[gdal-dev] Error in GDALWarp to NWT_GRD

[Even Rouault]

Le mercredi 13 juillet 2016 15:41:36, jramm a écrit :
> jramm wrote
> 
> > gdalwarp -of NWT_GRD -ot Float32 -t_srs EPSG:4326 test.tif test.grd
> > 
> > very quickly returns
> 
> Sorry this meant to read:
> 
> very quickly returns:
> 
> 0ERROR 1: /home/jamesramm/test.grd, band 1: IReadBlock failed at X offset
> 0, Y offset 0
> ERROR 1: GetBlockRef failed at X block offset 0, Y block offset 0

I don't manage to reproduce. Might perhaps depend on the dimensions of the 
input dataset and/or cache size used

That said, it is not inconsistant that some code tries to read blocks on the 
newly created dataset. Probably that the Create() method should use 
VSIFTruncateL() to set the file to the full size if filling with zeroes is OK 
for the format. Otherwise you may need to pad with more appropriate values. 
That way potential IReadBlock() won't error out.

> 
> 
> 
> 
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