GDAL registers its own isnan function with muparser (along with isnodata and fmod).
What do you mean by "OR and AND are not correct" ? Dan On Sat, Oct 25, 2025 at 11:26 AM Momtchil Momtchev via gdal-dev < [email protected]> wrote: > Alas, muparser NaN behaviour is not perfect. There is no isNaN support > at all and OR and AND are not correct. I don't know what is his > background - seems to be astro/space/aviation and definitely not Earth > sciences. I wonder if the best solution wouldn't be to contribute this > directly to muparser? > > On 24/10/2025 19:17, Even Rouault wrote: > > Please file an enhancement ticket about that, especially if you've an > > API in mind > > > > Le 24/10/2025 à 18:55, Momtchil Momtchev via gdal-dev a écrit : > >> Hello, > >> > >> I think that you should probably add a way to process (and produce) > >> NoData (NaN) values to the RasterBand algebra. > >> > -- > Momtchil Momtchev <[email protected]> > > _______________________________________________ > gdal-dev mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/gdal-dev >
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