Even Rouault <even.rouault <at> mines-paris.org> writes:
> - cheat a bit and create a white image that you add as the first position in
> your VRT.
>
> This can be a single pixel image that you artifically expand to full VRT size,
> like this :
>
> <SrcRect xOff="0" yOff="0" xSize="1" ySize="1"/>
> <DstRect xOff="0" yOff="0" xSize="replace_by_vrt_x_size"
> ySize="replace_by_vrt_y_size"/>
This was the ultimate guru solution - simple, extremely fast and totally
undocumented.
I made an one pixel sized image "onepixel.tif" as you suggested and placed the
following SimpleSource as the first source for each band
<SimpleSource>
<SourceFilename relativeToVRT="1">onepixel.tif</SourceFilename>
<SourceBand>1</SourceBand>
<SrcRect xOff="0" yOff="0" xSize="1" ySize="1" />
<DstRect xOff="0" yOff="0" xSize="2000" ySize="2000" />
</SimpleSource>
Knowing tricks is fun but I could tolerate having some parameter driven way for
setting the VRT background colour.
-Jukka Rahkonen-
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