Donald, You should add <transparent>true</transparent> to your source getmap params, so that mapserver returns transparent images. Note that you'll have to purge your existing mapcache caches so the tiles get regenerated with transparency.
regards, thomas On 20 November 2013 01:03, Brown, Donald <[email protected]> wrote: > I am having trouble getting rid of the white background (I'd like it to be > transparent) where there is supposed to be 'no data' for the following > service: > http://mrdata.usgs.gov/mapcache/kml/[email protected] > > I tried modifying my mapcache.xml file to say 'mixed' for the format, then > built the tiles using the command: > mapcache_seed -c /mnt/mrt/mapcache/mapcache.xml -t prgeol -g WGS84 -M 8,8 > > However, this did not seem to work. Any help would be greatly appreciated. > Here is a snippet of my mapcache.xml file: > > <?xml version="1.0" encoding="UTF-8"?> > <mapcache> > <metadata> > <title>MRData mapcache service</title> > <abstract>Contains various services for MRData maps</abstract> > </metadata> > > <cache name="disk" type="disk"> > <base>/mnt/mrt/mapcache</base> > <symlink_blank/> > </cache> > > <format name="PNGQ_FAST" type="PNG"> > <compression>fast</compression> > <colors>256</colors> > </format> > > <format name="jpeg" type="JPEG"> > <quality>75</quality> > <photometric>RGB</photometric> > </format> > > <format name="mixed" type="MIXED"> > <opaque>jpeg</opaque> > <transparent>PNGQ_FAST</transparent> > </format> > > <source name="prgeol" type="wms"> > <getmap> > <params> > <FORMAT>image/png</FORMAT> > <MAP_IMAGETYPE>png</MAP_IMAGETYPE> > <LAYERS>geol,fault,faultn</LAYERS> > <MAP>/mnt/mrt/map-files/pr.map</MAP> > </params> > </getmap> > <http> > <url>http://mrdata.usgs.gov/cgi-bin/mapserv</url> > </http> > </source> > <tileset name="prgeol"> > <source>prgeol</source> > <cache>disk</cache> > <grid>WGS84</grid> > <grid>g</grid> > <grid>GoogleMapsCompatible</grid> > <format>mixed</format> > <metatile>5 5</metatile> > <expires>86400</expires> > </tileset> > > > Thanks! > > > -- > Don Brown > GIS Specialist > Cherokee Services Group, LLC (CSG) > Contractor to the U.S. Geological Survey > Fort Collins Science Center > 2150 Centre Ave. Bldg. C > Fort Collins, CO 80526 > (970) 226-9155 > [email protected] > > _______________________________________________ > mapserver-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapserver-users _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
