I’m having some trouble because all the points in a DataSeries have the same value, and those values are rendered outside the surface. (By constant values I mean that all the values on the y axis are equal to 19.8).
If I put a zoom modifier on the chart and zoom out, I can find my values, but when the chart is displayed for the first time, they are not visible.
This makes me think that the scaling of the y axis is not calculated correctly on the chart.
I have attached a code example.
This can be resolved by setting a YAxis.GrowBy value as follows:
<s:SciChartSurface x:Name="sciChartSurface" s:ThemeManager.Theme="BrightSpark" > <s:SciChartSurface.ChartModifier> <s:ModifierGroup> <s:LegendModifier x:Name="legendModifier"/> <s:MouseWheelZoomModifier /> <s:ZoomPanModifier /> </s:ModifierGroup> </s:SciChartSurface.ChartModifier> <!-- Defines the renderable series, which map 1:1 to data-series. R-Series may be styled --> <s:SciChartSurface.RenderableSeries> <s:FastLineRenderableSeries SeriesColor="Red" YAxisId="yAxis1"/> </s:SciChartSurface.RenderableSeries> <!-- Defines the XAxis --> <s:SciChartSurface.XAxis> <s:NumericAxis> </s:NumericAxis> </s:SciChartSurface.XAxis> <!-- Defines the YAxis --> <s:SciChartSurface.YAxes> <s:NumericAxis TickTextBrush="red" AxisAlignment="Left" Id="yAxis1" > <s:NumericAxis.GrowBy> <s:DoubleRange Min="0.1" Max="0.1"/> </s:NumericAxis.GrowBy> </s:NumericAxis> </s:SciChartSurface.YAxes> </s:SciChartSurface>
Note that the calculation to generate the YAxis range is as follows:
UPDATE: This issue was fixed in v2.0 or later of SciChart. It will now automatically expand the range around constant values even without a GrowBy.
Hope this helps!
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