[Mapserver-users] MapServer Bug - Tiled Rasters

[Frank Warmerdam]

Folks,

I just wanted to notify everyone that there was a serious bug introduced
in the MapServer 4.0 release with handling of colors when rendering GDAL
files.   The most likely way this would show up would be missing or
mis-rendered tiles when using a raster tile index and classes to provide
coloring to an 8bit pseudo-colored output.

There is a trivial patch that can be applied to MapServer 4.0 or MapServer 4.1
source if needed, and the fix has been incorporated into CVS and will appear
in future releases of MapServer.

The bug is further described at:

   http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=504

I would like to thank Stepan Kafka for excellent data to reproduce the problem.
I feel quite bad that it took me over a month to return to the problem after
he provided the test data.   I suspect this is related to some of the other
problems with raster tile indexes people have been reporting.

Best regards,

-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent