Hi Māris, all, On Wed, Nov 15, 2023 at 8:35 AM Maris Nartiss via grass-dev <grass-dev@lists.osgeo.org> wrote: > > Hello devs, > Just playing around I decided to run i.cca module. Seems that it has > been broken since 2009(!) (there is a bug report from 2014 in Trac > [1]). I managed to fix the segfault [2] but it left me with a > different problem – the module runs just fine but produces NULLs as an > output. This boils down to at one point trying to calculate sqrt from > negative numbers. I am not that familiar with the CCA algorithm > implemented in the module and thus have no idea if it is a bug in the > code or just bad input data. > > I hope somebody can help me to sort this out or provide a working example, > Māris.
Digging in my inbox I found this thread from 2009: https://lists.osgeo.org/pipermail/grass-dev/2009-August/045656.html It contains some discussion and examples. Maybe not much of a help but a kind of pointer. Markus > 1. https://trac.osgeo.org/grass/ticket/2297 > 2. https://github.com/OSGeo/grass/pull/3239 > _______________________________________________ > grass-dev mailing list > grass-dev@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/grass-dev -- Markus Neteler, PhD https://www.mundialis.de - free data with free software https://grass.osgeo.org https://neteler.org/blog _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-dev