[Qgis-developer] Rotated and Upsidedown Rasters

[Frank Warmerdam]

Frank Warmerdam wrote:
> Actually, as I think about it, another alternative used by some other
> software packages (ie. Cadcorp SIS) is to create a GDAL "warped VRT"
> in memory that will take care of resampling on the fly within GDAL.
> 
> That's quite an interesting angle.  I think I'll pursue that angle!

Folks,

In fact, I have ripped out my old code, and gone this way.  It should
work fine with any GDAL from 1.3.0 on, and it now in the raster
transparency branch.  The approach also supports georefeenced display
of images with ground control points instead of a geotransform.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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and watch the world go round - Rush    | President OSGeo, http://osgeo.org