[Mapserver-users] status of bug 270: using CLASS in a raster layer only to produce legend entry

[Daniel Morissette]

Emilio Mayorga wrote:
> 
> I'm using HTML Legends. I have a raster layer (a TILEINDEX, actually) 
> that's RGB, and I'd like to display a pre-made legend image for it. When 
> I add a CLASS element to the layer just to use the KEYIMAGE element, the 
> legend renders (including the key image), but the map image itself bombs 
> with a GDAL error message.
> 
> I saw this message thread from february:
> [Bug 270] 24-bit image processing crash
> http://mapserver.gis.umn.edu/data2/wilma/mapserver-users/0302/msg00175.html
> 
> In Bugzilla, the last entry for bug 270 is from july:
> -- Additional Comment #4 From Daniel Morissette  2003-07-09 22:46
> Let's revisit this in 4.1 as an enhancement.
> 
> 
> Does this mean that there is no solution to this problem currently?
> 

The crash described in bug 270 should have been fixed quite a while ago 
according to the bug report. What was "to be revisited" in this bug was 
the enhancements to the legend.

There is currently another problem in version 4.x related to empty 
classes, see bugs 495 and 499:
http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=499
http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=495

If that's the bug you ran into, then adding an empty STYLE object or 
setting a color in your CLASS would avoid the crash.

Daniel
-- 
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  Daniel Morissette               morissette at dmsolutions.ca
  DM Solutions Group              http://www.dmsolutions.ca/
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