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man page of r.quant

r.quant: Produces the quantization file for a floating-point map.

r.quant - Produces the quantization file for a floating-point map.


r.quant r.quant help r.quant [-tr] [basemap=string] input=string[,string,...] fprange=dmin,dmax range=min,max [--verbose] [--quiet] Flags: -t Truncate floating point data -r Round floating point data --verbose Verbose module output --quiet Quiet module output Parameters: basemap=string Base map to take quant rules from Default: NONE input=string[,string,...] Raster map(s) to be quantized fprange=dmin,dmax Floating point range: dmin,dmax Default: range=min,max Integer range: min,max Default: 1,255


r.quant produces the quantization file for a floating-point map. The map parameter defines the map for which the rules are to be created. If more than one map is specified, then this implies that the floating-point range is the miniumum and maximum of all the maps together, unless either basemap=map or fprange=min,max is specified. Quant rules The quant rules have to be entered interactively. If rules is specified, the input has the form: value1:value2:cat1:[cat2] where value1 and value2 are floating point values and cat1 cand cat2 are integers. If cat2 is missing, it is taken to be equal to cat1. All values can be "*" which means infinity.


It is an error for both basemap and fprange to be specified.


r.support, r.null
Michael Shapiro, Olga Waupotitsch, U.S.Army Construction Engineering Research Laboratory Last changed: $Date: 2010-02-28 02:56:22 +0100 (Sun, 28 Feb 2010) $ Full index (C) 2003-2010 GRASS Development Team R.QUANT(1)

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