[GRASS-git] [OSGeo/grass] 7aab4c: Add MCC to r.kappa (#2680)

[Māris Nartišs]

  Branch: refs/heads/main
  Home:   https://github.com/OSGeo/grass
  Commit: 7aab4cc1b7c32d579fd973527fc709696baf8df8
      https://github.com/OSGeo/grass/commit/7aab4cc1b7c32d579fd973527fc709696baf8df8
  Author: Māris Nartišs <maris.gis at gmail.com>
  Date:   2023-02-14 (Tue, 14 Feb 2023)

  Changed paths:
    M raster/r.kappa/calc_metrics.c
    M raster/r.kappa/kappa.h
    M raster/r.kappa/print_json.c
    M raster/r.kappa/print_kappa.c
    M raster/r.kappa/r.kappa.html
    M raster/r.kappa/testsuite/test_r_kappa.py

  Log Message:
  -----------
  Add MCC to r.kappa (#2680)

* Report Matthews (Mattheus) Correlation Coefficient as one of measures
* Use the Neumaier's Kahan-Babuska algorithm to minimize errors during summation