Hi Mike,thanks for the prompt. Looking into it, the data are DEM corrected
latitude/longitude. A GDAL info shows it as a regular raster band: Band 1
Block=4865x1 Type=Int32, ColorInterp=Gray
How can I take advantage of VRT? That sounds like a great potential
solution.ThanksConrad
On Friday, October 18, 2024 at 12:01:27 PM GMT+1, Michael Sumner
<mdsum...@gmail.com> wrote:
Check if gdalinfo sees the longitude and latitude as geolocation arrays, then
just warp to grid you want.
If they aren't auto identified this can be arranged with VRT.
Cheers, Mike
On Fri, 18 Oct 2024, 21:55 Conrad Bielski via gdal-dev,
<gdal-dev@lists.osgeo.org> wrote:
Hi Javier,
it is not a grid. So each raster pixel is assigned the geolocation. Yes - if I
was to extract it, that's what it could be considered.
Conrad
On Friday, October 18, 2024 at 11:37:28 AM GMT+1, Javier Jimenez Shaw
<j...@jimenezshaw.com> wrote:
Is it an actual grid? in the meaning of having constant step size in X and
Y.In that case the geolocation is just the corner and the x and y sizes. You
can convert to a georeference raster, and warp it.
If it is not the case, you have something more like a 2D pointcloud, or a bunch
of poins in a strange vector format.
On Fri, 18 Oct 2024 at 12:20, Conrad Bielski via gdal-dev
<gdal-dev@lists.osgeo.org> wrote:
Hello GDAL-experts,
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:1. Band 1 = latitude2. Band 2 = longitude3.
Band 3 = imagery
The question I have is how best to integrate this information into a
reprojection workflow?
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?
I'm just wondering what is the best way to integrate the lat/lon pixel
information into my warping using gdalwarp.
Thanks in advance for your help,Conrad
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