checking xyplot overlays

Dimitris Pantzartzis (panas@rain.org)
Wed, 20 Nov 1996 10:20:44 -0800 (PST)

To subscribers of the xforms list from Dimitris Pantzartzis <panas@rain.org> :

how can I check if an xyplot overlay with a given ID number is added/exists?

This is what I am trying to do:

if( hide_overlay ) {
check if overlay ID=1 exists
if( overlay ID=1 exists )
fl_remove_overlay()
}

since overlays are not separate objects it seems I cannot use the
object->active field...

Thanks,

Dimitris(panas@rain.org)
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