectionModifier to a listbox.

However this doesn’t really help me, I need to get the coordinates of the SelectedPointMarker into a property inside the ViewModel that can be accessed, rather than just binding to a listbox in the view itself.

I’ve also looked at this similar post: (https://www.scichart.com/questions/wpf/i-want-to-bind-selectedpointmarkers-of-datapointselectionmodifier), but I had no luck getting Kenishis solution to work in my case.

How can i do this?

Thanks.

0 votes
4k views

Hello support team,

We are currently starting a complete redesign of our SciChart implementation from V3.x to V5.x. In V5.x the MVVM pattern is now supported and we would like to use this.
Our main focus is on the performance of the SciChart component. Now the question arises whether the use of the MVVM API is questionable for exactly this reason (performance).
Does it make a big difference whether I address the series directly or via the MVVM API?
Thank you very much for your support!

1 vote
7k views

I’m implementing a toggle between joined and separated axes for my series and I’ve encountered a problem with my SeriesValueModifiers. The modifier seems to be connected to “DefaultAxisId”, when I have my series linked to an axis with that ID the values show up as expected. However, when I separate my series to individual axes the modifiers no longer appears.

Is it possible to collect and show all my SeriesValueModifiers on one axis (keeping the others invisible)? Or perhaps show modifiers on all the axes and stack them on top of each other, keeping labels invisible.

This is the code I’ve got right now:

Adding an axis in my constructor, this one will be used when all the series are using the same axis.

ChartYAxes.Add(new NumericAxis()
{
    Visibility = Visibility.Visible,
    AutoRange = AutoRange.Always,
});

Then I add a new axis for each series.

ChartYAxes.Add(new NumericAxis
{
    Id = tagName,
    Visibility = Visibility.Collapsed,
    AutoRange = AutoRange.Always
});

var renderableSeries = new FastLineRenderableSeries
{
    YAxisId = IsIsolatedCharts ? tagName : "DefaultAxisId"
};

Toggling between these works great, but I need the value labels for this to be useful in any way.

EDIT: In case it’s relevant, here’s the code for toggling.

private void SplitAxes()
{
    var count = Series.Count;
    for (int i = 0; i < count; i++)
    {
        var series = Series[i];
        var name = series.DataSeries.SeriesName;
        //The axes are also added to a dictionary for easy access.
        _axisDictionary[name].GrowBy = new DoubleRange(count - i - 1, i);
        series.RenderSeries.YAxisId = name;
    }
}

private void JoinAxes()
{
    foreach (var series in Series)
        series.RenderSeries.YAxisId = "DefaultAxisId";
}
0 votes
5k views

Hi,
I’m prototyping an application with two visible data series and an individual Y-axis for each data series. See the enclosed image.
The Stroke color of each data series, the TickTextBrush and the BorderBrush of the y-axis are updated by normal data Binding through the MVVM pattern.
The problem is that I am not able to data bind the Stroke property of the MajorTickLineStyle for the individual Y-axis.
Do You know if there is a workaround for this through data binding?
The project is enclosed.

  • andreasrep asked 6 years ago
  • last active 6 years ago
0 votes
1k views

Hi,

I’m trying to evaluate the reality of creating multiple realtime charts and I’m hitting a huge performance brick wall.

My application will have high speed streamed data coming in over ethernet. Currently I’m simulating this with a thread timer that updates 100 data objects at 60Hz. Screen data and chart updates I’ve got throttled to 30Hz but it’s still grinding my charts are still struggling. If I move the mouse pointer the charts freeze entirely until the mouse is still.

I want the end user to be able to choose any data object and chart it however they want. Adding charts and adding plots to charts etc. To enable this I’ve created a chart template as a user control and at runtime the charts are added to a panel on a tab control. Event one chart on one tab chugs though. Move the mouse over it and it locks up.

I have a single overview chart with a scrollbar over the top on the parent control. I need this to control the cursor (vertical line) and shared X visible range. Live data is Fifo limited to a 10 second range. All this works, just painfully slowly.

SharedXVisible range is MVVM bound. Renderable series is LineRenderableSeriesViewModel and data is pushed at 30Hz from a Data provider as per this tutorial:
https://www.scichart.com/documentation/win/current/Tutorial%2006b%20-%20Adding%20Realtime%20Updates%20with%20MVVM.html

CPU usage is sub 20%. Max frame rate is 30fps. Render priority doesn’t seem to make much difference, though “immediate” will lock up the whole app. I’m no expert at performance profiling but I’m not getting any clues from ReShaper dotTrace so far.

I tried creating a version that hand almost no binding and used codebehind to update the data. It didn’t seem to help. I’d rather not do this though as I have a lot of things working that I like such as vertical slice, annotations, templates etc.

I’ve got a list of all the live data on the right of the screen and it all updates rapidly, even while the mouse is moving and the charts are frozen.

I’m also using some Syncfusion controls and theming, if it matters.

I must be missing something obvious surely.

