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r.mode(1)		    GRASS GIS User's Manual		     r.mode(1)

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=stringA [required]
	   Base	map to be reclassified

       cover=stringA [required]
	   Coverage map

       output=stringA [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 util-
       ity 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  geo-
       graphic	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

SEE ALSO
       g.region,  r.category,  r.clump,	 r.describe,   r.mapcalc,   r.mfilter,
       r.neighbors, r.reclass, r.stats,	r.statistics, r.univar

AUTHOR
       Michael Shapiro,	U.S.Army Construction Engineering Research Laboratory

SOURCE CODE
       Available at: r.mode source code	(history)

       Main  index  | Raster index | Topics index | Keywords index | Graphical
       index | Full index

       A(C) 2003-2020 GRASS Development	Team, GRASS GIS	7.8.3 Reference	Manual

GRASS 7.8.3							     r.mode(1)

NAME | KEYWORDS | SYNOPSIS | DESCRIPTION | NOTES | EXAMPLE | SEE ALSO | AUTHOR | SOURCE CODE

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