Why is plot continuosly redrawing?

[NielsUll]

Hi!

We have noticed that we have a fair amount of CPU load and memory churn, even when the application is doing absolutely nothing and we are showing no data.
It seems that it is continuously calling our handler for the FormatValueLabel event?

The stack trace is this:

Code: Select all

  DiagnosticAnalyzer.Module.Common.dll!DiagnosticAnalyzer.Module.Common.Views.XyStackPlotControlView.AxisBase_OnFormatValueLabel(object sender, Arction.Wpf.SemibindableCharting.Axes.FormatValueLabelEventArgs e) Line 102	C#
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.Axes.AxisBase.DEC(double A)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.LightningChartUltimate.HWC(Arction.Wpf.SemibindableCharting.Axes.AxisX A, float B, float C, int F, double G, double H, bool I, bool J, bool K, bool L, bool M, ref System.Collections.Generic.List<Arction.RenderingDefinitions.BatchTextDrawItem> O, ref System.Collections.Generic.List<Arction.RenderingDefinitions.BatchTextDrawItem> P, ref System.Collections.Generic.List<Arction.RenderingDefinitions.BatchTextDrawItem> Q)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.LightningChartUltimate.GWC()	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.LightningChartUltimate.EUC()	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.LightningChartUltimate.JNC()	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.LightningChartUltimate.HNC()	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.LightningChartUltimate.FNC()	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.LightningChartUltimate.QAC(object A)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.LightningChartUltimate.NXB(object A, object B, uint C, string F)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.ChartNode.LXB(object A, object B, uint C, string F)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.Views.ViewXY.ViewXY.LXB(object A, object B, uint C, string F)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.ChartNode.NXB(object A, object B, uint C, string F)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.ChartNode.LXB(object A, object B, uint C, string F)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.ChartNode.NXB(object A, object B, uint C, string F)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.ChartNode.LXB(object A, object B, uint C, string F)	Unknown
 	Arction.Wpf.SemibindableCharting.LightningChartUltimate.dll!Arction.Wpf.SemibindableCharting.Views.ViewXY.AutoYFit.m_timerAutoFit_Tick(object sender, System.EventArgs e)	Unknown
 	WindowsBase.dll!System.Windows.Threading.DispatcherTimer.FireTick(object unused) Line 318	C#
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) Line 104	C#
...

Why is this happening? I assume it has to do with autofitting of the Y axis - but we haven't even loaded a data set?
Can we turn it off - our users are likely to be annoyed at our application eating 5% cpu even when passive?

[ArctionKestutis]

Hello,

It looks like that enable _chart.ViewXY.ZoomPanOptions.AutoYFit.Enabled property. In that case the update/refresh interval is controlled by ZoomPanOptions.AutoYFit.UpdateInterval property (Auto Y scale update interval in milliseconds). Otherwise chart is update whenever you move mouse, add points, zoom, pan etc.

All the best.

[NielsUll]

Thanks - that fixed it.