<!--  Define Chart  -->
        <s:SciChartSurface x:Name="chart" Grid.Row="0" Grid.Column="0"
                           Background="Black"
                           RenderPriority="low"
                           MaxFrameRate="30"
                           RenderableSeries="{s:SeriesBinding RenderableSeriesCollection}"
                           >

            <!--  Define X and Y Axis  -->
            <s:SciChartSurface.YAxis>
                <s:NumericAxis AutoRange="{Binding AxisYRangeMode}" 
                               DrawMajorBands="False" 
                               DrawMinorGridLines="false" 
                               DrawMajorGridLines="True" 
                               DrawMajorTicks="False" 
                               DrawMinorTicks="False" 
                               VisibleRange="{Binding AxisYVisibleRange}" />
            </s:SciChartSurface.YAxis>

            <s:SciChartSurface.XAxis>
                <s:NumericAxis AutoRange="{Binding AxisXRangeMode}" 
                               BorderBrush="{StaticResource BorderBrushGray}" 
                               BorderThickness="1" 
                               DrawMajorBands="False" 
                               DrawMinorGridLines="False" 
                               DrawMajorGridLines="True" 
                               DrawMajorTicks="False" 
                               DrawMinorTicks="False" 
                               TextFormatting="0" 
                               VisibleRange="{Binding SharedXVisibleRange, Mode=TwoWay}" 
                               s:VerticalSliceModifier.AxisLabelContainerStyle="{x:Null}"/>
            </s:SciChartSurface.XAxis>

            <!--  Modifiers  -->
            <s:SciChartSurface.ChartModifier>
                <s:ModifierGroup>
                    <s:RubberBandXyZoomModifier 
                        IsXAxisOnly="True" 
                        ZoomExtentsY="True" 
                        IsAnimated="True" 
                        RubberBandFill="#20FFFFFF" 
                        RubberBandStroke="GreenYellow" 
                        RubberBandStrokeDashArray="2 2">
                    </s:RubberBandXyZoomModifier>

                    <s:ZoomExtentsModifier IsAnimated="True"/>

                    <s:MouseWheelZoomModifier IsEnabled="True"/>

                    <s:XAxisDragModifier IsEnabled="True" DragMode="Pan"/>

                    <s:LegendModifier x:Name="legendModifier"
                                      Background="Transparent" 
                                      Margin="10" 
                                      GetLegendDataFor="AllSeries" 
                                      LegendItemTemplate="{StaticResource CustomLegendTemplate}" 
                                      ShowLegend="True" ShowVisibilityCheckboxes="True"/>

                    <s:VerticalSliceModifier Name="sliceModifier">

                    <s:VerticalSliceModifier.VerticalLines>
                            <s:VerticalLineAnnotation Style="{StaticResource sliceStyle}" 
                                                      X1="{Binding SlicePosition, Mode=TwoWay}"/>
                        </s:VerticalSliceModifier.VerticalLines>
                    </s:VerticalSliceModifier>

                </s:ModifierGroup>
            </s:SciChartSurface.ChartModifier>
        </s:SciChartSurface>

Thanks in advance,
Declan.

PS. I’m trying to attach a screenshot but it keeps saying “Forbidden”.

1 vote
10k views

Hello,

I have a scichart and bound to its VM class. Inside this VM there is a Highlights property.

On the MainWindow, I am placing two of this charts with their own VM instance.

The problem is that when the Annotations is bound, it is only drawn on the last chart as shown in the image.

If I manually code in xaml the annotations (no binding) then the annotations are drawn in both charts.

How can I make it work with the binding?

Thanks

  • Miguel Hau asked 8 years ago
  • last active 8 years ago
0 votes
4k views

Hello!

I am trying to programmatically set a range for HeatmapColorPalette and attached HeatmapColorMap to min and max of my data.

Binding HeatmapColorPalette.Maximum to a property in my View Model works well. However, when I add HeatmapColorMap everything breaks, the heat map no longer responds to changes in View Model.

What am I doing wrong?

Here is my View:

<Window x:Class="SciChartHeatMap.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:SciChartHeatMap"
    xmlns:s="http://schemas.abtsoftware.co.uk/scichart"
    d:DataContext="{d:DesignInstance Type=local:HeatMapViewModel, IsDesignTimeCreatable=True}"
    mc:Ignorable="d"
    Title="MainWindow" Height="450" Width="800">
<Grid>
    <Grid.Resources>
        <s:GradientStopsToLinearGradientBrushConverter x:Key="ColorsToLinearGradientBrushConverter"/>
    </Grid.Resources>
    <Grid.ColumnDefinitions>
        <ColumnDefinition/>
        <ColumnDefinition Width="Auto"/>
        <ColumnDefinition Width="Auto"/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition/>
    </Grid.RowDefinitions>
    <s:SciChartSurface Grid.Row="0" Grid.RowSpan="2">
        <s:SciChartSurface.RenderableSeries>
        <s:FastUniformHeatmapRenderableSeries x:Name="HeatMapSeries" DataSeries="{Binding Data}" Opacity="0.9">
            <s:FastUniformHeatmapRenderableSeries.ColorMap>
                <s:HeatmapColorPalette Maximum="{Binding ColorMaximum}">
                    <s:HeatmapColorPalette.GradientStops>
                        <GradientStop Offset="0" Color="DarkBlue"/>
                        <GradientStop Offset="0.2" Color="CornflowerBlue"/>
                        <GradientStop Offset="0.4" Color="DarkGreen"/>
                        <GradientStop Offset="0.6" Color="Chartreuse"/>
                        <GradientStop Offset="0.8" Color="Yellow"/>
                        <GradientStop Offset="1" Color="Red"/>
                    </s:HeatmapColorPalette.GradientStops>
                </s:HeatmapColorPalette>
            </s:FastUniformHeatmapRenderableSeries.ColorMap>
        </s:FastUniformHeatmapRenderableSeries>
        </s:SciChartSurface.RenderableSeries>
        <s:SciChartSurface.XAxis>
            <s:NumericAxis 
                FlipCoordinates="False" 
                ScientificNotation="None" 
                AutoTicks="False"
                MajorDelta="1"
                MinorDelta="0.5"
                AxisAlignment="Top"/>
        </s:SciChartSurface.XAxis>
        <s:SciChartSurface.YAxis>
            <s:NumericAxis 
                FlipCoordinates="True" 
                ScientificNotation="None"
                AxisAlignment="Left"/>
        </s:SciChartSurface.YAxis>
    </s:SciChartSurface>

