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NAME
r.prominence - Calculates Llobera's prominence index
KEYWORDS
SYNOPSIS
r.prominence
r.prominence help
r.prominence [-algrq] input=name output=name radius=integer [--verbose] [--quiet]
Flags:
- -a
- Calculate absolute differences
- -l
- Local data normalisation
- -g
- Global data normalisation
- -r
- Use quadratic neighbourhood
- -q
- Disable on-screen progress display
- --verbose
- Verbose module output
- --quiet
- Quiet module output
Parameters:
- input=name
- FP raster map for which to calculate index
- output=name
- FP raster to store output
- radius=integer
- Radius of neighbourhood in map cells
DESCRIPTION
r.prominence calculates the average difference between a
central cell and its neighbors. It approximated the terrain 'ruggedness'
by looking at average differences in elevation within a given neighborhood
The radius is specified in number of map rows/columns.
EXAMPLE
Spearfish region:
g.region rast=elevation.10m
# get region rows/columns
g.region -g
# calculate prominence (radius of 500 map rows)
r.prominence in=elevation.10m out=prominence radius=500
# visualize over shaded DEM
r.shaded.relief elevation.10m
d.mon x0
d.his i=elevation.10m.shade h=prominence
AUTHOR
Benjamin Ducke (benjamin.ducke - oxfordarch.co.uk)
Last changed: $Date: 2009-11-21 08:08:47 -0800 (Sat, 21 Nov 2009) $
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