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0 votes
0 answers
24 views

Hi,
On the x-axis (the same happens for the y-axis) I got the tick label -0 (instead of 0) displayed.
This happens when the first visible value of the x-axis is 0, otherwise the axis correctly displays the value 0.

Also when I position myself with the cursor over the 0 axis I get the value -0.
I’m using the NumericAxisViewModel with properties CursorTextFormatting = “0.###” and
TextFormatting = “0.########”.

Thanks in advance.

1 vote
113 views

We’re using ColumnRenderableSeriesViewModel and FastColumnRenderableSeries to display a bar chart.

How would we go about allowing the user to select one or more columns? such that :

  • The column under the cursor changes colour when hovered over
  • The current selected columns are rendered using a different colour

I’ve seen that rendereable series has a selection, but seems to apply to ALL columns.

Thank you

  • Ben Green asked 6 days ago
  • last active 6 days ago
0 votes
0 answers
111 views

Hi,
I am currently facing an issue related to our implementation.
We want the graph to zoom in whenever the user drags the y-axis upward, and conversely, zoom out when the user drags the y-axis downward. Importantly, this behavior should remain consistent regardless of whether the user drags the graph from the positive or negative side.

1 vote
0 answers
110 views

I have a XyDataSeries<double, double> with unsorted X-Values and AcceptsUnsortedData set to true.
I tried offsetting the Y-Values using the Offset<TX, TY> extension method but got System.InvalidOperationException: ‘Data has been Appended to a DataSeries which is unsorted in the X-Direction.

The Filter extension method seems to ignore the AcceptsUnsortedData property set in the original DataSeries. I’m not sure if this is a bug or by design.

Currently, I’m using DataSeries.Update() to offset the y values, and I’m wondering if the Offset method is faster.

I couldn’t attach a zip file for the repro, here’s a code snippet I used to reproduce

var lineData = new XyDataSeries<double, double>()
{
    AcceptsUnsortedData = true
};

for (int i = 0; i < 1000; i++)
{
    lineData.Append(i, Math.Sin(i * 0.1));
}
for (int i = 1100; i >= 1000; i--)
{
    lineData.Append(i, Math.Sin(i * 0.1));
}

LineSeries.DataSeries = lineData;

var offsetLineData = lineData.Offset(5);
1 vote
275 views

Hello,
I’m attempting to build one of the WPF examples on a machine that has no internet access. I get the error mentioned in the title. When I exported the project, I selected the “Installation Folder” option rather than the “NuGet Package”.

How can I fix this error?

Thanks, Brett S.

1 vote
246 views

Hi,

I would like to use the UniformXyDataSeries because I have different Y values that are equidistant in time. I then assumed that I could use UniformXyDataSeries when X values are equidistant. I created an object of type UniformXyDataSeries but this class expects the XStart and XStep to be double values. I would like to provide TimeSpan values instead of double values. Is there any class that lets us have this setup (uniform data series with Y being double values and X equidistant TimeSpan values)?

Now, if I create a UniformXyDataSeries and provide XStep to be 0.0001 (double value) seconds and set the X axis being a TimeSpanAxis, the chart will not be rendered because it is saying it cannot convert the double value of XStep into a TimeSpan.

Thank you!
Alex

1 vote
238 views

Hi,

I feel this should be obvious but I cannot find the answer in the docs. I have multiple Y axis and I want all of them to start at 0 and autoRange only the max value. Also, the zooming should not be affected, it should have normal behavior. I just want the axis to go from 0 to auto max value when we call ZoomExtents(). The default behavior of the ZoomExtents() is auto min value to auto max value.

Is there any way we can achieve this with SciChart?

Thank you,
Alex

0 votes
332 views

I have a 3D surface chart.

I programmatically add some custom entities derived from BaseSceneEntity, invoked by a user action on some other part of my UI.

When I add the items, to get the screen to refresh I use this loop after adding a number of entities:

        foreach(var item in _zone_items)
        {
            item.InvalidateScene();
        }

_zone_items is a List holding the custom entities which have been added to the chart using

MainSurfaceChart.Viewport3D.RootEntity.Children.Add(cube);

This works fine, and even if I have removed some items from the _zone_items list, the screen still refreshes correctly and shows only the current items in _zone_items (and in RootEntity.Children)

The problem I have is when I remove all items from _zone_items. When I do this I use this loop:

        foreach (var item in _zone_items)
        {
            MainSurfaceChart.Viewport3D.RootEntity.Children.Remove(item);
        }
        _zone_items.Clear();

(I use Remove(item) rather than Clear as in future I may have other entities which are not in _zone_items).
but now I have no way to refresh the screen as I have no entities to call InvalidateScene(). If I touch the mouse on the chart surface and move just slightly it re-renders and the entities are not re-drawn – so they have been removed.

How can I get the chart to refresh/re-render so as to remove the entities which are no longer in the RootEntity.Children? I would have hoped removing them from Children would remove them from the screen?

Thanks
Andrew M

1 vote
328 views

Is there a way to control how/when the open/close tick mark is displayed on OHLC charts with respect to the zoom level? When a chart with a lot of data is way zoomed out you of course can’t see the open/close, but as you zoom in, the horizontal open/close ticks become visible. SciChart WPF v8 is a bit more aggressive removing the open/close than I would prefer. The attached images show just one minor difference in zoom level. The one where the open/close has disappeared entirely doesn’t look “right” to my eyes. I’m using a OhlcRenderableSeriesViewModel for MVVM. Any hints or suggestions appreciated!

1 vote
0 answers
325 views

Hi

I recently updated my SciChart license previously was using 6.3.0 but now using 8.3.0. Without changing any code other than the SetRuntimeLicenseKey I noticed a bunch of binding errors.

Warning 4 null Foreground TextBlock.Foreground Brush Cannot find source: RelativeSource FindAncestor, AncestorType=’SciChart.Charting.Visuals.RenderableSeries.LegendPlaceholder’, AncestorLevel=’1′.

Code below:

<SciChart:SciChartLegend
HorizontalAlignment="Left"
VerticalAlignment="Top"
LegendData="{Binding LegendData, ElementName=mainLegend}"
ShowVisibilityCheckboxes="True">
<SciChart:SciChartLegend.ItemsPanel>
    <ItemsPanelTemplate>
        <WrapPanel ItemWidth="150" Orientation="Horizontal" />
    </ItemsPanelTemplate>
</SciChart:SciChartLegend.ItemsPanel>

Searching for same problem I noticed someone else had exactly the same issue with an earlier version. This was addressed at the time with an update. Wondered if the issue had creeped back in?

