POWER Brendan wrote:
I have installed ms4w on a windows box with GDAL, etc... From here I created a sample map (mapfile below) sourcing data from ecw images. When I use the WMS service via an intranet, I get a full colour image through the GetMap &LAYER command, however, when using ArcMap, I only get a 256 colour image. Is there something I am doing wrong? Any assistance would be appreciated.
Brendan, It may be that ArcMap picks a different format to fetch. You might check the logs to see what FORMAT= option ArcMap is using. I think there are "standard outputformats" still offered even when you declare your own output format(s) (though I'm not sure about that).
NAME TestMap STATUS ON SIZE 640 480 EXTENT 116 -24 120 -22 UNITS METERS SHAPEPATH "d:\Zone_50" IMAGETYPE FCADIType OUTPUTFORMAT NAME FCADIType DRIVER "GDAL/jpeg" MIMETYPE "image/jpeg" IMAGEMODE RGB EXTENSION "jpg" FORMATOPTION "INTERLACE=OFF" FORMATOPTION "QUALITY=100" FORMATOPTION "OUTPUT_TYPE=RASTER" END
Note that JPEG with QUALITY=100 is substantially larger than with QUALITY=95, but is not measurably better quality. The libjpeg docs discourage use of QUALITY over 95. I recently corrected the GDAL docs to address this, and to clarify that QUALITY=100 is *not* lossless. What is OUTPUT_TYPE=RASTER supposed to do? Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [EMAIL PROTECTED] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | President OSGeo, http://osgeo.org
