Hello,
The troubles of ArcGridReader to render properly ASCII ArcGrid File come
from the way it get the nodata value from the ascii file. I believe that the
actual "no data" value (for instance) is never used in the resulting
GridCoverage. It would be a good idea to review the code to settle that once
for all.

Moreover, the RasterSymblolizerSupport need also an improvement. That class
seem  knowing nothing about org.geotools.styling.ColorMap. It is using a
java.util.Map as ColorMap instead of the one provided in the Style. So The
ColorMap in RasterSymbolizer does not affect  layers styling  just because
the StreamingRenderer is using this RasterSymbolizerSupport via
GridCoverageRenderer.
Best Regards.
Côme LINSOUSSI.







Jody Garnett wrote:
> 
> Alessio Fabiani wrote:
>> Hi Gabriella,
>> Simone is almost finishing a brand new RasterSymbolizer much more 
>> powerful than the actual implementation. It will allow you to assign 
>> colors to your custom categories, select color bands and more 
>> funcitonalities.
>> So if you can wait some more few days, you can play with it very soon. 
>> For any further information on the RasterSymbolizer, at this time 
>> Simone is the best person who ask, I guess.
> I did not know that work was going on ... is their any overlap with the 
> categorization work done by Cory for Feature data? The concept of 
> categories is represented there and used to generate SLD files.
> I also wonder if this is just a new RasterSymbolizer implementation - or 
> if the SLD standard is consulted at all?
> 
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