1 vote
411 views

Hi everyone,

I have a chart with a ZoomPanModifier that allows to pan over the X axis only, what I’d like to accomplish is to append more data when the user reaches the max value of the axis while panning.

Is there an event to bind to a command or some other way to do something like this in MVVM?
I’d like to avoid using visible range events and only have this behaviour while panning if possible.

Thanks a lot,

Marco

1 vote
0 answers
384 views

Hi
I used trial license. and I would like to know if it is possible to implement it as shown in the attached Image.

I want to put multiple items into one series.
And I would like to display the units in milliseconds or Numberics.

0 votes
0 answers
385 views

With these settings

            <s3D:SciChart3DSurface.RenderableSeries>
            <s3D:SurfaceMeshRenderableSeries3D x:Name="surfaceMeshRenderableSeries" 
                                               DrawMeshAs="Wireframe" 
                                               ContourStrokeThickness="2" 
                                               ContourInterval="10" 
                                               ContourOffset="0" 
                                               Stroke="black"  Maximum="150" StrokeThickness="1.0" DrawSkirt="True" 
                                               Opacity="0.9" 
                                               MeshColorPalette="{StaticResource HeightColorMap}"/>
        </s3D:SciChart3DSurface.RenderableSeries>

No mesh is visible

Change Stoke to #FF000001 and the mesh appears.
Or
Change DrawMeshAs to SolidWireFrame and the mesh appears

Just with DrawMeshAs=Wireframe and Stroke=black or Stroke=#FF000000 no mesh is drawn.

This is a problem as we allow the user to select the colour for the Stroke through a color picker UI and they can (and likely will) select black!

(Can workaround by changing black to #FF000001 – but would be nice if didn’t have to)

0 votes
0 answers
397 views

Style is set thus:

        <Grid.Resources>
        <Style x:Key="MajorGridLineStyle" TargetType="Line">
            <Setter Property="Stroke" Value="Red"/>
            <Setter Property="StrokeDashArray" Value="1,5"></Setter>
        </Style>
    </Grid.Resources>

and

      <s3D:SciChart3DSurface.YAxis>
            <s3D:NumericAxis3D DrawMajorGridLines="True" DrawMinorGridLines="False"  MajorGridLineStyle="{StaticResource MajorGridLineStyle}"  />
  </s3D:SciChart3DSurface.YAxis>

but grid lines shown in solid red, no dots nor dash.
The Stroke and StrokeThickness properties work but not StrokeDashArray

but documentation here:

https://www.scichart.com/documentation/win/current/webframe.html#Styling%20Axis%203D%20Gridlines%20and%20Labels.html

says

To style a MajorGridline or MinorGridLine create a Style with TargetType=Line and set properties such as Stroke, StrokeThickness, StrokeDashArray etc…

1 vote
532 views

The SciChart.Core.ExportType.Xps value was deprecated in a recent SciChart release. Are there plans to change this to another vector format? Or will this feature no longer be available?

Thanks!

  • Matt Robey asked 1 month ago
  • last active 1 month ago
1 vote
0 answers
531 views

Hello,
I have this

private readonly string CHART_MARKER_TEXT = "Marker";
private readonly string CHART_MARKER_STYLE = "VerticalLineAnnotationStyle"; // defined in Chart.xaml

    AddVerticalLineAnnotation(new AnnotationRequest() { XValue = 3, LabelText = CHART_MARKER_TEXT, AnnotationStyle = CHART_MARKER_STYLE });

private void AddVerticalLineAnnotation(AnnotationRequest request)
{
    Annotations.Add(new VerticalLineAnnotationViewModel
    {
        X1 = request.XValue,
        LabelValue = !string.IsNullOrEmpty(request.LabelText) ? request.LabelText : null,
        VerticalAlignment = VerticalAlignment.Stretch,
        LabelPlacement = LabelPlacement.Left,
        LabelsOrientation = System.Windows.Controls.Orientation.Vertical,
        StyleKey = request.AnnotationStyle,
    });
}

And this

<Style x:Key="VerticalLineAnnotationStyle" TargetType="{x:Type s:VerticalLineAnnotation}">
    <Setter Property="Stroke" Value="Orange" />
    <Setter Property="StrokeThickness" Value="2" />
    <Setter Property="FontSize" Value="12" />
    <Setter Property="FontWeight" Value="Bold" />
</Style>

Why I can’t see Label?

enter image description here
enter image description here

1 vote
502 views

I want to implement something like, if a certain analysis value/custom logic is true for one of the values in the loop, –> set this bar color to ‘orange’ as an example, how can i do this?

   // Create a dataset of type x=DateTime, y=Double
  var dataSeries = new OhlcDataSeries<DateTime, double>();

   // Prices are in the format Time, Open, High, Low, Close (all IList)
  var prices = smallerList;

    // Append data to series. SciChart automatically redraws
    for (var i = 0; i < prices.Count(); i++)
   {

 // Convert TIME to a 4-digit string (e.g., 5 becomes "0005", 15 becomes "0015")
 string timeString = prices[i].Value.TIME.ToString("D4");

 // Parse the TIME field
 int hour = int.Parse(timeString.Substring(0, 2));
 int minute = int.Parse(timeString.Substring(2, 2));

 // Create the DateTime object
 DateTime dateTime = new DateTime(prices[i].Value.YEAR, prices[i].Value.MONTH, prices[i].Value.DAY,      hour, minute, 0);
 Dispatcher.Invoke(() =>
 {
     //here we append values in 'dataSeries', how do i do something like, 'bool condition = 
// returnCustomLogic('dataValues') --> outputs true, if true --> set this bar color to orange

     // Update the UI element on the UI thread
     dataSeries.Append(
    dateTime,
    (double)prices[i].Value.OPEN,
    (double)prices[i].Value.HIGH,
    (double)prices[i].Value.LOW,
    (double)prices[i].Value.CLOSE);

   });


   }
     Dispatcher.Invoke(() =>
     {
 StockChart.RenderableSeries[0].DataSeries = dataSeries;

 // Zoom Extents - necessary as we have AutoRange=False
 StockChart.ZoomExtents();
   });
1 vote
628 views

Hello.
I’d checked examples from your Demo ‘SciChart.Examples.Demo’ and looks like the example “SciChart.Examples.Examples.CreateRealtimeChart.UsingSeriesValueModifier” is applicable for me because I need functionality like this.

