Thank you very much Florin! This code is very useful, is not exactly what I needs but gives me orientation about how to implement my mapfile.
2008/5/14 Florin A. <[EMAIL PROTECTED]>: > Hi, > > In your mapfile you define the layers and the colors. See example below. > > If you have an SRID (projection) for the layer use it. You can see > what it is by selecting this sql in pgadmin: "select srid(the_geom) > from cities) . Use the number you get here in the mapserver layer > definition and in the projection definition as well. If you loaded > the cities with shp2pgsql then you should automatically have a gid > field on the cities table. And your cities table should have a > population field the type of which should be some kind of number. > > > LAYER > METADATA > "wms_title" "Cities layer" > END > NAME "cities" > TRANSPARENCY 100 > CONNECTIONTYPE postgis > CONNECTION "host=??? user=??? dbname=??? password='???'" > DATA "the_geom from cities using srid=??? USING UNIQUE gid" > TYPE POLYGON > > CLASS > NAME "Small cities" > EXPRESSION ( [population] <50000) > COLOR 0 255 0 > END > > CLASS > NAME "Medium cities" > EXPRESSION ([population] >50000 AND [population] <1500000 ) > COLOR 255 255 0 > END > > CLASS > NAME "Big cities" > EXPRESSION ([population] > 1500000 ) > COLOR 255 0 0 > END > > > END > > Hope this helps, > Florin > -- Emilio
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