    <!-- Enabling this will break the program
    <s:HeatmapColorMap
        Grid.Column="1"
        Grid.Row="0"
        Grid.RowSpan="2"
        Margin="5,0,5,0"
        HorizontalAlignment="Right"
        VerticalAlignment="Stretch"
        DataContext="{Binding Source={x:Reference Name=HeatMapSeries}, Mode=OneWay}"
        ColorMap="{Binding ColorMap.GradientStops, Converter={StaticResource ColorsToLinearGradientBrushConverter}}"
        Maximum="{Binding ColorMap.Maximum}"
        Orientation="Vertical">
    </s:HeatmapColorMap>
    -->

    <Label 
        Grid.Row="0" 
        Grid.Column="2" 
        Content="{Binding ColorMaximum}" 
        Width="50" 
        HorizontalContentAlignment="Center"/>
    <Slider 
        Grid.Column="2" 
        Grid.Row="1" 
        Orientation="Vertical" 
        Minimum="0" 
        Maximum="10" 
        HorizontalAlignment="Center"
        Value="{Binding ColorMaximum}"/>
</Grid>

The idea in this small example is for slider to control both HeatmapColorPalette.Maximum and s:HeatmapColorMap.Maximum

The code in my View Model is pretty simple:

private double mColorMax;

public double ColorMaximum
    {
        get => mColorMax;

        set
        {
            mColorMax = value;
            OnPropertyChanged();
        }
    }

My View Model implements INotifyPropertyChanged

I will appreciate any suggestions.

Thank you in advance!

1 vote
13k views

I’ve created an application with MVVM in mind and managed to create a simple, working graph with SciChart that displays the data needed.
I’ve also seen some features (https://www.scichart.com/customer-case-study-blueshift-one-system/) which we’ll be planning on implementing, designing it to fit our own needs of course.

I’m wondering if there are some limitations (and perhaps improvements in later releases), that we could keep in mind while continuing to plan and develop our application with SciChart and MVVM?

0 votes
3k views

Hello,

I have created some ChartModifiers in a ModifierGroup in my ViewModel class (using Caliburn.Micro as MVVM framework, not code behind) and bound the group to my SciChartSurface in xaml. Now I want to apply some styles to my modfiers in xaml. Just creating styles with the specific target types don’t work so how do I do this?

  • Roland D asked 3 years ago
  • last active 3 years ago
1 vote
531 views

Hi, Support team.

I’m using MVVM pattern and trying to implement multi-chart which can insert Box Annotations at the same time into each chart .
So I’m testing in SciChart Example [“DigitalAnalyzerPerformanceDemo”] to know how to implement this.

But what i only got is just looping through and create annotation for each ChannelViewModels.

In the Demo, the VisibleRange ‘XRange’ is shared to all the ChannelViewModels by binding TwoWay-mode in ParentViewModel without looping for each ChildViewModels.
Like this, I wonder is there ways to apply BoxAnnotation all the ChannelViewModel at the same time by binding in ParentViewModel.

    <!-- BottomAxis -->
        <s:SciChartSurface Grid.Column="1">
            <s:SciChartSurface.XAxis>
                <s:NumericAxis Height="30"
                               AxisAlignment="Bottom"
                               VisibleRange="{Binding XRange, Mode=TwoWay}"                 
                               LabelProvider="{StaticResource TimeLabelProvider}"
                               MajorTickLineStyle="{StaticResource TimeAxisMajorTickLineStyle}"
                               MinorTickLineStyle="{StaticResource TimeAxisMinorTickLineStyle}"/>
            </s:SciChartSurface.XAxis>
            <s:SciChartSurface.YAxis>
                <s:NumericAxis Visibility="Collapsed"/>
            </s:SciChartSurface.YAxis>
        </s:SciChartSurface>
    </Grid>

    <!--  Create an X Axis with GrowBy  -->
     <s:SciChartSurface.XAxis>
           <s:NumericAxis Style="{StaticResource HiddenAxisStyle}"
                    VisibleRangeLimitMode="Min"
                    VisibleRangeLimit="0,0"
                    VisibleRange="{Binding DataContext.XRange, Mode=TwoWay, RelativeSource={RelativeSource AncestorType=ItemsControl, AncestorLevel=2}}"/>
     </s:SciChartSurface.XAxis>

I tried to bind annotation in ParentViewModel like XRange Binding method, But it doesn’t work.


This is View.xaml.

