After extensive re-engineering, r.flow is available for testing by the
GRASS community.
r.flow generates flowlines using a combined raster-vector
approach from an input elevation raster map elevin, and
optionally an input aspect raster map aspin and/or an input
barrier raster map barin. There are three possible output
maps which can be produced in any combination
simultaneously: a vector file flout of flowlines, a raster
map lgout of flowpath lengths, and a raster map dsout of
flowline densities.
Among the improvements to the program are great savings in execution time,
the ability to handle virtually any size file, internal aspect computation,
three-dimensional lengths if desired, better diagnostic output, and minor
geometric corrections. Find this program at
ftp://moon.cecer.army.mil/grass/incoming/r.flow.tar.Z
A man page is included. Install the program using the command
gmake4.1
or the man page with
gmake4.1 . man
or both with
gmake4.1 . all
Enjoy!
------------------------+-------------------------------------------------
caplan@cs.uiuc.edu | Joshua Caplan
| Department of Computer Science
| University of Illinois at Urbana-Champaign
&
j-caplan@cecer.army.mil | USACERL, Visualization Group
------------------------+-------------------------------------------------