1r.basins.fill(1)              Grass User's Manual             r.basins.fill(1)
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NAME

6       r.basins.fill   -  Generates  a raster map layer showing watershed sub‐
7       basins.
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KEYWORDS

10       raster
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SYNOPSIS

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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DESCRIPTION

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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NOTES

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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SEE ALSO

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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AUTHORS

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)
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