<Grid Grid.IsSharedSizeScope="True" IsEnabled="{Binding IsLoading, Converter={StaticResource InvertBooleanConverter}}">


    <!-- BottomAxis -->
        <s:SciChartSurface Grid.Column="1">
            <s:SciChartSurface.XAxis>
                <s:NumericAxis Height="30"
                               AxisAlignment="Bottom"
                               VisibleRange="{Binding XRange, Mode=TwoWay}"                 
                               LabelProvider="{StaticResource TimeLabelProvider}"
                               MajorTickLineStyle="{StaticResource TimeAxisMajorTickLineStyle}"
                               MinorTickLineStyle="{StaticResource TimeAxisMinorTickLineStyle}"/>
            </s:SciChartSurface.XAxis>
            <s:SciChartSurface.YAxis>
                <s:NumericAxis Visibility="Collapsed"/>
            </s:SciChartSurface.YAxis>
        </s:SciChartSurface>
    </Grid>

    <!-- Channels -->
        <ScrollViewer Background="#1C1C1E"
                      VerticalScrollBarVisibility="Auto"
                      HorizontalScrollBarVisibility="Disabled">

            <b:Interaction.Behaviors>
                <common:DigitalAnalyzerScrollBehavior ChannelHeightDelta="10" ChangeChannelHeightCommand="{Binding ChangeChannelHeightCommand}"/>
            </b:Interaction.Behaviors>

            <ItemsControl x:Name="chartItemsControl" ItemsSource="{Binding ChannelViewModels}">

                <b:Interaction.Behaviors>
                    <common:FocusedChannelScrollBehavior ScrollToFocusedChannel="False"/>
                </b:Interaction.Behaviors>

                <ItemsControl.ItemTemplate>
                    <DataTemplate DataType="{x:Type local:ChannelViewModel}">
                        <Grid Background="#2D2C32" Height="{Binding ChannelHeight, Mode=OneWay}" Focusable="False" UseLayoutRounding="False" >
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition SharedSizeGroup="ChannelNames" />
                                <ColumnDefinition />
                            </Grid.ColumnDefinitions>

                            <Border BorderThickness="0,0,0,1" BorderBrush="#1C1C1E">
                                <DockPanel>
                                    <Border DockPanel.Dock="Left"     
                                            Background="{Binding ChannelColor, Mode=OneWay}" 
                                            Width="5"/>

                                    <TextBlock DockPanel.Dock="Left"
                                               Margin="10,5"
                                               VerticalAlignment="Center"
                                               Foreground="White"
                                               Text="{Binding ChannelName}"/>
                                </DockPanel>
                            </Border>

                            <s:SciChartSurface x:Name="channelSurface" Grid.Column="1"
                                               RenderableSeries="{Binding RenderableSeries}"
                                               Annotations="{s:AnnotationsBinding  DataContext.Annotations, Mode=TwoWay, RelativeSource={RelativeSource AncestorType=ItemsControl, AncestorLevel=2} }">

                                <!--  Create an X Axis with GrowBy  -->
                                <s:SciChartSurface.XAxis>
                                    <s:NumericAxis Style="{StaticResource HiddenAxisStyle}"
                                                   VisibleRangeLimitMode="Min"
                                                   VisibleRangeLimit="0,0"
                                                   VisibleRange="{Binding DataContext.XRange, Mode=TwoWay, RelativeSource={RelativeSource AncestorType=ItemsControl, AncestorLevel=2}}"/>
                                </s:SciChartSurface.XAxis>

                                <!--  Create a Y Axis with GrowBy. Optional bands give a cool look and feel for minimal performance impact  -->
                                <s:SciChartSurface.YAxis>
                                    <s:NumericAxis Style="{StaticResource HiddenAxisStyle}"
                                                   VisibleRange="{Binding YRange, Mode=OneWay}"/>
                                </s:SciChartSurface.YAxis>

                                <s:SciChartSurface.ChartModifier>
                                    <s:ModifierGroup s:MouseManager.MouseEventGroup="ChannelModifierGroup">
                                        <s:RubberBandXyZoomModifier IsAnimated="False" IsXAxisOnly="True" ZoomExtentsY="False" ReceiveHandledEvents="True" IsEnabled="{Binding IsChecked, Mode=OneWay, ElementName=IsZoomEnabled}"/>
                                        <s:ZoomPanModifier ZoomExtentsY="False" XyDirection="XDirection" IsEnabled="{Binding IsChecked, Mode=OneWay, ElementName=IsPanEnabled}"/>
                                        <s:ZoomExtentsModifier XyDirection="XDirection" IsAnimated="False" />
                                        <s:MouseWheelZoomModifier XyDirection="XDirection" />
                                    </s:ModifierGroup>
                                </s:SciChartSurface.ChartModifier>
                            </s:SciChartSurface>

                            <Border Grid.Column="1"
                                    BorderThickness="0,0,0,1"
                                    BorderBrush="#2D2C32"
                                    VerticalAlignment="Bottom"/>
                        </Grid>
                    </DataTemplate>
                </ItemsControl.ItemTemplate>
            </ItemsControl>
        </ScrollViewer>
    </Border>


</Grid>

This is ViewModel.cs

public class DigitalAnalyzerExampleViewModel : BaseViewModel
{
    private bool _isLoading;
    private DoubleRange _xRange;

    public DigitalAnalyzerExampleViewModel()
    {
        ChannelViewModels = new ObservableCollection<ChannelViewModel>();
        Annotations = new ObservableCollection<IAnnotationViewModel>();
        Annotations.Add(new BoxAnnotationViewModel() { X1 = 0, X2 = 1000, Y1 = 0, Y2 = 1 }); //I want to implement sharing annotation like this.

