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633 views

Hi!

I’ve tried to access the values to print them in a different view, but I cant reach them. So my question is there a specific way to reach them?

0 votes
2k views

I managed to be able to render the EllipsePointMarkers, but here is the thing: It only works when I declare the PointMarker in my view model inside the constructor of the XyScatterRenderableSeriesViewModel. The Style with the PointerMarkerTemplate is NOT APPLIED for some reason. Could this be a bug? Please note that in the following code in the view model I specify the color to be “Red” (ARGB(255, 255, 0, 0) but in xaml the template specifies yellow for the fill and stroke.

I absolutely need the PointMarker Template to work because I want to be able to change the color and thickness of the Scatter points during runtime via UI (function in my custom legend).

The following are code snippets from my view model and the corresponding xaml:

ChartSeries.Add(new XyScatterRenderableSeriesViewModel()
                {
                    DataSeries = dataSeries,
                    //Stroke = color,
                    //StrokeThickness = 10,
                    IsVisible = isVisible,
                    AntiAliasing = useAntiAliasing,
                    IsSelected = isSelected,
                    XAxisId = "DateTimeAxis",
                    YAxisId = yAxisId,
                    PointMarker = new EllipsePointMarker()
                    {
                        Fill = Color.FromArgb(255, 255, 0, 0),
                        Stroke = Color.FromArgb(255, 255, 0, 0),
                        StrokeThickness = 5
                    }

                });


<UserControl.Resources>

    <Style TargetType="{x:Type s:XyScatterRenderableSeries}">
        <Setter Property="PointMarkerTemplate">
            <Setter.Value>
                <ControlTemplate>
                    <s:EllipsePointMarker Fill="Yellow" Stroke="Yellow" StrokeThickness="15"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <s:EffectConverter x:Key="EffectConverter"/>

    <DropShadowEffect x:Key="LegendDropShadow" BlurRadius="10" Direction="-45" ShadowDepth="5" Color="Black"/>

    <SolidColorBrush x:Key="LegendTextBrush"  Color="#5F5F5F"/>

    <resources:VisibilityToBooleanConverter x:Key="VisibilityToBooleanConverter"/>

    <resources:CustomCategoryDateTimeAxisLabelProvider x:Key="LabelProvider"/>

</UserControl.Resources>
  • bbmat asked 11 months ago
  • last active 11 months ago
0 votes
2k views

I refactored from using custom RenderableSeries to a custom RenderableSeriesViewModel which has fixed a refresh bug in the chart:

  public class CustomExclusionRenderableSeriesViewModel : BaseRenderableSeriesViewModel
  {
     public override Type RenderSeriesType => typeof(CustomExclusionRenderableSeries);
  }

However I am invoking MouseLeftButtonUp in the chart code behind and performing a hit test. The HitTest method is not exposed on the BaseRenderableSeriesViewModel:

 private void SciChartSurfaceMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
 {                          
    // Perform the hit test relative to the GridLinesPanel
    Point hitTestPoint = e.GetPosition(this.sciChart.GridLinesPanel as UIElement);

    // Get hit test the RenderableSeries using interpolation
    this.ViewModel.HitTestInfo = this.ViewModel.ExclusionSeries.HitTest(hitTestPoint, true);

Is there any way to get the series instance from the view model & hit test it?

0 votes
0 answers
2k views

Hello,
I’m developing the WPF charts application in C#. I have an activated developer license.
When I compile my code with DUBUG mode, XamlParseException occurred. (In release mode, there are no exception)

That only happened in my new SciChart project, old one never happened.
I already reference the library like SciChart.Charting and the runtime license key is included in App.xaml.cs.

0 votes
2k views

I have multliple renderable series on one scichartsurface and each series has its own y-axis, when CursorModifier-cross moves over line/scatter point/ohlc/candle series how can I ONLY show the y-Value on the with the rendered series matching y-Axis?

With multiple rendered series its virtually impossible to determine which y-Axis value pertains to the specific point of the CursorModifier which “hit-tests” a rendered series.

