Merge pull request #5 from geographika/transparency

Set TRANSPARENT option in PNG output format

Author: geographika

itasca.map

@@ -64,6 +64,16 @@ MAP
     FORMATOPTION "STORAGE=memory"
   END
 
+  OUTPUTFORMAT
+    NAME "png"
+    DRIVER AGG/PNG
+    MIMETYPE "image/png"
+    IMAGEMODE RGB
+    EXTENSION "png"
+    FORMATOPTION "GAMMA=0.75"
+    TRANSPARENT TRUE
+  END
+
   #
   # Start of web interface definition (including WMS enabling metadata)
   #