Maybe I misunderstood the question, is it not what raster class
expressions are for?
https://mapserver.org/input/raster.html#classifying-rasters
CLASS
NAME "red -> blue"
EXPRESSION ([red] = 255 AND [green] = 0 AND [blue] = 0)
STYLE
COLOR 0 0 255
END
END
On 2021-09-16 12:46, Steve Lime wrote:
Hi all: I think this is possible. What's the easiest/best way to recolor
a raster image, so for example, turning all pixels of 255 0 0 to 0 0
255? There are only 6 colors in the input image I need to deal with.
--Steve
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--
Daniel Morissette
Mapgears Inc
T: +1 418-696-5056 #201
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