        SelectedChannelType = "Digital";
        SelectedChannelCount = 32;
        SelectedPointCount = 1000000;
        SelectedResamplingPrecision =ResamplingPrecision.Default;
        SelectedStrokeThickness = 1;

        ChangeChannelHeightCommand = new ActionCommand<object>((d) =>
        {
            var delta = (double)d;
            foreach (var channelViewModel in ChannelViewModels)
            {
                channelViewModel.SetChannelHeightDelta(delta);
            }
        });

        AddChannelCommand = new ActionCommand(async () =>
        {
            IsLoading = true;

            var isDigital = SelectedChannelType == "Digital";
            await AddChannels(isDigital ? 1 : 0, isDigital ? 0 : 1);

            IsLoading = false;
        });

        LoadChannelsCommand = new ActionCommand(async () =>
        {
            IsLoading = true;

            // Clear ViewModels
            foreach (var channelVm in ChannelViewModels)
            {
                channelVm.Clear();
            }
            ChannelViewModels.Clear();
            XRange = null;

            // Create a bunch of Digital channels
            await AddChannels(SelectedChannelCount, 0);

            XRange = new DoubleRange(0, SelectedPointCount);
            IsLoading = false;
        });

        LoadChannelsCommand.Execute(null);
    }


    public ObservableCollection<ChannelViewModel> ChannelViewModels { get; private set; }
    public ObservableCollection<IAnnotationViewModel> Annotations { get; private set; }

    public string SelectedChannelType { get; set; }


    public ResamplingPrecision SelectedResamplingPrecision { get; set; }

    public int SelectedChannelCount { get; set; }

    public ActionCommand<object> ChangeChannelHeightCommand { get; }

    public ActionCommand AddChannelCommand { get; }

    public ActionCommand LoadChannelsCommand { get; }

    public long TotalPoints => ChannelViewModels.Sum(c => (long)c.DataCount);

    public bool IsLoading
    {
        get => _isLoading;
        set
        {
            _isLoading = value;
            OnPropertyChanged(nameof(IsLoading));
        }
    }

    public bool IsEmpty => ChannelViewModels.Count <= 0;

    public DoubleRange XRange
    {
        get => _xRange;
        set
        {
            _xRange = value;
            OnPropertyChanged(nameof(XRange));
        }
    }
}

+Attached image below is what i want to implement.
++I also attached tried code in .zip .

1 vote
9k views

Hi,

I am having a problem with two SciChartSurface’s sharing the same ViewModel instance. I am using the Master-Detail View pattern to provide a list of charts (Collection of SciChart surfaces) with continuously updating data from a device) within a Listbox container on the left-hand side. On the right-hand side I provide the current selected chart with extended size and some extra controls.

The visual appearance of the SciChartSurface (shared across both sides) is defined via data template

<Window.Resources>
    <local:WorkspaceViewModel x:Key="WorkspaceViewModel" />
    <DataTemplate x:Key="ChartDataTemplate">
        <Border MinHeight="200">
            <visuals:SciChartSurface DebugWhyDoesntSciChartRender="True"
                                     visuals:ThemeManager.Theme="BrightSpark"
                                     SeriesSource="{Binding ., Mode=TwoWay}">
                <visuals:SciChartSurface.XAxis>
                    <visuals:NumericAxis VisibleRange="0.0, 10.0"
                                         AutoRange="Always" />
                </visuals:SciChartSurface.XAxis>

                <visuals:SciChartSurface.YAxis>
                    <visuals:NumericAxis VisibleRange="-1.0, 1.0"
                                         AxisAlignment="Left"
                                         AutoRange="Always" />
                </visuals:SciChartSurface.YAxis>
                <visuals:SciChartSurface.ChartModifier>
                    <visuals:SeriesValueModifier ReceiveHandledEvents="True"></visuals:SeriesValueModifier>
                </visuals:SciChartSurface.ChartModifier>
            </visuals:SciChartSurface>
        </Border>
    </DataTemplate>
</Window.Resources>

and is used within the ListBox and ContentControl in the following way

<Grid DataContext="{StaticResource WorkspaceViewModel}">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="200*"
                          MinWidth="225"
                          MaxWidth="700" />
        <ColumnDefinition Width="Auto" />
        <ColumnDefinition Width="375*" />
    </Grid.ColumnDefinitions>

    <GroupBox Grid.Column="0">
        <ListBox x:Name="ListBox"
            SelectedItem="{Binding SelectedChart}"
                 HorizontalAlignment="Stretch"
                 VerticalAlignment="Stretch"
                 ItemsSource="{Binding Charts}"
                 HorizontalContentAlignment="Stretch"
                 ItemTemplate="{StaticResource ChartDataTemplate}" />
    </GroupBox>
    <GridSplitter Grid.Column="1"
                  Width="5"
                  HorizontalAlignment="Right"
                  VerticalAlignment="Stretch"
                  ResizeBehavior="PreviousAndNext" />
    <GroupBox Grid.Column="2">
        <ContentControl x:Name="ContentControl"
            Content="{Binding SelectedChart}"
                        ContentTemplate="{StaticResource ChartDataTemplate}" />
    </GroupBox>
</Grid>

The ViewModel (WorkspaceViewModel) contains two properties:

ObservableCollection<ObservableCollection<IChartSeriesViewModel>> Charts
public ObservableCollection<IChartSeriesViewModel> SelectedChart

So far, so good. Once populated with live chart data, the ListBox displays all charts with live updating of the DataSeries. The issue I encounter is that once a chart in the ListBox is selected, the Detail View gets updated and continues displaying live data updates, but the ListBox entry stops updating. Obviously the sharing of the same instance of IChartSeriesViewModel in two different SciChartSurface views (via the ViewModel property SelectedChart) is causing trouble.

