This is the command r.modegrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
r.mode - Finds the mode of values in a cover map within areas assigned the same category
value in a user-specified base map.
KEYWORDS
raster, statistics, algebra
SYNOPSIS
r.mode
r.mode --help
r.mode base=string cover=string output=string [--overwrite] [--help] [--verbose]
[--quiet] [--ui]
Flags:
--overwrite
Allow output files to overwrite existing files
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:
base=string [required]
Base map to be reclassified
cover=string [required]
Coverage map
output=string [required]
Output map
DESCRIPTION
r.mode calculates the most frequently occurring value (i. e., mode) of data contained in a
cover raster map layer for areas assigned the same category value in the user-specified
base raster map layer. These modes are stored in the new output map layer.
The output map is actually a reclass of the base map.
The base parameter defines an existing raster map layer in the user’s current mapset
search path. For each group of cells assigned the same category value in the base map, the
mode of the values assigned these cells in the cover map will be computed.
The cover parameter defines an existing raster map layer containing the values to be used
to compute the mode within each category of the base map.
NOTES
The user should use the results of r.mode with care. Since this utility assigns a value
to each cell which is based on global information (i.e., information at spatial locations
other than just the location of the cell itself), the resultant map layer is only valid if
the geographic region and mask settings are the same as they were at the time that the
result map was created.
Results are affected by the current region settings and mask.
EXAMPLE
Mode of K-factor (erosion) for Spearfish fields:
g.region raster=fields -p
r.mode base=fields cover=soils.Kfactor output=K.by.farm.mode
r.univar K.by.farm.mode
Use r.modegrass online using onworks.net services