[mapserver-users] Get a pixel's RGB by latlon?

[Gregor Mosheh]

Hi, all.
I have a bunch of Mapserver layers, with GeoTIFFs and sometimes 
tileindexes as the backend. Given a single layer, I would like to get 
the color of the pixel at a given lat/lon.

If anyone has code handy that does this, preferably in either PHP or 
Mapserver-via-CGI, I would appreciate it greatly, as it would be a major 
time saver.

There seem to be a few methods of doing this, from CGI's mode=query to 
MapScript's queryByPoint() but a working example would sure be nice, 
since my queries are returning nothing and the Python Mapscript example 
on the MS website is apparently for an older version of Mapscript.

-- 
Gregor Mosheh / Greg Allensworth, BS, A+
System Administrator
HostGIS cartographic development & hosting services
http://www.HostGIS.com/

"Remember that no one cares if you can back up,
  only if you can restore." - AMANDA