What am I missing here? I am currently using SciChart 3.0.

Many thanks,

Silvio

  • swiedric asked 8 years ago
  • last active 8 years ago
1 vote
6k views

Hi there,

We are looking for a high-performance charting library, hence Im testing scichart and I am very excited about it.

Our application has an very abstract processing mechanism which categorize incoming data and dynamically adds channels to the plot. Each sample is – like we call it – a ProcessedData object which is a base class containing extented information about the sample like “is valid” or “is out of range”. Eg. if measureing a voltage, we need to mark data points on the chart that are “out of range” or similar.
I’d thought to start with the “DragHorizontalThreshold” which uses the RedIfOverThresholdPaletteProvider to change the color of the plot.
Do you have an idea if it is possible to implement a custom PaletteProvider which takes respect of an IsValid-property? Acutally i do not have a clue how to.

Thanks.

  • Sven Fink asked 7 years ago
  • last active 7 years ago
0 votes
4k views

Hello!

I am getting started with SciChart and attempting to use it for a project I’m working on.

I am attempting to make a 3D scatter plot whose data is populated through a ViewModel.

Below is a my xaml:

 <UserControl x:Class="CustomWindow.Pages.Results_Page.Common_Tests.Positional6DOFErrorTest"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:enum="clr-namespace:MultiMet.Interfaces.Common;assembly=MultiMet.Interfaces"
             xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid"
             xmlns:s3D="http://schemas.abtsoftware.co.uk/scichart3D"
             mc:Ignorable="d" 
             d:DesignHeight="360" d:DesignWidth="712">

    <Grid Background="White">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>

        <!-- Some other stuff I'm doing on the page -->

        <s3D:SciChart3DSurface Grid.Column="1" ShowLicensingWarnings="True"
                        IsFpsCounterVisible="False"
                         IsAxisCubeVisible="True"
                         IsXyzGizmoVisible="False"
                         CoordinateSystem="RightHanded"
                               Background="White" RenderableSeries="{s3D:SeriesBinding RenderableSeries3DViewModels}">
            <!-- Create XAxis -->
            <s3D:SciChart3DSurface.XAxis>
                <s3D:NumericAxis3D TickTextBrush="Black" AxisTitle="X (mm)" DrawMajorBands="True" DrawMajorGridLines="True"
                        DrawMinorGridLines="True"
                        DrawMajorTicks="True"
                        DrawMinorTicks="True"
                        AxisBandsFill="Transparent"
                        FontSize="10"
                        TickLabelAlignment="Camera"
                                   GrowBy="0.1, 0.1"/>
            </s3D:SciChart3DSurface.XAxis>
            <!-- Create YAxis -->
            <s3D:SciChart3DSurface.YAxis>
                <s3D:NumericAxis3D AxisTitle="Z (mm)"
                        AxisBandsFill="Transparent"
                        TickTextBrush="Black"
                        FontSize="10"
                        TickLabelAlignment="Camera"
                                   GrowBy="0.1, 0.1"/>
            </s3D:SciChart3DSurface.YAxis>
            <!-- Create ZAxis -->
            <s3D:SciChart3DSurface.ZAxis>
                <s3D:NumericAxis3D AxisTitle="Y (mm)"
                        AxisBandsFill="Transparent"
                        TickTextBrush="Black"
                        FontSize="10"
                        TickLabelAlignment="Camera"
                                   GrowBy="0.1, 0.1"/>
            </s3D:SciChart3DSurface.ZAxis>

            <!-- Create Interactivity Modifiers for rotating camera -->
            <s3D:SciChart3DSurface.ChartModifier>
                <s3D:ModifierGroup3D>
                    <s3D:OrbitModifier3D ExecuteOn="MouseLeftButton" ExecuteWhen="None"/>
                    <s3D:MouseWheelZoomModifier3D MouseWheelSensitivity="90" />
                    <s3D:FreeLookModifier3D ExecuteOn="MouseRightButton"/>
                    <s3D:TooltipModifier3D IsEnabled="True" SourceMode="AllSeries" ShowTooltipOn="MouseOver"/>
                </s3D:ModifierGroup3D>
            </s3D:SciChart3DSurface.ChartModifier>
        </s3D:SciChart3DSurface>
    </Grid>
</UserControl>

And below I declare and define my scatter plot in the viewmodel (the scatterSeries is an XyzDataSeries3D set somewhere else) :

    PositionalErrorTestModel.RenderSeries3DViewModels = new ObservableCollection<IRenderableSeries3DViewModel>();
PositionalErrorTestModel.RenderSeries3DViewModels.Add(new ScatterRenderableSeries3DViewModel
            {
                PointMarker = new SpherePointMarker3D { Fill = System.Windows.Media.Color.FromRgb(0x78, 0xC3, 0), Size = 5, Opacity = 1 },
                DataSeries = scatterSeries
            });

The chart appears, but the data does not. Is there something I’m missing? Do I need to explicitly call an update to the chart? Because the page the chart is on and the chart does get loaded before the data is populated.