But as I understand Legend as LegendModifier component is a part of chart and it ‘know’ about chart data and can manipulate layout of it. In my application I want to have chart settings not in chart layout but in separate part of application. Can I bind chart settings with my custom controls? At start I want to set visibility for chart series which created in code

        private XyDataSeries<double, double> _lineDataDiameter1;
        private XyDataSeries<double, double> _lineDataDiameter2;
        private XyDataSeries<double, double> _lineDataCovering1;
        private XyDataSeries<double, double> _lineDataCovering2;
        private XyDataSeries<double, double> _lineDataCovering3;

private void InitCharts()
    { // TODO names and color maybe make as settings
        _lineDataDiameter1 = InitChart(new InitChartRequest() { ChartName = CHART_NAME_DIAMETER_1, LineColor = Colors.OrangeRed, ChartStyle = CHART_LINE_STYLE, LineThickness = CHART_LINE_THICKNESS });
        _lineDataDiameter2 = InitChart(new InitChartRequest() { ChartName = CHART_NAME_DIAMETER_2, LineColor = Colors.BlueViolet, ChartStyle = CHART_LINE_STYLE, LineThickness = CHART_LINE_THICKNESS });
        _lineDataCovering1 = InitChart(new InitChartRequest() { ChartName = CHART_NAME_COVERING_1, LineColor = Colors.LimeGreen, ChartStyle = CHART_LINE_STYLE, LineThickness = CHART_LINE_THICKNESS });
        _lineDataCovering2 = InitChart(new InitChartRequest() { ChartName = CHART_NAME_COVERING_2, LineColor = Colors.DeepSkyBlue, ChartStyle = CHART_LINE_STYLE, LineThickness = CHART_LINE_THICKNESS });
        _lineDataCovering3 = InitChart(new InitChartRequest() { ChartName = CHART_NAME_COVERING_3, LineColor = Colors.White, ChartStyle = CHART_LINE_STYLE, LineThickness = CHART_LINE_THICKNESS });
    }

    private XyDataSeries<double, double> InitChart(InitChartRequest request)
    {
        XyDataSeries<double, double> lineData = new()
        {
            SeriesName = request.ChartName,
        };

        RenderableSeries.Add(new LineRenderableSeriesViewModel()
        {
            StrokeThickness = request.LineThickness,
            Stroke = request.LineColor,
            DataSeries = lineData,
            StyleKey = request.ChartStyle,
        });

        return lineData;
    }

And additional little question. How can I make CursorModifier visible or not?

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

Even if I make it like this

                <s:SciChartSurface.ChartModifier>
                    <s:ModifierGroup>
                        <s:SeriesValueModifier/>
                        <s:CursorModifier Visibility="Hidden"/>
                    </s:ModifierGroup>
                </s:SciChartSurface.ChartModifier>

I see it

1 vote
561 views

Hi, I have a problem with the Y-axis mouse scroll sensitivity regarding values, if you take a look here, you can see that it will take a lot of separate scrolls to reach the desired Y-axis value
due to a low level of sensitivity
how can I solve this problem

P

my code

“`

        <s:SciChartSurface x:Name="scs" 
                           RenderableSeries="{s:SeriesBinding Series}" 
                           ViewportManager="{Binding ViewportManager}"
                           BorderThickness="2,2,2,0"
                           s:VisualXcceleratorEngine.EnableImpossibleMode="True"
                           LeftAxesPanelTemplate="{StaticResource YAxesPanel}"
                           Grid.Row="0"   
                           MouseDoubleClick="OnChartMouseDown">


            <s:SciChartSurface.XAxes>
                <!-- Hidden Axis that tracks the data -->
                <s:NumericAxis AutoRange="Always"
                               DrawMinorGridLines="False"
                               DrawMinorTicks="False"
                               DrawMajorGridLines="False"
                               DrawMajorTicks="False"
                               Visibility="Collapsed"
                                />
                <!--Hidden Axis that track the annotations' locations (All the added annotations have the same XAxis Id-->
                <s:NumericAxis Name="SharedXAxisCommon"  
                                AutoRange="Never"
                                VisibleRangeLimit="0,10"
                                Height="1"
                                Visibility="Hidden"  
                                Id="CommonID_X"/>
            </s:SciChartSurface.XAxes>

            <s:SciChartSurface.YAxes >
                <s:NumericAxis AutoRange="Never"
                               AutoTicks="True"
                               DrawMinorGridLines="False"
                               DrawMinorTicks="False"
                               DrawMajorGridLines="False"
                               DrawMajorTicks="True"
                               VisibleRange="0,8128000"
                               Visibility="Collapsed"/>
            </s:SciChartSurface.YAxes>
            <s:SciChartSurface.ChartModifier>
                <s1:ModifierGroup>
                    <s1:YAxisDragModifier/>
                    <s:SeriesSelectionModifier >
                        <s:SeriesSelectionModifier.SelectedSeriesStyle>
                            <Style TargetType="s:BaseRenderableSeries">
                            </Style>
                        </s:SeriesSelectionModifier.SelectedSeriesStyle>
                    </s:SeriesSelectionModifier>
                </s1:ModifierGroup>
            </s:SciChartSurface.ChartModifier>

        </s:SciChartSurface>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="0.3*"/>
                <RowDefinition Height="2*"/>
            </Grid.RowDefinitions>
            <TextBlock Grid.Row="1" x:Name="InportValueTextBlock" Text="{Binding InportValue}" Margin="20,0,0,0" FontSize="14"/>
        </Grid>
    </Grid>

“`

1 vote
579 views

Hi, I have problem with the Y axis values, if you take a look here,

image of scichart surface

the numbers are not intuitive is there a way to fix it?

enter image description here

I tried to set the AutoTicks=”True” but it did nothing

the code

“`

<UserControl.Resources>
    <BooleanToVisibilityConverter x:Key="b2vc"/>
    <local:BoolToAxisAutoRangeConverter x:Key="AutoRangeConverter" />
    <local:StarsConverter x:Key="conv"/>
    <ItemsPanelTemplate x:Key="YAxesPanel" >
        <Grid local:GridHelpers.RowCount="{Binding RowsCount}"
              local:GridHelpers.StarRows="{Binding RowsCount, Converter={StaticResource conv}, Mode=OneWay}"
              local:GridHelpers.ColumnCount="1"

              >
        </Grid>
    </ItemsPanelTemplate>
    <Style x:Key="MinorTickLineStyle" TargetType="Line">
        <Setter Property="Stroke" Value="White"/>
    </Style>

