[mapserver-users] Query "Unique Values" in Mapfile?

[Tamas Szekeres]

I'm not aware of any support for this in MapServer, however by using
MapScript you could create script to iterate the features and add new
classes to a layer on each unique combination. Then you could save the
mapfile for further editing if required.

Best regards,

Tamas



2009/4/6 Stefan Schwarzer <stefan.schwarzer at grid.unep.ch>

> Hi there,
>
> is it possible to make mapserver directly detect the "unique values" in a
> field of the dbf table? I have twenty or more point and polygon shapefiles,
> each having a column with specific thematic data, such as the "protected
> area category". But the content of these columns is different. So, defining
> these classes by hand would consume much time; and defining them dynamically
> via PHP & SQL, then writing a bit of the mapfile code before launching the
> whole thing looks a little bit complicated for a relative basic request.
>
> Thanks for any hints,
>
> Stef
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