Is there a simple way to only highlight the y-Value on the matching yAxis as soon as the CursorModifier hit-tests a rendered series? I do not mind to show all yValues on all yAxes when the CursorModifier does not hit-test any rendered series.

Thanks

  • bbmat asked 3 years ago
  • last active 3 years ago
0 votes
0 answers
4k views

I use a similar multi-pane setup as your multi-pane stock chart demo and specify the ChartModifier within SciChartSurface.ChartModifier as follows:

<s:SciChartSurface.ChartModifier>
                        <s:ModifierGroup s:MouseEventGroup="SharedMouseGroup">
                            <s:RubberBandXyZoomModifier IsAnimated = "False" IsXAxisOnly = "True" ExecuteOn = "MouseRightButton"/>
                            <s:ZoomPanModifier XyDirection="XYDirection" ClipModeX = "ClipAtExtents" ExecuteOn ="MouseLeftButton" />
                            <s:MouseWheelZoomModifier XyDirection = "XYDirection"/>
                            <s:ZoomExtentsModifier IsAnimated = "False" ExecuteOn = "MouseDoubleClick" />
                            <s:CursorModifier SourceMode="AllSeries"  UseInterpolation="True" ShowAxisLabels="True"/>
                            <s:LegendModifier Name="GeneralLegend" ShowLegend="True" LegendPlacement ="Inside" GetLegendDataFor="AllSeries" Margin="10" LegendItemTemplate="{StaticResource LegendItemTemplate}"/>

                            <s:SeriesSelectionModifier ReceiveHandledEvents="True">
                                <s:SeriesSelectionModifier.SelectedSeriesStyle>
                                    <Style TargetType="s:BaseRenderableSeries">
                                        <Setter Property="StrokeThickness" Value="10"/>
                                    </Style>
                                </s:SeriesSelectionModifier.SelectedSeriesStyle>
                            </s:SeriesSelectionModifier>

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

The problem I have is that the vertical chart modifier (a vertical line as part of the crosshair that vertically tracks the mouse cursor) is only visible within the respective pane where the mouse cursor is currently located at. When I move the mouse cursor onto another pane then the vertical line of the cross hair tracks in this different pane but only within this specific pane. I want the vertical line to be visible across all panes just like in your multi-pane stock chart demo. When I pan or zoom any of the panes then all panes are responding accordingly and in synchronized fashion, so I am sure the panes’ xaxis are all correctly linked to the primary xAxis.

What am I doing wrong?

Thanks

  • bbmat asked 4 years ago
  • last active 4 years ago
0 votes
0 answers
4k views

I noticed that there are problems when I try to add data series, create renderable series, or annotations while the view that hosts the scichartgroup and/or scichartsurface(s) is/are not yet initialized/rendered. Could this be a bug? After all it should not matter when the view is rendered; when it is rendered its elements bind to the matching properties of its viewmodel, no?

This poses problems for me because I am forced to take the viewmodel-first approach. So, when I create an instance of my viewmodel and then invoke methods in the viewmodel that add data series and render such I am experiencing errors (the rendered series is not displayed on the chart, though annotations strangely are).

I identified the problem to be 2-fold, one is that I have to create renderable series on the UI thread (solved that, no issue) but my other big problem is that the view is actually not instantiated/rendered unless the view is in focus/visible which is not the case during runtime when data series are added via viewmodel.

How can I solve this problem?

  • bbmat asked 4 years ago
  • last active 4 years ago
0 votes
0 answers
5k views

I try to add data series and have them rendered on a chart surface. The surface and entire chart library is wrapped in an mvvm-based api. The sci chart control and wrapping library are rendered on a document panel. I add new data series via the viewmodel and here is where I have some unexpected behavior:

a) When being on a different document panel, meaning the chart control is NOT visible, and when I add a new data series via view model and then view the document panel that hosts the sci chart control, no chart series are rendered on the chart but I do see the correct legend data (such as chart series name, color, stroke thickness). Please see below screen shot “Capture1.jpg” .

b) When I make the sci chart control visible by viewing the document panel that hosts the sci chart control and then via a button and command add the very same data series via my chart control’s view model the charts are correctly rendered. Please see “Capture2.jpg”.

