| Re: Relationship between IDLgrXXXX and associated NG functions. Was: IDL documentation gripe - How to erase a new graphics window? [message #80123 is a reply to message #80122] |
Tue, 01 May 2012 07:27  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Paul van Delst writes:
> I've started replacing the DG draw widgets in my widget apps with NG window widgets. The way I use a particular app was
> to plot different things based on a selection from a button group. In DG there's no worries - you just call plot and the
> erase happens automagically and the new plot appears. But in NG the plots just pile on top of each other. I've searched
> the IDL documentation for the PLOT() and WINDOW() functions but there doesn't appear to be an "Erase" method.
>
> However, when I look at the IDLgrWindow window documentation there is the Erase method listed.
>
> Which does work with the window created using Window(),e.g.
>
> IDL> w=window()
> % Loaded DLM: XML.
> IDL> p=plot(indgen(100),current=w)
> IDL> w.erase
>
> So, does this mean ALL IDLgrXXXX methods work with the associated NG functions (e.g. IDLgrPlot for PLOT(), IDLgrSurface
> for SURFACE() etc)?
>
> And what about vice-versa?
You must be living in a perfect world!
I would say the connection between IDLgrXXXX methods
and function graphics routines is "casual" at best.
Maybe "haphazard" or "accidental" is a better description.
Most things work right up until you are too committed to
turn back. :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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