Bob,
There is no code to do what you are expecting. Basically, COLOR is used
for vector objects that do not have the ability to specify a color in
most cases. Raster data implicitly defines a color by virtue of the
pixel values. I fyou don't like the color of the raster that you have
you have to reclassify it. You can do it in mapserver at a significant
cost to performance or you can do it with GDAL or other tools once so
mapserver does not have to fiddle with every pixel.
In theory, there is no reason that mapserver couldn't do what you want,
but it has to be coded and there are a bunch of cases would have to be
resolved from a use case point of view, like how to deal with other
other kinds of rasters with multiple bands, etc.
-Steve W
On 3/5/2013 3:18 PM, Bistrais, Bob wrote:
Yes, I had looked at that webpage and thought I was doing it correctly.
My TIFF is a single band, 8-bit, with no colormap. Still don’t see why
it won’t display in color.
*From:*Brent Fraser [mailto:[email protected]]
*Sent:* Tuesday, March 05, 2013 3:13 PM
*To:* Bistrais, Bob
*Cc:* [email protected]
*Subject:* Re: [mapserver-users] Trouble coloring a raster
Bob,
I'd recommend just re-rendering the raster off-line for performance
reasons, but if data management makes that difficult have a look at the
"Classifying Rasters" section of
http://www.mapserver.org/input/raster.html#how-are-rasters-added-to-a-map-file.
And Mapserver can only classify a single 8-bit band (grey or paletted),
even if your image is say 3 band RGB.
Best Regards,
Brent Fraser
On 3/5/2013 12:53 PM, Bistrais, Bob wrote:
I have a geotiff raster which represents forested lands. I’d like
it to display in green. I put in a Style section and specified a
color, but try as I might, it always displays in grayscale. It is
an 8-bit unsigned TIFF file.
Below is the layer specification:
LAYER
NAME "ForestLands"
GROUP "ForestLands"
TYPE RASTER
STATUS on
DATA "/mapserver_data/StreamBarriers/forestland06.tif"
METADATA
"wms_srs" "EPSG:4326 EPSG:26919 EPSG:26983
EPSG:26984 EPSG:102113"
"wms_name" "ForestLands"
"wms_server_version" "1.1.1"
"wms_format" "image/png"
END
CLASS
NAME "Forest"
STYLE
COLOR 0 250 0
END
END
END
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