[mapserver-users] Customized layer for Mapserver/Kamap
Emilio Ponce
yosoycore at gmail.com
Thu May 15 05:16:25 PDT 2008
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. <pianosnake at gmail.com>:
> 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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