</UserControl.Resources>



<Grid x:Name="MainGrid">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"/>
    </Grid.ColumnDefinitions>

    <!-- Toolbar -->
    <Border Style="{DynamicResource OriginalBorderBright}" BorderThickness="0" Canvas.ZIndex="9999" Visibility="Collapsed">
        <StackPanel Orientation="Vertical">
            <RadioButton x:Name="RunBtn" Command="{Binding RunCommand}" IsChecked="True" Visibility="Hidden"/>
            <RadioButton x:Name="PauseBtn" Visibility="Hidden"/>
        </StackPanel>
    </Border>

    <!-- Chart Surface -->
    <Grid Grid.Column="1" >

        <s:SciChartSurface x:Name="scs" 
                           RenderableSeries="{s:SeriesBinding Series}" 
                           ViewportManager="{Binding ViewportManager}"
                           BorderThickness="2,2,2,0"
                           s:VisualXcceleratorEngine.EnableImpossibleMode="True"
                           LeftAxesPanelTemplate="{StaticResource YAxesPanel}"
                           Grid.Row="0"   
                           MouseDoubleClick="OnChartMouseDown">


            <s:SciChartSurface.XAxes>
                <!-- Hidden Axis that tracks the data -->
                <s:NumericAxis AutoRange="Always"
                               DrawMinorGridLines="False"
                               DrawMinorTicks="False"
                               DrawMajorGridLines="False"
                               DrawMajorTicks="False"
                               Visibility="Collapsed"
                                />
                <!--Hidden Axis that track the annotations' locations (All the added annotations have the same XAxis Id-->
                <s:NumericAxis Name="SharedXAxisCommon"  
                                AutoRange="Never"
                                VisibleRangeLimit="0,10"
                                Height="1"
                                Visibility="Hidden"  
                                Id="CommonID_X"/>
            </s:SciChartSurface.XAxes>

            <s:SciChartSurface.YAxes >
                <s:NumericAxis AutoRange="Never"
                               AutoTicks="True"
                               DrawMinorGridLines="False"
                               DrawMinorTicks="False"
                               DrawMajorGridLines="False"
                               DrawMajorTicks="True"
                               VisibleRange="0,8128000"
                               Visibility="Collapsed"/>
            </s:SciChartSurface.YAxes>
            <s:SciChartSurface.ChartModifier>
                <s1:ModifierGroup>
                    <s1:YAxisDragModifier/>
                    <s:SeriesSelectionModifier >
                        <s:SeriesSelectionModifier.SelectedSeriesStyle>
                            <Style TargetType="s:BaseRenderableSeries">
                            </Style>
                        </s:SeriesSelectionModifier.SelectedSeriesStyle>
                    </s:SeriesSelectionModifier>
                </s1:ModifierGroup>
            </s:SciChartSurface.ChartModifier>

        </s:SciChartSurface>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="0.3*"/>
                <RowDefinition Height="2*"/>
            </Grid.RowDefinitions>
            <TextBlock Grid.Row="1" x:Name="InportValueTextBlock" Text="{Binding InportValue}" Margin="20,0,0,0" FontSize="14"/>
        </Grid>
    </Grid>


    <Border Grid.Column="1" Style="{DynamicResource OriginalBorderBright}" Visibility="{Binding IsLoading, Mode=OneWay, Converter={StaticResource b2vc}}">
        <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
            <ProgressBar Background="Transparent" BorderThickness="0"  HorizontalAlignment="Center" IsIndeterminate="True" Height="10" Width="{Binding ActualWidth, Mode=OneWay, ElementName=Test}"/>
            <TextBlock x:Name="Test" Text="{Binding LoadingMessage, Mode=OneWay}" FontSize="16" Foreground="{DynamicResource ControlDefaultForeground}" Margin="0,10" TextAlignment="Center" Opacity="0.7"/>
        </StackPanel>
    </Border>
</Grid>

“`

1 vote
631 views

I am currently using the ImpulseRenderableSeries3D chart for dynamic data plotting, but I’ve encountered an issue where the data points are sometimes being plotted outside the axis boundaries. I have attached an image to illustrate the problem. Could you please assist me in addressing this issue?

Thank you

  • Ammar Khan asked 1 month ago
  • last active 3 weeks ago
0 votes
600 views

Hello,

I am trying to select a single X value on my chart and get the data values from the X value that I selected. I am still pretty new to SciChart but I was looking around and saw that there is a DataPointSelectionModifier. My goal is to create a VerticalLineAnnotation for the user to use and once that annotation is created, to pull the data values from that X value. Could this be done? Any advice or help is greatly appreciated!

Thanks,

Preston

1 vote
665 views

When using an ObservableCollection of IAnnotationViewModel for Annotations I can add Custom annotations (using CustomAnnotationForMvvm) but not been able to use CompositeAnnotationForMvvm in my view.

I have seen the MeasureXAnnotation example in SciChart_CompositeAnnotations but that is not using mvvm pattern.

MyCompositeAnnotation View

    <s:CompositeAnnotationForMvvm x:Class="MyCompositeAnnotation"
s:CompositeAnnotationForMvvm.Annotations>
    <s:LineAnnotationForMvvm X1="0.5"
                           X2="0"
                           Y1="0.5"
                           Y2="0.5"
                           CoordinateMode = "Relative"
                           DragDirections = "XYDirection"
                           ResizeDirections = "XDirection"
                           StrokeThickness = "1"
                           Stroke ="White"
                           IsEditable = "False"/>

MyCompositeAnnotation view Behind code

  public partial class MyCompositeAnnotation : CompositeAnnotationForMvvm
    {
        public MyCompositeAnnotation()
        {
            this.InitializeComponent();
        }
}

MyCompositeAnnotation ViewModel

public class MyCompositeAnnotationViewModel : CompositeAnnotationViewModel
{
    public override Type ViewType => typeof(MyCompositeAnnotation);
}

Main View Model

public ObservableCollection<IAnnotationViewModel> Annotations { get; set; } = new ObservableCollection<IAnnotationViewModel>();

private void OnAddAnnotation()
        {
            var min = ((TimeSpan)this.sourceRange.Min).Ticks;

            this.Annotations.Add(new MyCompositeAnnotationViewModel ()
            {
            X1 = min + ((TimeSpan)this.sourceRange.Diff).Ticks * 0.1,
            X2 = min + ((TimeSpan)this.sourceRange.Diff).Ticks * 0.3,
            Y1 = 0.1,
            Y2 = 0.3,
            CoordinateMode = AnnotationCoordinateMode.Absolute,
            DragDirections = XyDirection.XYDirection,
            ResizeDirections = XyDirection.XYDirection,
            //                StyleKey = "LineArrowAnnotationStyle", 
            IsEditable = true
        });

Do I need to set the style so the annotation are hooked up correctly? I tried this but it did not work:

 <Style BasedOn="{StaticResource MvvmCompositeAnnotationStyle}"   TargetType="{x:Type annotations:MyCompositeAnnotationViewModel}">
   <Setter Property="s:CompositeAnnotation.Annotations" Value="{s:AnnotationsBinding Annotations}"/>
                                            </Style>
1 vote
633 views

Hello.

