If you need to manipulate the data in a series directly (for example by resetting the ‘Points’ property of a Polyline generated by RainPro) you need to determine the internal Gui name of the APL object. To do this, it is best to name the chart and the series explicitly, for example:

ch.Name 'XY Plot'
ch.Series 'Ellipse'

before you plot the chart. See Sample for a typical example.

Now you can find the APL Gui name(s) by calling:

gui„'#.pgi'#.PostScrp.GuiId'XY Plot' 'Ellipse'

In this case two names will be returned, one for the line and one for the markers. You can see the effect of erasing one or both ...

 gui
#.pgi.ps12  #.pgi.ps13 
Œex '#.pgi.ps12'

... this removes the line, leaving only the markers in place.