NAME¶

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

KEYWORDS¶

raster, querying

SYNOPSIS¶

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

DESCRIPTION¶

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("%.15g") 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:

SEE ALSO¶

r.what

AUTHOR¶

Glynn Clements Full index © 2003-2014 GRASS Development Team