NAME¶
r.basins.fill - Generates watershed subbasins raster map.
KEYWORDS¶
raster, hydrology
SYNOPSIS¶
r.basins.fill
r.basins.fill help
r.basins.fill c_map=
name t_map=
name
result=
name number=
integer [--
overwrite]
[--
verbose] [--
quiet]
Flags:¶
- --overwrite
-
Allow output files to overwrite existing files
- --verbose
-
Verbose module output
- --quiet
-
Quiet module output
Parameters:¶
- c_map=name
-
Name of input coded stream network raster map
- t_map=name
-
Name of input thinned ridge network raster map
- result=name
-
Name for output raster map
- number=integer
-
Number of passes through the dataset
DESCRIPTION¶
r.basins.fill generates a raster map layer depicting subbasins, based on
input raster map layers for the coded stream network (where each channel
segment has been "coded" with a unique category value) and for the
ridges within a given watershed. The raster map layer depicting ridges should
include the ridge which defines the perimeter of the watershed. The coded
stream network can be generated as part of the
r.watershed program, but
the map layer of ridges will need to be created by hand (for example, through
digitizing done in
v.digit).
The resulting output raster map layer will code the subbasins with category
values matching those of the channel segments passing through them. A
user-supplied number of passes through the data is made in an attempt to fill
in these subbasins. If the resulting map layer from this program appears to
have holes within a subbasin, the program should be rerun with a higher number
of passes.
NOTES¶
The current geographic region setting is ignored. Instead, the geographic region
for the entire input stream's map layer is used.
SEE ALSO¶
See Appendix A of the
GRASS <a
href="
http://grass.osgeo.org/gdp/raster/r.watershed.ps">Tutorial:
r.watershed for further details on the combined use of
r.basins.fill
and
r.watershed.
r.watershed,
v.digit
AUTHORS¶
Dale White, Dept. of Geography, Pennsylvania State University
Larry Band, Dept. of Geography, University of Toronto, Canada
Last changed: $Date: 2010-09-16 09:25:59 +0200 (Thu, 16 Sep 2010) $
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