r.spread(1grass) on Linux
The text 17e272d44bc0, as Debian 13 (Trixie) shipped it. The page shows this text now.
Simulates elliptically anisotropic spread. Generates a raster map of the cumulative time of spread, given raster maps containing the rates of spread (ROS), the ROS directions and the spread origins. It optionally produces raster maps to contain backlink UTM coordinates for tracing spread paths. Usable for fire spread simulations.