You can set Opacity at the layer level. Here is the relevant part of the documentation: http://mapserver.org/mapfile/layer.html#opacity
From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of rishi Sent: Thursday, March 05, 2015 12:38 AM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] mapserver mapfile for transparancy hi all i want to set transparency for colored polygons iam displaying a polygon layer on the google image and i want to set transparency so that background image has to visible in the colored polygons i have attached my map also my mapfile is MAP EXTENT 8240841.450745 2400319.900386 9218007.463612 3107183.406947 IMAGETYPE png size 150 500 TRANSPARENT on LEGEND STATUS EMBED POSITION LR TRANSPARENT TRUE END web metadata wms_srs "EPSG:4326 EPSG:900913" end end LAYER CONNECTIONTYPE postgis CONNECTION "user=postgres password=****** dbname=mpdb host=localhost port=5432" DATA "geom FROM view_villagevidyut using unique village_code_c11" STATUS Default TYPE polygon labelitem "villname" CLASSITEM "process" CLASS NAME "completed" EXPRESSION "completed" STYLE COLOR 0 255 0 outlinecolor 121 188 255 END LABEL SIZE 2 color 121 188 255 END END CLASS NAME "uncompleted" EXPRESSION "uncompleted" STYLE COLOR 135 206 235 outlinecolor 121 188 255 END END CLASS NAME "plan not covered" EXPRESSION "" STYLE COLOR 240 128 128 outlinecolor 121 188 255 END LABEL SIZE 2 color 121 188 255 END END PROJECTION "init=epsg:900913" END end END
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