[gdal-dev] AutoCreateWarpedVRT changes Int16 raster to Int32

[Even Rouault]

What is the gdalinfo output on dem.tif ?


> Is this a bug? It appears that the data type change might be 
> influenced by the nodata value.
Yes, there is some logic to take the "union" of the largest data types 
involved in the warping (but it should probably ignore nodata values 
that are outside of the validity range of the input data type. I didn't 
check what it does currently)
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