I’m facing an issue where a previous team member didn’t deactivate licenses on used devices. The device has now been returned, and deactivation is currently not possible. I need to reuse a project used SciChart. Is there a way to reset the list of all previously activated devices?

Thank you.

  • LEE JW asked 2 months ago
  • last active 2 months ago
1 vote
600 views

I’m new to SciChart and have been following the tutorial provided by SciChart (SciChart WPF 2D Charts > Tutorials > MVVM). Took me hours to make it through the first step in Tutorial 02b – Creating a SciChartSurface with MVVM due to namespace typo in the tutorial, and again I’m now stuck at the very second step.

I cannot replicate the result in Tutorial 03b – Adding Series to a Chart with MVVM. No error found in the output, no binding error whatsoever, but the line is not visible. Also see the attached image comparing what it should look like in the tutorial and what mine looks like.

The project is a direct copy and paste from the tutorial except for the names. I have also cross checked against the code in GitHub. I’ve attached the project as a zip with the bin and obj folders removed.

  • CJ Lo asked 2 months ago
  • last active 2 months ago
1 vote
556 views

I found two other related questions on this forum one being 11 years ago and the other dated 8 years but my recent trial installation encountered the exact same error and I have no way to start testing the charting library in my code.

I followed this tutorial:
https://www.scichart.com/documentation/win/current/webframe.html#Tutorial%2002b%20-%20Creating%20a%20SciChartSurface%20with%20MVVM.html

And I get this this error:
The tag ‘SciChartSurface’ does not exist in XML namespace ‘http://schemas.abtsoftware.co.uk/scichart’

I tried installing through the MSI & Licensing Wizard and I also reinstall the package through NuGet package manager console, and restarting Visual Studio but problem remains.

The SciChart WPF library version: 8.2.0.27935
Visual Studio: Microsoft Visual Studio Community 2022 (64-bit) configured to be x86. Target framework 4.8.

This is very disappointing

  • CJ Lo asked 2 months ago
  • last active 2 months ago
0 votes
639 views

Hello,

I have two questions regarding implementing annotations in MVVM:

I’m currently using the MeasureXYAnnotation as demonstrated in an example, and it works well in the code-behind using the CompositeAnnotation class. However, when trying to implement this in MVVM with CompositeAnnotationViewModel, I’ve noticed that the Update method is missing. This omission prevents me from dynamically updating the measures. Is there a way to achieve the same dynamic behavior in MVVM as in code-behind? If so, could you please guide me on how to do it?

My second question is about the BrushAnnotationViewModel, which I’ve seen used in the trade annotation example. Is this ViewModel exclusive to trade charts, or can it be applied to XYCharts as well?

Thank you,
Best Regards

0 votes
805 views

Hello.
Thanks for previous answer but I can’t check how it work because of new problem. I develop WPF application and try to use MVVM as architecture pattern. In the Model part of my application I used a loop started in the new thread. In that loop I get some data which received to ViewModel and used as chart data. Looks as usual.
But then I tried to set visible range updated object which bound to axis I get exception ‘System.InvalidOperationException: ‘The calling thread cannot access this object because a different thread owns it.’ in my loop. I know it happens in WPF applications and need to use Dispatcher to solve it. But as I know if you try to use MVVM you not needed to use Dispatcher often because WPF-binding in most cases is thread-safe. That happend in my case? How to solve it?
Parts of my code:

XAML

<Window x:Class="HMI.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:s="http://schemas.abtsoftware.co.uk/scichart"
        xmlns:localVM="clr-namespace:MyCom.HMI.ViewModel"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Window.DataContext>
        <localVM:HMIViewModel/>
    </Window.DataContext>
    <Window.Resources>
        <localVM:InverseBooleanConverter x:Key="InverseBooleanConverter"/>
        <localVM:ProcessStateToColorConverter x:Key="ProcessStateToColorConverter"/>
        <localVM:ProcessStateToStartedConverter x:Key="ProcessStateToStartedConverter"/>
        <localVM:ProcessStateToStoppedConverter x:Key="ProcessStateToStoppedConverter"/>
    </Window.Resources>
    <DockPanel>
        <StackPanel DockPanel.Dock="Top" Orientation="Horizontal">
            <StackPanel DockPanel.Dock="Left" Orientation="Vertical" Width="520">
                <Border DockPanel.Dock="Top" Margin="5" Padding="5" BorderBrush="Black" BorderThickness="1,1,1,1" CornerRadius="5">
                    <StackPanel DockPanel.Dock="left" Orientation="Horizontal" Height="40">
                        <Ellipse Margin="5" Height="20" Width="20" HorizontalAlignment="Left" VerticalAlignment="Center" Stroke="Black" Fill="{Binding ProcessState, Converter={StaticResource ProcessStateToColorConverter}}"/>
                        <Label Content="State" Margin="5" Width="90" HorizontalContentAlignment="Left" VerticalContentAlignment="Center"/>
                    </StackPanel>
                </Border>
                <Border DockPanel.Dock="Top" Margin="5" Padding="5" BorderBrush="Black" BorderThickness="1,1,1,1" CornerRadius="5">
                    <Grid DockPanel.Dock="Left" Height="300">
                        <s:SciChartSurface ChartTitle="Profil" RenderableSeries="{s:SeriesBinding RenderableSeries}">
                            <s:SciChartSurface.XAxis>
                                <s:NumericAxis AxisTitle="Position, m" VisibleRange="{Binding XVisibleRange, Mode=TwoWay}"/>
                            </s:SciChartSurface.XAxis>
                            <s:SciChartSurface.YAxis>
                                <s:NumericAxis AxisTitle="Size, um" VisibleRange="{Binding YVisibleRange, Mode=TwoWay}"/>
                            </s:SciChartSurface.YAxis>
                        </s:SciChartSurface>
                    </Grid>
                </Border>
            </StackPanel>
...

