[gdal-dev] Reading interpolated values on DSM

[Rahkonen Jukka]

Hi,

How about making a VRT file with doubled pixel size by applying your favourite resampling method and then making a query from the VRT file with gdallocationinfo?

-Jukka Rahkonen-

Lähettäjä: gdal-dev <gdal-dev-bounces at lists.osgeo.org> Puolesta Javier Jimenez Shaw via gdal-dev
Lähetetty: keskiviikko 24. huhtikuuta 2024 11.33
Vastaanottaja: gdal dev <gdal-dev at lists.osgeo.org>
Aihe: [gdal-dev] Reading interpolated values on DSM

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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