Hi,
I guess this discussion, and past similar ones, calls for an
enhancement. A new API function, like CPLErr
GDALRasterInterpolateAtPoint(GDALRasterBandH, double dfPixel, double
dfLocation, GDALRIOResampleAlg eInterpolation, double *pdfValue), that
could be used by a new mode of gdallocationinfo. The
GDALRPCGetDEMHeight() function in alg/gdal_rpc.cpp is a plausible
candidate implementation for bilinear and bicubic (we could potentially
restrict to that at the moment).
Even
Le 24/04/2024 à 10:33, Javier Jimenez Shaw via gdal-dev a écrit :
Hi
I would like to read in QGIS or GDAL an interpolated value in a DSM
(well, actually it is a geoid model, but it is the same behaviour).
See that I do not want the pixel value, but the linear interpolation
among the neighbour pixels, assuming that the pixel value is in the
center of the pixel.
For instance, this file
https://www.isgeoid.polimi.it/Geoid/Asia/Japan/japan2000_g.html
Is there any way to get it (without implementing the interpolation
myself)?
If I understood correctly gdallocationinfo is not interpolating, just
giving the pixel value.
Thanks
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