Provided by: grass-doc_7.8.2-1build3_all 

Topic: null data
r.null Manages NULL-values of given raster map. r3.null Explicitly create the 3D NULL-value bitmap file. See also the corresponding keyword null data for additional references. Main index | Topics index | Keywords index | Graphical index | Full index © 2003-2019 GRASS Development Team, GRASS GIS 7.8.2 Reference Manual