1r.basins.fill(1) Grass User's Manual r.basins.fill(1)
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6 r.basins.fill - Generates a raster map layer showing watershed sub‐
7 basins.
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10 raster
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13 r.basins.fill
14 r.basins.fill help
15 r.basins.fill number=integer c_map=string t_map=string result=string
16 [--overwrite] [--verbose] [--quiet]
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18 Flags:
19 --overwrite
20 Allow output files to overwrite existing files
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22 --verbose
23 Verbose module output
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25 --quiet
26 Quiet module output
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28 Parameters:
29 number=integer
30 Number of passes through the dataset
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32 c_map=string
33 Coded stream network file name
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35 t_map=string
36 Thinned ridge network file name
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38 result=string
39 Name for the resultant watershed partition file
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42 r.basins.fill generates a raster map layer depicting subbasins, based
43 on input raster map layers for the coded stream network (where each
44 channel segment has been "coded" with a unique category value) and for
45 the ridges within a given watershed. The raster map layer depicting
46 ridges should include the ridge which defines the perimeter of the
47 watershed. The coded stream network can be generated as part of the
48 r.watershed program, but the map layer of ridges will need to be cre‐
49 ated by hand (for example, through digitizing done in v.digit).
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51 The resulting output raster map layer will code the subbasins with cat‐
52 egory values matching those of the channel segments passing through
53 them. A user-supplied number of passes through the data is made in an
54 attempt to fill in these subbasins. If the resulting map layer from
55 this program appears to have holes within a subbasin, the program
56 should be rerun with a higher number of passes.
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59 The current geographic region setting is ignored. Instead, the geo‐
60 graphic region for the entire input stream's map layer is used.
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63 See Appendix A of the GRASS <a
64 href="http://grass.itc.it/gdp/raster/r.watershed.ps">Tutorial: r.water‐
65 shed for further details on the combined use of r.basins.fill and
66 r.watershed.
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68 r.watershed, v.digit
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71 Dale White, Dept. of Geography, Pennsylvania State University
72 Larry Band, Dept. of Geography, University of Toronto, Canada
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74 Last changed: $Date: 2008-01-25 19:42:36 +0100 (Fri, 25 Jan 2008) $
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76 Full index
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78 © 2003-2008 GRASS Development Team
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82GRASS 6.3.0 r.basins.fill(1)