<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div dir="ltr" data-setdir="false">Hello GDAL-experts,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">normally when I use GDAL for reprojecting imagery, the projection information that I use is the source spatial reference (SRS) associated with the imagery. However, now I have imagery which is lat/lon geographic and I have two separate bands which also carry the pixel geographic information. So the following raster inputs all the same size:</div><div dir="ltr" data-setdir="false">1. Band 1 = latitude</div><div dir="ltr" data-setdir="false">2. Band 2 = longitude</div><div dir="ltr" data-setdir="false">3. Band 3 = imagery</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">The question I have is how best to integrate this information into a reprojection workflow?</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I presume that gdalwarp is the best option here, but how can I take advantage of the individual pixel location information (rather than just the extents for example)? I know that I can mosaic into an existing file that I have already created in the target projection. Is this the best way to apply gdalwarp in this context?</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I'm just wondering what is the best way to integrate the lat/lon pixel information into my warping using gdalwarp.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Thanks in advance for your help,</div><div dir="ltr" data-setdir="false">Conrad<br></div></div></body></html>