r.cats - Prints category values and labels associated with user-specified raster map layers.

r.cats

r.cats help

r.cats map=string [vals=value[,value,...]] [cats=range[,range,...]] [fs=character|space|tab]

Parameters:

r.cats prints the category values and labels for the raster map layer specified by map=name to standard output.

The user can specify all needed parameters on the command line, and run the program non-interactively. If the user does not specify any categories (e.g., using the optional cats=range[,range,...] argument), then all the category values and labels for the named raster map layer that occur in the map are printed. The entire map is read, using r.describe, to determine which categories occur in the map. If a listing of categories is specified, then the labels for those categories only are printed. The cats may be specified as single category values, or as ranges of values. The user may also (optionally) specify that a field separator other than a space or tab be used to separate the category value from its corresponding category label in the output, by using the fs=character|space|tab option (see example below). If no field separator is specified by the user, a tab is used to separate these fields in the output, by default.

The output is sent to standard output in the form of one category per line, with the category value first on the line, then an ASCII TAB character (or whatever single character or space is specified using the fs parameter), then the label for the category.

"

10:Dumps, mine, Cc

20:Kyle clay, KaA

Any ASCII TAB characters which may be in the label are replaced by spaces.

The output from r.cats can be redirected into a file, or piped into another program.

UNIX Manual entries for awk and sort

r.coin, r.describe, d.what.rast, r.support

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

Last changed: $Date: 2003/05/06 12:40:55 $

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