Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
r.reclass.area(1)	    GRASS GIS User's Manual	     r.reclass.area(1)

NAME
       r.reclass.area	-  Reclasses  a	 raster	 map greater or	less than user
       specified area size (in hectares).

KEYWORDS
       raster, statistics, aggregation

SYNOPSIS
       r.reclass.area
       r.reclass.area --help
       r.reclass.area [-cd]  input=name	 output=name  value=float  mode=string
       [method=string]	   [--overwrite]    [--help]   [--verbose]   [--quiet]
       [--ui]

   Flags:
       -c
	   Input map is	clumped

       -d
	   Clumps including diagonal neighbors

       --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:
       input=nameA [required]
	   Name	of input raster	map

       output=nameA [required]
	   Name	for output raster map

       value=floatA [required]
	   Value option	that sets the area size	limit (in hectares)

       mode=stringA [required]
	   Lesser or greater than specified value
	   Options: lesser, greater

       method=string
	   Method used for reclassification
	   Options: reclass, rmarea
	   Default: reclass

DESCRIPTION
       r.reclass.area reclasses	a raster map greater or	less than a user spec-
       ified area size (in hectares).

       If  the	-c  flag  is  used, r.reclass.area will	skip the creation of a
       clumped raster and assume that the input	raster is already clumped.

EXAMPLES
       In this example,	the ZIP	code map in the	North Carolina sample  dataset
       location	 is  filtered for large	areas (removing	smaller	areas from the
       map).
       g.region	raster=zipcodes	-p
       r.report	zipcodes unit=h
       Extract only areas greater than 2000 ha,	NULL otherwise:
       r.reclass.area input=zipcodes output=zipcodes_larger2000ha mode=greater value=2000
       r.report	zipcodes_larger2000ha unit=h
       Figure: r.reclass.area method=reclass In	this example, the ZIP code map
       in  the	North Carolina sample dataset location is filtered for smaller
       areas which are substituted with	the value of the  respective  adjacent
       area  with  largest shared boundary. Reclass by substitutional removing
       of areas	minor of 1000 ha:
       r.reclass.area input=zipcodes output=zipcodes_minor1000ha mode=lesser value=1000	method=rmarea
       Figure: r.reclass.area method=rmarea

SEE ALSO
	r.reclass, r.clump, r.stats

AUTHORS
       NRCS,
       Markus Neteler

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

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

       A(C) 2003-2020 GRASS Development	Team, GRASS GIS	7.8.5 Reference	Manual

GRASS 7.8.5						     r.reclass.area(1)

NAME | KEYWORDS | SYNOPSIS | DESCRIPTION | EXAMPLES | SEE ALSO | AUTHORS | SOURCE CODE

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=r.reclass.area&sektion=1&manpath=FreeBSD+13.0-RELEASE+and+Ports>

home | help