Re: Removing maps from display

• To: gunnar.sletta@xxxxxxxxxxx
• Subject: Re: Removing maps from display
• From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Date: Thu, 25 Oct 2001 08:09:33 -0500

Hi Gunnar,

> I've created a user interface wrapping the display and some of its Maps
> such as Color, Alpha, Contour etc. The user should be able to turn these
> maps on and off as he pleases. I could however, not find a method for
> removing a map from the display. The only way I could find was to call
> DisplayImpl.clearMaps() and re-add the others afterwards. The clearMaps()
> method could only be called when the datareference vector is empty.
> 
> What I had to do is then, remove all references from the display, clear all
> maps, add all but the one map, add all references back again. This seems to
> be rather inefficient. Is there another way of doing this a bit more
> smoothly?

I'm afraid that's what you have to do. However, you can
write a method, perhaps with signature:

  public static void addMap(DisplayImpl display, ScalarMap map)l

that hides all this logic from applications.

Cheers,
Bill
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html

• References:
  • Removing maps from display
    • From: gunnar . sletta