My question is why is that the case? I basically expose a method in my chart library view model that lets me add data and if I invoke that methods while being on a document panel that does not host the chart control the added data series is not rendered on the chart. But strangely the correct chart legend data are displayed and also the chart control itself is correctly rendered. No problems when the hosting document panel is active and the very same method is invoked.

Basically what I currently observe is that the data series are not rendered at all as long as the chart control is not “in view” or the hosting document panel is not selected. I am sure programmatically all references and bindings are correct.

I have spend many hours debugging this issue and do not seem to find an answer. Any pointers?

Thanks a lot,
Matt

Edit:

Here is how I bind the content control to the view model of my sci chart charting library (user control)

<ContentControl Grid.Row="1" Content="{Binding ChartControl, Mode=OneWay}" />

…and the view model is instantiated in the hosting view model constructor:

public MainWindowViewModel()
    {
       ChartControl = new SciChartControlViewModel();

        ExitApplicationCommand = new RelayCommand(OnExitApplicationCommand);
        LoadDataSeriesFromFilesCommand = new RelayCommand(OnLoadDataSeriesFromFilesCommand);
        RefreshDataSeriesFromFilesCommand = new RelayCommand(OnRefreshDataSeriesFromFilesCommand);


        Test();

    }

…Test() performs the following action:

private void Test()
    {
        var quotes = new List<Quote>();
        List<DateTime> timeStamps = new List<DateTime>();
        List<double> values = new List<double>();
        List<SciChartAnnotation> annotations = new List<SciChartAnnotation>();
        Random rand = new Random((int)DateTime.Now.Ticks);
        DateTime currentDt = DateTime.Now;
        double currentValue = 0;

        for (int index = 0; index <= 50000; index++)
        {
            var randomValue = rand.NextDouble();
            currentDt = currentDt + TimeSpan.FromSeconds(randomValue);
            currentValue = currentValue + randomValue - 0.5;

            if (index % 1000 == 0)
            {
                var buySell = rand.NextDouble() > 0.5 ? SciChartAnnotationDirection.Buy : SciChartAnnotationDirection.Sell;
                annotations.Add(new SciChartAnnotation(buySell, currentDt, currentValue, "Index:" + index));
            }

            timeStamps.Add(currentDt);
            values.Add(currentValue);

            quotes.Add(new Quote(){DataProviderId = "Provider1", SymbolId = "Symbol1", QuoteType = QuoteType.BidAsk, CompressionType = TimeCompressionType.NoCompression, CompressionUnits = 0, TimeStamp = currentDt, Bid = currentValue, Ask= currentValue + 0.05, });

        }

        ChartControl.AddDataSet("Pane1", "0.00000", quotes, annotations);
        //ChartControl.AddDataSet("MattSeries", ChartType.Scatter, 1, "0.00000", timeStamps, values);

    }

…it basically tries to render chart series and annotations.

Strangely, as mentioned before, the series legends render correctly and the annotations also all render correctly but the chart series do not! Could this be a bug? Please refer to the image “Capture3” for a screenshot.

  • bbmat asked 4 years ago
  • last active 4 years ago
0 votes
5k views

Hello,

I wonder what the most efficient way is to completely reset (clean up) a SciChartGroup? I add all kinds of panes, add data series, add renderable series on different panes. Now, with a single call I like to reset the SciChartSurface to its original state (empty). I want to have all panes removed, as well as references the sciChartGroup may hold to panes, and references the panes hold to different renderable series and data series. I tried to clear ChartPaneViewModels, an observable collection that holds objects of type BaseChartPaneViewModel (which in turn implements IChildPane and ViewModelBase) but that did not have any effect. My SciChartGroup binds via ItemsSource to ChartPaneViewModels

What is your recommendation how to best reset the whole sciChartGroup?

Thanks,
Matt

  • bbmat asked 4 years ago
  • last active 4 years ago
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