[gdal-dev] Re-aligning maps from grid north to true north

[Smart, Gary]

We have tif maps which are OSGB grid aligned, but we need them aligned
to true-north.  I presume this could be achieved by gdalwarp.  Can
anyone give me a clue how to do this?  Am I right in thinking that
simply setting the correct s_srs and t_srs would achieve everything I
need?  If so - what part of the WKT would relate to Grid vs True?

 

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