Tag: UniformXyDataSeries

Questions

1 vote

2k 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

Alexandru Neamtu asked 7 months ago
last active 7 months ago

0 votes

2 answers

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SciChartOverview with UniformXyDataSeries<double>

WPF SciChartOverview UniformXyDataSeries

Hi I am using UniformXyDataSeries<double> .
And I can’t work with SciChartOverview.
Before that I was working with XyDataSeries<double, double> and everything worked very well.
And now the entire SciChartOverview is simply black.. (still functions as a scrollbar)
And I get this –

SciChartSurface didn’t render, because an exception was thrown:
Message: Object reference not set to an instance of an object.

Stack Trace: at
SciChart.Charting.Visuals.RenderableSeries.DrawingProviders.MountainSeriesDrawingProvider.trj(yhn
ayc, IPointSeries ayd) at
SciChart.Charting.Visuals.RenderableSeries.DrawingProviders.MountainSeriesDrawingProvider.OnDraw(IRenderContext2D
renderContext, IRenderPassData renderPassData) at
SciChart.Core.Extensions.EnumerableExtensions.ForEachDo[T](IEnumerable1 enumerable, Action1 operation) at
SciChart.Charting.Visuals.RenderableSeries.BaseRenderableSeries.InternalDraw(IRenderContext2D
renderContext, IRenderPassData renderPassData) at
SciChart.Charting.Visuals.RenderableSeries.BaseRenderableSeries.SciChart.Charting.Visuals.IDrawable.OnDraw(IRenderContext2D
renderContext, IRenderPassData renderPassData) at
qxc.cyh(RenderPassInfo cff, IRenderContext2D cfg, Int32 cfh) at
qxc.cyg(ISciChartSurface cfc, RenderPassInfo cfd, IRenderContext2D
cfe) at qxc.RenderLoop(IRenderContext2D renderContext) at
SciChart.Charting.Visuals.SciChartSurface.DoDrawingLoop()

This is the code:

<s:SciChartSurface 
           x:Name="sciChart0" ... >  <s:SciChartSurface.RenderableSeries >
                        <s:FastLineRenderableSeries x:Name="RenderableSeries0"  DataSeries="{Binding samples[0]._Series, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                                            Stroke="{Binding samples[0].Color, Mode=TwoWay}" 
                                            StrokeThickness="2" s:LegendModifier.IncludeSeries ="{Binding samples[0].Show, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
                      </s:SciChartSurface.RenderableSeries > <!-- .....  -- >
    </s:SciChartSurface>




    <!-- Declare the SciChartOverview and bind to the main chart -->
                <s:SciChartOverview  x:Name="sciChart0Overview" MouseWheel="sciChart0Overview_MouseWheel" Margin="10,0,10,0"
                                    DataSeries="{Binding ElementName=sciChart0, Path=RenderableSeries[0].DataSeries}"
                                    ParentSurface="{Binding ElementName=sciChart0}" Height="50" VerticalAlignment="Bottom"
                                    SelectedRange="{Binding ElementName=sciChart0, Path=XAxis.VisibleRange, Mode=TwoWay}"
                                     ToolTip="Use the mouse wheel to change the sample shown here."
                                     />

Again – everything worked fine for me until I changed the data structure…
[samples[0]._Series is type of UniformXyDataSeries<double>()]
Thanks!