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   r.what.color outputs the color associated with user-specified category
   values in a raster input map.

   Values may be specified either using the values= option, or by
   specifying the -i flag and passing the values on stdin, one per line.

   For each value which is specified, a line of output will be generated
   consisting of the category value followed by the color, e.g.:

r.what.color input=elevation.dem value=1500
1500: 223:127:31

   If the input map is an integer (CELL) map, the category will be written
   as an integer (no decimal point), otherwise it will be written in
   floating point format (printf("%f") format).

   If the lookup fails for a value, the color will be output as an
   asterisk, e.g.:

r.what.color input=elevation.dem value=9999
9999: *

   If a value cannot be parsed, both the value and the color will be
   output as an asterisk, e.g.:

r.what.color input=elevation.dem value=bogus
*: *

   The format can be changed using the format= option. The value should be
   a printf()-style format string containing three conversion specifiers
   for the red, green and blue values respectively, e.g.:

r.what.color input=elevation.dem value=1500 format='%02x:%02x:%02x'
1500: df:7f:1f

   If your system supports the %m$ syntax, you can change the ordering of
   the components, e.g.:

r.what.color input=elevation.dem value=1500 format='%3$02x:%2$02x:%1$02x'
1500: 1f:7f:df

   Common formats:
     * Tcl/Tk: format="#%02x%02x%02x"
     * WxPython: format='"#%02x%02x%02x"' or format='"(%d,%d,%d)"'

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   [1]r.what

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   Glynn Clements

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References

   1. file://localhost/root/tmp/2/fin/r.what.html