[Qgis-developer] applying styles to virtual rasters

[Peter Ersts]

Paolo,

I cannot think of any reason off the top of my head why there would be a 
difference, so submit it as a bug if you have not already. It may just 
be a double comparison problem in the transparency class as the data 
come out of gdal as floats -- I recently fixed a similar issue with the 
no-data values in the histogram display.

Also if you could, can you provide a little more detail on your virtual 
raster? Or feel free to just send me the .vrt file off list if you like.

-pete

Paolo Cavallini wrote:
> Hi all.
> If I load a virtual raster (BW, TIFF) and I apply full transparency to value 0 (to remove collars),
> the areas=0 remain white. If I do the same to individual TIFFs, the correctly become transparent: a
> bug, or a limitation of the VRT format?
> Thanks.
>   


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Peter J. Ersts, Software Developer
American Museum of Natural History
Center for Biodiversity and Conservation
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Web: http://biodiversityinformatics.amnh.org
Web: http://cbc.amnh.org

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