[vtkusers] Adding shapes to vtkXYPlotActor -Didn't make first post

[Harlow Eric D Contr 412 TW/ENR]

Hello,

Does anyone know of an example for overlaying shapes (lines, arrows,
rectangles, and circles) on a vtkXYPlotActor plot.  I would like to place
them either in conjunction with data coordinates or absolute window
coordinates.  If there isn't an example could someone give some insight as
to how I might do this?  Also, I would like to insert a grid on the plot as
well.

Thanks,

-Eric