Hi Even, thanks for confirming and fixing the issue.
Best Regards, Dennis On Fri, May 15, 2015 at 10:48 AM, Even Rouault <even.roua...@spatialys.com> wrote: > Dennis, > > https://www.digitalglobe.com/sites/default/files/ISD_External.pdf indeed > confirms your findings (page 37 & 38, doc of originX and ulX) > > Fixed per http://trac.osgeo.org/gdal/ticket/5961 > > Even > > > Hey guys, > > > > > > > > We have DigitalGlobe image strips which come with a *.til file. > > > > The geotransform of the til and the separate images have a shift of half > a > > pixel when opened with GDAL. > > > > The reason is that in the GDAL TIL driver the coordinates are treated as > > outer pixel edge, where as it seems like they describe the pixel center, > at > > least in our cases. > > > > Does anyone know of a description for the TIL format to verify if the > GDAL > > driver or the TILs from DigitalGlobe are wrong? > > > > For now we fixed it on our side, but you might consider changing the TIL > > driver to treat the coordinates as pixel center. > > > > > > > > Best Regards, > > > > Dennis > > > > > -- > Spatialys - Geospatial professional services > http://www.spatialys.com >
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