ViewModel

namespace MyCom.HMI.ViewModel
{
    public class HMIViewModel : BindableBase
    {      
        private readonly HMIModel _model = new();

        public HMIViewModel()
        {
            _renderableSeries = new ObservableCollection<IRenderableSeriesViewModel>();

            ((INotifyCollectionChanged)_model.TestControlData).CollectionChanged += (s, e) =>  { TestControlDataChanged(e); };

            InitCharts();
        }

...

        private ObservableCollection<IRenderableSeriesViewModel> _renderableSeries;
        public ObservableCollection<IRenderableSeriesViewModel> RenderableSeries
        {
            get { return _renderableSeries; }
            set
            {
                SetProperty(ref _renderableSeries, value, nameof(RenderableSeries));
            }
        }

        private IRange _xVisibleRange;
        public IRange XVisibleRange
        {
            get => _xVisibleRange;
            set
            {
                if (_xVisibleRange != value)
                {
                    SetProperty(ref _xVisibleRange, value, nameof(XVisibleRange));
                }
            }
        }

        private IRange _yVisibleRange;
        public IRange YVisibleRange
        {
            get => _yVisibleRange;
            set
            {
                if (_yVisibleRange != value)
                {
                    SetProperty(ref _yVisibleRange, value, nameof(YVisibleRange));
                }
            }
        }

        private XyDataSeries<double, double> _lineDataDiameter1;

...

        private void InitCharts()
        { // TODO
            _lineDataDiameter1 = new XyDataSeries<double, double>()
            { 
                SeriesName = "Diameter1"
            };

            RenderableSeries.Add(new LineRenderableSeriesViewModel()
            {
                StrokeThickness = 2,
                Stroke = Colors.SteelBlue,
                DataSeries = _lineDataDiameter1,
                StyleKey = "LineSeriesStyle"
            });
        }

        private void TestControlDataChanged(NotifyCollectionChangedEventArgs args)
        {
            if (args.Action == NotifyCollectionChangedAction.Add && args.NewItems?.Count > 0)
            {
                var testControlActualState = args.NewItems.Cast<TestControlActualState>();

                List<double> xValues = new();
                List<double> yValuesDiameter1 = new();

                foreach (var item in testControlActualState) 
                {
                    if (item.Diameter1 > 0f)
                    {
                        xValues.Add(item.FiberLength);
                        yValuesDiameter1.Add(item.Diameter1);
                    }
                }

                _lineDataDiameter1.Append(xValues, yValuesDiameter1);

                // TODO
                if (xValues.Count > 0)
                {
                    var cuurMaxValueX = xValues.Max();
                    XVisibleRange.Max = cuurMaxValueX;
                    XVisibleRange.Min = cuurMaxValueX - 7000f > 0 ? cuurMaxValueX - 7000f : 0;
                }

                // TODO
                if (yValuesDiameter1.Count > 0)
                {
                    var cuurMaxValueY = yValuesDiameter1.Max();
                    YVisibleRange.Max = cuurMaxValueY + 50;
                    YVisibleRange.Min = 0;
                }
            }
        }

Model

namespace MyCom.HMI.Model
{
    public class HMIModel : BindableBase, IDisposable
    {
        private readonly ObservableCollection<TestControlActualState> _testControlData;
        internal ReadOnlyObservableCollection<TestControlActualState> TestControlData { get; }

        public HMIModel()
        {
            _testControlData = new ObservableCollection<TestControlActualState>();
            TestControlData = new ReadOnlyObservableCollection<TestControlActualState>(_testControlData);
        }

...

        private void StartPollerThread()
        {
            _pollerCancellationToken ??= new CancellationTokenSource();

            if (!_pollerCancellationToken.IsCancellationRequested)
            {
                Task.Factory.StartNew(() => PollerDoWork(_pollerCancellationToken.Token), TaskCreationOptions.LongRunning);
            }
        }

        private void PollerDoWork(CancellationToken cancellationToken)
        {
            try
            {
                Thread.CurrentThread.Priority = ThreadPriority.Lowest;
                IsPollerStarted = true;

                while (!cancellationToken.IsCancellationRequested && (_isKeepConnection || _countOfTrying <= MAX_COUNT_OF_TRYING))
                {
                    try
                    {
                        _testControlData.Add(_emulator.GetTestControlActualState());

                        if (!_isKeepConnection && _countOfTrying > 0)
                        {
                            Thread.Sleep(_pollerTimeout / REASK_COEFICIENT);
                            continue;
                        }
                    }
                    catch
                    {
                        // Thread must be alive!!! ...ALWAYS!!!
                    }
                    Thread.Sleep(_pollerTimeout);
                }
            }
            finally
            {
                IsPollerStarted = false;
                _pollerCancellationToken = null;
            }
        }
1 vote
685 views

Hello.
I’m just started to use SciChart and I have a question. How I can mirror XAxis in order to values will be increased from right to left. It is not negative scale but this view is more familiar for users (now I remake the old application). P.S. And be the best if additionally you show me how to make static XAxis with chosen range. I see the example in demo’s “Create Realtime Charts” section (my chart will be real-time too), but my application created via MVVM and I think this example not fully applicable to my case (but I fink after some investigation I will can remake example, but if you help me it be easier).

0 votes
677 views

MVVM VisibleRange binding changed
not work ???

1 vote
666 views

Axis in ChartControl sets the interval.
XAxis

1 vote
733 views

hello.
I added an OverView and scrollbar below the main chart, referring to the CustomOverviewView example.
Graph and scroll functions work without problems.
I want to show the main chart annotations in the OverView.
How can I solve my problem?
have a good day!

0 votes
0 answers
716 views

Hello,

I created a custom chart modifier that moves a vertical line to the position where the user clicks on the scichart surface (I used OnModifierMouseUp to listen to this event), everything works well except the event fires also when the user scrolls or clicks on the scrollbar i defined for the x Axis (I guess because it is part of the surface anyway).

Is there a way to avoid the scrollbar interaction to fire this event? I’d like for it to be fired only when the user clicks directly on the data/surface rather than the scrollbar itself

Thanks a lot

1 vote
748 views

Hi,
I am writing to request some helps about VisibleRange.

I am drawing simple line graphs using NumericAxis and XyDataSeries<long,double>.
I should control axis range so I used XVisibieRange with Int64Range.
But I have an error that It cannot be applied.

