
NAME
r.stream.preview.py - Create a preview for a threshold value given the flow accumulation map
KEYWORDS
raster
SYNOPSIS
r.stream.preview.py
r.stream.preview.py help
r.stream.preview.py acc=flow accumulation th=threshold [--verbose] [--quiet]
Parameters:
- acc=flow accumulation
- Name of flow accumulation raster map
- th=threshold
- threshold (integer)
DESCRIPTION
r.stream.preview Creates a preview of stream extraction for a threshold value
and a given flow accumulation map.
NOTES
In order to find a value of upslope area to be used as input to extract the
river network using r.stream.extract or r.watershed, it is common to proceed
by attempts. This tool is useful for quickly display results for various
attempts of threshold values.
EXAMPLE
r.stream.preview acc=accumulation_map th=value
SEE ALSO
r.stream.extract,
r.watershed
AUTHOR
Margherita Di Leo (dileomargherita AT gmail DOT com)
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© 2003-2013 GRASS Development Team