Please let me know if you need to know anymore information.

Thanks for any help you can provide!

0 votes
5k views

I am trying to bind from my ViewModel to the DataSeries of a ScatterRenderableSeries3D, but no data is showing.

I am binding in this way:

My ViewModel has a property of type ObservableCollection<XyzDataSeries3D<DateTime, double, int>>. I can populate ChartItems, and see the data in it. The property is being notified of change as expected.

If I populate the DataSeries directly from code behind, it works, but not when being bound.

What am I doing wrong?

1 vote
470 views

Hello,
I’ve got Annotations ViewModels collection (BoxAnnotationViewModel, VerticalLineAnnotationViewModel, LineAnnotationViewModel) bound by AnnotationsBinding. Every Annotation ViewModel has properties set to:

CoordinateMode = AnnotationCoordinateMode.Absolute
IsEditable = true
DragDirections = XyDirection.XYDirection
ResizeDirections = XyDirection.XYDirection

My goal is to move and resize every annotation on SciChart surface only by integer value. Is there any way to achieve this?

Best regards,
Anna

0 votes
8k views

Hi,

I’m trialing SciChart and want to chart an XY Series where the X values are DateTime. I want to be able to switch between plotting the data as a single series on a DateTimeAxis and plotting multiple series per Date on a NumericAxis by splitting the original series into 1 series per day with the X value being the time of day in hours (Integer). Is there an easy way to switch between a DateTime and Numeric axis from my View Model – I’ve tried creating two axis with seperate Id’s and changing the visibility but it didn’t work

Regards
Dave

1 vote
5k views

I need the length of the plot area in pixels. I don’t have access to SciChartSurface and it’s XAxis field. I have only ObservableCollection and my NumericAxisViewModel. Is it possible to get the length from them? Or what is the best way to get it in my case?

1 vote
8k views

Hi all,

As the title indicates, I am trying to get mouse cursor position (Coordinates) from a SciChartSurface in MVVM manner.

I have lots of data bindings to my chart properties in my View Model in the background. This following snipped is a copy of my XAML code in which I have all the data bindings set:

<sci:SciChartSurface Grid.Row="0" Grid.Column="0"
                         RenderableSeries="{Binding SciChartSeriesViewModels}"     
                         Padding="0,8,0,2"                                         
                         sci:ThemeManager.Theme="BrightSpark"                                       
                         YAxes="{Binding SciChartYAxesCollection,Mode=TwoWay}"                                         
                         AutoRangeOnStartup="True"                                       
                         Annotations="{Binding ChartAnnotations}"                                     
                         Name="ApplicationSciChart"                                       
                         ChartModifier ="{Binding ChartModifierGroup}"
                         BorderBrush="LightSlateGray"
                         BorderThickness="1"
                         Visibility="{Binding ChartVisibility}">

        <sci:SciChartSurface.XAxis>
            <sci:TimeSpanAxis AxisTitle="Time"
                              AutoRange="Once" GrowBy="0.03,0.001"
                              TextFormatting=""/>
        </sci:SciChartSurface.XAxis>

  </sci:SciChartSurface>

As can be seen from the code above, the ChartModifier property is one of the items that has Data binding to an instance of a ModiferGroup I have created in my View-Model in the background. The following code is a method that adds members to that ModiferGroup (called ChartModiferGroup in my View-Model):

 private void CreateChartModifiers()
    {
        var rubberBandXyZoomModifier = new RubberBandXyZoomModifier
        {
            ExecuteOn = SciChart.Charting.ChartModifiers.ExecuteOn.MouseLeftButton,
            RubberBandFill = (SolidColorBrush)(new BrushConverter().ConvertFrom("#33FFFFFF")),
            RubberBandStroke = Brushes.SteelBlue, 
            RubberBandStrokeDashArray = new DoubleCollection {2.0, 2.0}
        };

        var zoomPanModifier = new ZoomPanModifier
        {
            ExecuteOn = SciChart.Charting.ChartModifiers.ExecuteOn.MouseMiddleButton,
            ClipModeX = SciChart.Charting.ClipMode.None
        };

        var yAxisDragModifier = new YAxisDragModifier
        {
            DragMode = SciChart.Charting.AxisDragModes.Scale
        };

        var xAxisDragModifier = new XAxisDragModifier
        {
            DragMode = SciChart.Charting.AxisDragModes.Pan
        };

        var mouseWheelZoomModifier = new MouseWheelZoomModifier();

        var zoomExtentsModifier = new ZoomExtentsModifier
        {
            ExecuteOn = SciChart.Charting.ChartModifiers.ExecuteOn.MouseDoubleClick
        };

        var cursorModifier = new CursorModifier
        {
            ReceiveHandledEvents = true,
            ShowAxisLabels = false
        };


        var probeline = new VerticalLineAnnotation()
        {
            Stroke = Brushes.LightSlateGray,
            IsEditable = true,
            ShowLabel = true,
            LabelPlacement = LabelPlacement.Axis,
            Visibility = Visibility.Visible,
            IsHidden = false,
            IsEnabled = true,
            X1 = TimeSpan.FromMilliseconds(-100),
            YAxisId = "Triggered",
            StrokeDashArray = new DoubleCollection { 2.0,2.0},
            StrokeThickness = 1
        };

        var verticalSliceModifier = new VerticalSliceModifier
        {
            IsEnabled = true,
            ShowAxisLabels = true,
            Style = probeline.Style
        };
        verticalSliceModifier.VerticalLines.Add(probeline);