How can I control VisibleRange with long type data??

  • CholJin Ko asked 3 months ago
  • last active 3 months ago
1 vote
862 views

Hi,

i have a SciChartSurface with DateTimeAxis as xAxis and a NumericAxis as yAxis.
The fifo capacity is 500 points.

Now what i want to archieve is that when i zoom in that the visible range updates in a matter that its moving with the fifo and not to be frozen and at some point in time see how the data points are discarded.
I already implemented a CustomRubberBandZoomModifier which disables autoranging on Zoom and enables it after Zoom to Extents.

How could i archieve this like shown in the attached image?

Thank you already in advance.

  • Armin Wild asked 3 months ago
  • last active 3 months ago
1 vote
835 views

Hello,

I’m trying to include a legend modifier for a collection of LineRenderableSeriesViewModel, everything works fine except I’m not able to set the series Name to show in the legend, because this view Model doesn’t have a Name property to set so all I get is the series markers (and visibility checkboxes but don’t really need those), does someone know how to show these names?

I tried extending said ViewModel with a custom one adding a Name property but didn’t work.

Thanks a lot,

Marco

1 vote
966 views

Hello,

Normally, if I have a ScichartSurface with a X- and Y-Axis, were both axis AutoRange- properties are set to Always, the surface displays the entire data by adjusting the Visible ranges of the axis after new data has been appended.

This also works if there are multiple Data-Series on the ScichartSurface.

In my case, I have two FastLineRenderableSeries on my Surface. Each of them receiving new data via the Append-function while the x- and y-axis are continuously adjusted automatically to display all the datapoints of both Datasets.

So far so good…

But what would I have to do if I wanted one of the two Datasets to be ignored by the Autorange properties of the x- and y-Axis?

I have already tried to set the X- and YAxisID of one dataset to null, hoping I could make both axis ignore this Dataset while they are adjusting their Visible ranges. However, this only led to error messages.

I could also try to write my own ViewPortManagers and overwrite the OnCalculateNewXRange and OnCalculateNewYRange funvtions, but that seems a little bit excessive.

Is there an easy way to achieve the desired behavior?

Thanks.

1 vote
839 views

I have two SciChartSurfaces

One is a HeatMap (x:Name=”MainChartSurface”), the other a line graph.
I have set it up so that when a vertical cursor is moved the smaller line graph shows a ‘cross-section’ of the heatmap.

The attached image shows the right hand end of the heatmap and the smaller line graph.

The X-axis of the line graph is set to Alignment=Right and this axis has the same range as the y-axis of the heat map – set in xml as:

 MajorDelta="{Binding Source={x:Reference Name=MainChartSurface}, Path=YAxis.MajorDelta, Mode=TwoWay}"
 MinorDelta="{Binding Source={x:Reference Name=MainChartSurface}, Path=YAxis.MinorDelta, Mode=TwoWay}"
 AutoTicks="False"
 VisibleRange="{Binding Source={x:Reference Name=MainChartSurface}, Path=YAxis.VisibleRange, Mode=TwoWay}"

this all works, so if the main graph is zoomed, the 2D line graph Y-axis follows the main graph.

The Y-axis of the line graph has Alignment=Bottom, and it shows the z-values for all y-values at the location vertical cursor (a RolloverModifier) on the main graph.

The problem I have is that the space taken by the axis at the bottom of the charts is different, so the chart areas are different. Look carefully at the attached image and see the bottom axes do not align.

How can I link the space taken to force the bottom axes to stay in alignment?

Thanks
Andrew Milford

1 vote
1k views

Is there any option to hide the axis title of NumericAxis3D in ZxAxisPlane. Want to hide the title highlighted in the attached image.

  • Ammar Khan asked 3 months ago
  • last active 1 month ago
0 votes
0 answers
794 views

Hello!

I have got an exception on databinding an AxisCollection and then sorting a ListBox with charts inside.

Element already has a logical parent. It must be detached from the old parent before it is attached to a new one.
at MS.Internal.Controls.InnerItemCollectionView.AssertPristineModelChild(Object item)
at MS.Internal.Controls.InnerItemCollectionView.Insert(Int32 index, Object item)
at System.Windows.Controls.ItemCollection.Insert(Int32 insertIndex, Object insertItem)
at SciChart.Charting.Visuals.SciChartSurface.slf(IAxis ann, AxisAlignment ano, Boolean anp)
at SciChart.Charting.Visuals.SciChartSurface.slb(IAxis ane, AxisAlignment anf, Boolean ang)
at SciChart.Charting.Visuals.SciChartSurface.ske(IAxis aly)
at SciChart.Core.Extensions.EnumerableExtensions.ForEachDo[T](IEnumerable1 enumerable, Action1 operation)
at SciChart.Charting.Visuals.SciChartSurface.OnApplyTemplate()
at System.Windows.FrameworkElement.ApplyTemplate()
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.DockPanel.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Border.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Border.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Control.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Border.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Border.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Control.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.WrapPanel.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.ContextLayoutManager.UpdateLayout()
at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

I am able to reproduce the issue. Please see the attachment.

I will not write more, since the example is simple.

What can i do to avoid this issue?

Thank you very much!
Paul

1 vote
792 views

Good day,

we are using the VerticalSliceModifier for sorted data and it works very good.

<local:VerticalSliceModifierExt x:Name="SliceModifier">
<s:VerticalSliceModifier.VerticalLines>
    <chartModifier:SnappyVerticalLine x:Name="VerticalLine"
                          ShowLabel="False"
                          X1="0"
                          Y1="0"
                          CoordinateMode="Absolute"
                          IsEditable="True">
    </chartModifier:SnappyVerticalLine>
</s:VerticalSliceModifier.VerticalLines>

Please see the image “Example Vertical Slice Modifier”.

The challange is to have something similar for unsorted data.

One of the issues are multiple intersections. Please see the image “Multiple Intersections” where i would like be able to select what intersections shall be highlighted.

The next challange is the usage of multiple series and synchronization based on a different property (t for time). Please see “Multiple Series” image.

We already have IPointMetadata with X,Y and t to be able to find the data point to highlight.

My question: Is there already some modifier chat can help with this requirements or what would be a clean solution if we need to develop a custom modifier.

Thank you in advance
Paul

1 vote
1k views

Am trying to get the same look and feel of the cursor modifier on both the charts.

