[gdal-dev] VRTWarpedDataset with ChunkandWarpImage

[Even Rouault]

Le lundi 27 octobre 2014 22:42:11, David Olson a écrit :
> Hi,
>   I've set up a c++ code which creates a VRTWarpedDataset from a source
> image then uses ChunkAndWarpImage to warp additional source images and
> create a mosaic with the VRTWarpedDataset destination (hdst_ds).
>  The code is tested and runs fine without memory leak.
>  However I do get an error upon calling GDALClose(hdst_ds) :
>       *ERROR 6: WriteBlock() not supported for this dataset*.
>  GDALClose calls FlushCache which calls WriteBlock.
>  Just wanting to get some insight on this error. And possibly how to avoid
> it.

David,

Difficult to tell without a reproducable snippet. But my guess is that you have 
an issue with setting up alpha band. Perhaps you have not defined nDstAlphaBand 
in the warping options ?

Even

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