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r.what.color: Queries colors for a raster map layer.


r.what.color - Queries colors for a raster map layer.




r.what.color r.what.color help r.what.color [-i] input=string [value=float[,float,...]] [format=string] [--verbose] [--quiet] Flags: -i Read values from stdin --verbose Verbose module output --quiet Quiet module output Parameters: input=string Name of existing raster map to query colors value=float[,float,...] Values to query colors for format=string Output format (printf-style) Default: %d:%d:%d
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)"'


Glynn Clements Full index (C) 2003-2010 GRASS Development Team R.WHAT.COLOR(1)

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