ChartLength Property
From Measurement Studio User Interface
ChartLength Property
Syntax
CWGraph.ChartLength
Data Type
Purpose
Specifies how many points the graph stores when charting before it deletes old data.
Remarks
Set this property to 0 to store only enough points to fill the plot area.
If the AutoScale property is enabled on the x axis, the system does not recalculate the chart length.
Only the ChartY method supports automatic chart length calculation. The ChartXY and ChartXvsY methods do not.
If you change the x-axis range (the XInc parameter) between calls to ChartY, there might not be enough data to fill the plot area.