interactive value determination?

[lewis at NRC.WES.ARMY.MIL]

All,

I am fairly new so please forgive me if this is an obvious question.

I have produced some raster files using Grass tools and I want to
be able to look at the raster file and, as I look at it, click on
positions within the displayed raster and have the value at that point
displayed, say, to standard out or a window or just anywhere that I can
see it. I want to be sure the raster values produced are really doing what
I think they are. Any suggestions?

Lewis
lewis at nrc.wes.army.mil