Source: plotting/hs_plot__cursor_within.pro
hs_plot::cursor_within
Select the plot transform, within whose region the cursor
lies.
Usage:
tform_index = pltref -> cursor_within( x, y)
Arguments:
x,y float input Normalized cursor coordinates.
Restriction:
If the cursor is not in any region then the transforms are
unchanged, and -1 is returned.
History:
Original: 1/6/94; SJT
Converted to function & Plot object method: 5/6/00; SJT
Use !x & !y regions to deal with !p.multi: 14/11/00; SJT