[gdal-dev] gdal raster calc - a modulo operator (%)?

[Laurențiu Nicola]

Hi,

GDAL also supports https://github.com/ArashPartow/exprtk (which is available in the -full Docker image), which has a % operator, but I've never used it.

Laurentiu

On Tue, Oct 7, 2025, at 19:30, Scott via gdal-dev wrote:
> Greetings!
>
> I've been unable to find a modulo operator in CLI calc. It's not in the 
> muparser functions or appear to be in the forth-coming 3.12 C pixel 
> functions.
>
> This has been working with muparser, but it's messy every time you need 
> a simple modulo. pixel is real or int, div is int:
>
> rint(pixel) - (rint(rint(pixel) / div) * div)
>
> Am I missing something? If not, consider this a feature request! :)
>
> Thanks!
> Scott
>
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