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<div class="moz-cite-prefix">Bob,<br>
<br>
As Jeff indicates, you need an EXPRESSION in your CLASS,
something like:<br>
<br>
EXPRESSION ([pixel] > 100)<br>
<br>
The EXPRESSION has a look at each of the image's pixel values (and
that's why it's slow)<br>
<br>
<pre class="moz-signature" cols="72">Best Regards,
Brent Fraser</pre>
On 3/5/2013 1:18 PM, Bistrais, Bob wrote:<br>
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<p class="MsoNormal"><span style="color:#1F497D">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">
Brent Fraser [<a class="moz-txt-link-freetext" href="mailto:bfraser@geoanalytic.com">mailto:bfraser@geoanalytic.com</a>]
<br>
<b>Sent:</b> Tuesday, March 05, 2013 3:13 PM<br>
<b>To:</b> Bistrais, Bob<br>
<b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
<b>Subject:</b> Re: [mapserver-users] Trouble coloring a
raster<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Bob,<br>
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
<a moz-do-not-send="true"
href="http://www.mapserver.org/input/raster.html#how-are-rasters-added-to-a-map-file">http://www.mapserver.org/input/raster.html#how-are-rasters-added-to-a-map-file</a>.
And Mapserver can only classify a single 8-bit band (grey
or paletted), even if your image is say 3 band RGB.<br>
<br>
<o:p></o:p></p>
<pre>Best Regards,<o:p></o:p></pre>
<pre>Brent Fraser<o:p></o:p></pre>
<p class="MsoNormal">On 3/5/2013 12:53 PM, Bistrais, Bob
wrote:<o:p></o:p></p>
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<p class="MsoNormal">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.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Below is the layer specification:<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">LAYER<o:p></o:p></p>
<p class="MsoNormal"> NAME "ForestLands"<o:p></o:p></p>
<p class="MsoNormal"> GROUP "ForestLands"<o:p></o:p></p>
<p class="MsoNormal"> TYPE RASTER<o:p></o:p></p>
<p class="MsoNormal"> STATUS on<o:p></o:p></p>
<p class="MsoNormal"> DATA
"/mapserver_data/StreamBarriers/forestland06.tif"<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> METADATA<o:p></o:p></p>
<p class="MsoNormal"> "wms_srs"
"EPSG:4326 EPSG:26919 EPSG:26983 EPSG:26984 EPSG:102113"<o:p></o:p></p>
<p class="MsoNormal">
"wms_name" "ForestLands"<o:p></o:p></p>
<p class="MsoNormal"> "wms_server_version" "1.1.1"<o:p></o:p></p>
<p class="MsoNormal"> "wms_format" "image/png"<o:p></o:p></p>
<p class="MsoNormal"> END<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> CLASS<o:p></o:p></p>
<p class="MsoNormal"> NAME "Forest"<o:p></o:p></p>
<p class="MsoNormal"> STYLE<o:p></o:p></p>
<p class="MsoNormal"> COLOR 0 250 0<o:p></o:p></p>
<p class="MsoNormal"> END<o:p></o:p></p>
<p class="MsoNormal"> END<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">END<o:p></o:p></p>
<p class="MsoNormal"><span
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Roman","serif""><br>
<br>
<br>
<o:p></o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>mapserver-users mailing list<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="http://lists.osgeo.org/mailman/listinfo/mapserver-users">http://lists.osgeo.org/mailman/listinfo/mapserver-users</a><o:p></o:p></pre>
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<p class="MsoNormal"><span
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