r.prominence - GRASS GIS manual

Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

NAME

r.prominence - Calculates Llobera's prominence index

KEYWORDS

SYNOPSIS

r.prominence

r.prominence --help

r.prominence [-algrq] input=name output=name radius=integer [--help] [--verbose] [--quiet] [--ui]

Flags:

-a: Calculate absolute differences
-l: Local data normalisation
-g: Global data normalisation
-r: Use quadratic neighbourhood
-q: Disable on-screen progress display
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

input=name [required]: FP raster map for which to calculate index
output=name [required]: FP raster to store output
radius=integer [required]: Radius of neighbourhood in map cells

DESCRIPTION
EXAMPLE
AUTHOR

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 elev_lid792_1m within a given neighborhood The radius is specified in number of map rows/columns.

EXAMPLE

North Carolina sample region:

g.region raster=elev_lid792_1m

# get region rows/columns
g.region -g

# calculate prominence (radius of 50 map rows)
r.prominence input=elev_lid792_1m output=prominence radius=50

# visualize over shaded DEM
r.relief input=elev_lid792_1m output=elev_lid792_1m_shaded

d.mon wx0
d.shade shade=elev_lid792_1m_shaded color=prominence

AUTHOR

Benjamin Ducke (benjamin.ducke - oxfordarch.co.uk)
Update to GRASS GIS 7: Markus Neteler - mundialis

SOURCE CODE

Available at: r.prominence source code (history)

Latest change: Wed Feb 1 10:50:58 2023 in commit: 8f28746c7c7d9dcd49ff2e5eec947ff0b7826b54