[gdal-dev] Converting DEM height values from feet to meter

Evert Etienne (SITEMARK) evert.etienne at sitemark.com
Thu Mar 18 09:06:16 PDT 2021


Does one of the 2 options keep more settings of the input file? Such as NoData value, BIGTIFF creation option…?

But indeed, the possibility to use VRT does seem better since then it can be done during tiling. This probably only saves space and not time, correct (due to lack of understanding of VRT).

Thanks for replying!

> On 18 Mar 2021, at 12:38, Even Rouault <even.rouault at spatialys.com> wrote:
> 
> "gdal_translate -scale 0 1 0 factor in out" could also be used. As a bonus point, this works with VRT as an output if you don't want to materialize the intermediate file.
> 
> Even
> 
> Le 18/03/2021 à 12:20, Evert Etienne (SITEMARK) a écrit :
>> For reference, I decided to go for a simple gdal_calc with `f"--calc=A*{factor}”`
>> 
>>> On 12 Mar 2021, at 20:43, Evert Etienne (SITEMARK) <evert.etienne at sitemark.com> wrote:
>>> 
>>> Hello all,
>>> 
>>> I was wondering what the best or recommended way was to convert the vertical unit of a DEM/DSM. I am able to use gdal_translate, gdal_calc.py, GDAL python bindings or rasterio. I will afterwards be tiling using gdal2tiles.
>>> Any pointers would be appreciated.
>>> 
>>> Greetings
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