  • am not able to get the tool tip to show on the other side.
  • am not able to get the get horizontal lines.
  • P S asked 4 months ago
  • last active 4 months ago
1 vote
1k views

Hello,

i’m trying to build a chart using a Stripe Data series, on the X axis i have a DatetimeAxis while on Y axis i have a Numeric.

I have an observable collection of IRenderableSeriesViewModel, and when i try to add a StripeRenderableSeriesViewModel if the dataseries contains many elements (>2000) it logs this exception below:

Exception thrown: ‘System.InvalidCastException’ in System.Private.CoreLib.dll
SciChartSurface didn’t render, because an exception was thrown:
Message: Invalid cast from ‘Double’ to ‘DateTime’.
Stack Trace: at System.Double.System.IConvertible.ToDateTime(IFormatProvider provider)
at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
at SciChart.Charting.Model.DataSeries.StripeDataSeries2.rwx(ResamplingParams gib, StripePointSeries gic)
at SciChart.Charting.Model.DataSeries.StripeDataSeries
2.ToPointSeries(ResamplingParams resamplingParams, ResamplingMode resamplingMode, IPointResamplerFactory factory, IPointSeries lastPointSeries)
at dih.lay(AxisCollection gg, IRenderableSeries gh, RenderPassInfo gi, IPointResamplerFactory gj, Boolean gk, IDataSeries& gl, IndexRange& gm, IPointSeries& gn, Int32& go)
at dih.lax(ISciChartSurface gd, Size ge, Boolean gf)
at dih.RenderLoop(IRenderContext2D renderContext)
at SciChart.Charting.Visuals.SciChartSurface.DoDrawingLoop()
Exception thrown: ‘System.Threading.SynchronizationLockException’ in SciChart.Drawing.dll
SciChartSurface didn’t render, because an exception was thrown:
Message: Object synchronization method was called from an unsynchronized block of code.
Stack Trace: at System.Threading.Monitor.Exit(Object obj)
at irv.hds(jbq r, SCRTRenderContext s)
at jbv.Dispose()
at SciChart.Charting.Visuals.SciChartSurface.DoDrawingLoop()

Binding and data i’m pretty sure are ok since with fewer data it works fine

EDIT: i was able to reproduce the issue in the wpf sample project (repo), just replace GanttChartViewModel.cs with the sample one i have attached here and it can be reproduced by navigating to the Gantt chart example

1 vote
934 views

Hello everybody,

Having two FastLineRenderableSeries objects, how can I display them on the same chart, where the X axis represents the time, but the second one with a small time delay on the x-axis (shifted)? Thanks.

1 vote
1k views

Dear SciChart team,

I’ve been using SciChart WPF 2D professional for many years now, but this week I’m having a strange problem on one of my colleague’s new laptop (Lenovo X13). The charts seem frozen.

To check if it’s a problem with my application or something else, I installed SciChart on the laptop and launched the SciChart WPF v7 example (.net framework). Then I found all the charts do not render properly.

I have searched the questions on the forum, and I found this https://www.scichart.com/questions/wpf/zoom-not-working-properly-on-one-single-computer, it seems there was someone had the same issue, but it was posted 10 years ago, so I am not sure does the intel graphics hardware still has this problem now days.

I am asking my colleague to upgrade the graphic adapter’s driver, but if you have any other idea to fix this issue, please also let me know.

Best Regards
Chris

  • Chris Chen asked 4 months ago
  • last active 4 months ago
1 vote
940 views

a

1 vote
4k views

Hello,
I’m currently rewriting a program in .net7 WPF using MVVM as much as possible.

In my MainViewModel:

I read data from a CSV file and transforming it into an ObservableCollection of LineRenderableSeriesViewModel (stored in the « RenderableSeriesViewModels » variable) . Additionally, the Y axes are transformed into ObservableCollection of IAxisViewModel (within the « Yaxes » variable).
Each series corresponds to a LineRenderableSeriesViewModel and each Y axis is represented as a NumericAxisViewModel. The X-axis is a DateTime common to all series and is declared only in XAML.

Within my view’s XAML:

I declare RenderableSeries=”{s:SeriesBinding RenderableSeriesViewModels}” and YAxes=”{s:AxesBinding YAxes}. I’ve defined a legend template to add several elements:
– DataContext=”{Binding RenderableSeries}”
– A checkbox to toggle serie visibility (IsVisible binding).
– A checkbox to toggle Y-axis visibility for the serie (YAxis.Visibility binding).
– A color picker to change the color of a serie, bound to “Stroke”, “YAxis.TickTextBrush”, and “YAxis.BorderBrush”
– A slider for adjusting serie thickness (StrokeThickness binding).

Results:

Each element acts on the graph as expected: RenderableSeries updates and the graph refreshes correctly.

In the MainViewModel, RenderableSeriesViewModels and YAxes are not updated for all elements:
– “IsVisible” and “StrokeThickness” for the concerned series are instantly modified in RenderableSeriesViewModels but “Stroke” is not.
– “YAxes” is not updated.

The code for the LegendTemplate and a screenshot of the resulting legend are in the attachements.

Could you please help me to understand what I do wrong?

0 votes
0 answers
4k views

Several legends are displayed using LegendModifier.

  1. Using ScrollViewer.VerticalScrollBarVisibility=”Auto”, it was possible to move using mouse scrolling, bar grabbing, etc., but it did not work when the border was dragged in a screen touch environment. Is there a way to drag on a touch monitor?

  2. It is being displayed using Orientation=”Horizontal”, but there is a limit to displaying it on one line due to the large number of legends. What document can I refer to if I want to change it to display as multi-line? I think the MVVM method would be best.

  • Lee Ji Un asked 4 months ago
  • last active 4 months ago
0 votes
1k views

My code is as below

for (int i = 0; i < plot.ZData.Length; i++)
{
var xData = plot.XData[i];
var yData = plot.YData[i];
for (int j = 0; j < xData.Length; j++)
{
dataSeries[i, j] = yData[j];
}
}

Here Z values and X values are linear and Y values are in Logarthimic scale.
I have used Z and Y axis as NumericAxis3D and X is LogarithmicNumericAxis3D .

Is something wrong here? Please suggest.

1 vote
4k views

The format of the set DateTimeAxis x-axis is (“yyyy-MM-dd hh:mm:ss”), but when the chart is enlarged, if the range is short, it changes to (“hh:mm:ss”). I want to display year/month/day information as well, even if the range is short. Please answer with the MVVM model.

  • Lee Ji Un asked 5 months ago
  • last active 5 months ago
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