        ChartModifierGroup.ChildModifiers.Add(rubberBandXyZoomModifier);
        ChartModifierGroup.ChildModifiers.Add(rubberBandXyZoomModifier);
        ChartModifierGroup.ChildModifiers.Add(zoomPanModifier);
        ChartModifierGroup.ChildModifiers.Add(yAxisDragModifier);
        ChartModifierGroup.ChildModifiers.Add(xAxisDragModifier);
        ChartModifierGroup.ChildModifiers.Add(mouseWheelZoomModifier);
        ChartModifierGroup.ChildModifiers.Add(zoomExtentsModifier);
        ChartModifierGroup.ChildModifiers.Add(verticalSliceModifier);
        ChartModifierGroup.ChildModifiers.Add(cursorModifier);
    }

What I am trying to do next, is to add functionality in my application, such that I can add more VerticalSliceModifiers to my ChartModifierGroup when a button is pressed. In order to do that, I will require having access to the Mouse cursor position of my SciChartSurface to set the X1 property of the VerticalLineAnnotation, that would be used for the VerticalSliceModifiers (to be created).

In simple words, every time I press a button, I need the position of the mouse pointer to get captured and used as the location of the new VerticalSliceModifer that I am going to create.

I have already read many of the examples and documentation of Sci-Chart such as: Vertical Slice Tooltips Example. However, in this example, the mouse pointer location is accessed is under the xaml.cs and not inside an actual View-Model.

I was wondering if anybody could let me know how I can get access to my SciChartSurface mouse pointer position using true MVVM model.

1 vote
13k views

We keep getting asked What’s the best practice way to suspend the SciChartSurface in a multi-pane stock chart demo.

We have multiple ways of doing this.

By far the most effective and thread-safe way to do this is to call SuspendUpdates directly on the SciChartSurface. But how to do this in a ViewModel?

0 votes
6k views

Using MVVM, I have an AnnotationCollection databound to the SciChartSurface.Annotations. Individual LineAnnotations are added to the collection as the application code runs.

If annotations are added while the chart is displayed, they are all drawn correctly.

However, if the chart page is reloaded (say, the user navigates to a different page and then returns to the chart page), the annotations do not always redraw. If the annotations have AnnotationCanvas set to default (AnnotationCanvas.AboveChart, I believe) they redraw correctly about 50% of the time. If the annotations’ AnnotationCanvas is set to AnnotationCanvas.XAxis, they never redraw.

All the annotations still exist in the ObservableCollection in all these cases, so they shouldn’t need to be re-created.

Is this a bug in SciChart or is there something I may be doing wrong with the annotations?
(There is only one X-Axis so no axisID is necessary.)

LineAnnotation lAnno = new LineAnnotation();
lAnno.CoordinateMode = AnnotationCoordinateMode.RelativeY;
lAnno.Y1 = 0.0;
lAnno.X1 = DataPoints;
lAnno.Y2 = 1.0;
lAnno.X2 = DataPoints;
lAnno.YAxisId = "Counts";
lAnno.Foreground = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromRgb(255, 255, 255));
lAnno.Stroke = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromArgb(96, 255, 0, 0));
lAnno.StrokeThickness = 2;
lAnno.AnnotationCanvas = AnnotationCanvas.XAxis;

Markers.Add(lAnno);
0 votes
5k views

Hi,

Could you provide some Mvvm examples that include:

1) Mvvm bubble chart where the Fill color is defined on the series view model
2) custom tooltips per point where the tooltip string is defined on the point view model

I have both of these kind of working using a workaround based on the obsolete SciChartSurface.SeriesSource property, but now I’m trying to migrate to SciChartSurface.RenderableSeries and the proper Mvvm API and I cannot find all the elements I need.

Cheers
Felix

  • F W asked 7 years ago
  • last active 7 years ago
0 votes
2k views

We’re using ReactiveUI and bindings in code-behind. We’re now upgrading from SciChart v3 to v6 and we’re wondering how to use the SeriesBinding in code-behind like this:

public partial class BarChartView : ReactiveUserControl<sBarChartViewModel>
{
    public BarChartView()
    {
        InitializeComponent();

        this.WhenActivated(disposable =>
        {
            this.OneWayBind(ViewModel,
                            vm => vm.SeriesSource,
                            view => view.BarChart.SeriesSource)
                .DisposeWith(disposable);

            this.OneWayBind(ViewModel,
                            vm => vm.LabelProvider,
                            view => view.FaciesAxis.LabelProvider)
                .DisposeWith(disposable);

            this.OneWayBind(ViewModel,
                            vm => vm.TooltipDataContext,
                            view => view.TooltipModifier.TooltipLabelDataContextSelector)
                .DisposeWith(disposable);

            this.OneWayBind(ViewModel,
                            vm => vm.XAxisRange,
                            view => view.FaciesAxis.VisibleRange)
                .DisposeWith(disposable);
        });
    }
}

Now the IChartSeriesViewModel and SciChartSurface.SeriesSource is deprecated so we have to move to IRenderableSeriesViewModel instead and then bind to SciChartSurface.RenderableSeries. But how can we convert from IRenderableSeriesViewModel to IRenderableSeries here?

  • Tore Munch asked 2 years ago
  • last active 12 months ago
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