[Cartoweb-users] passing variables to MapServer (for filtering)

[Gustavo Concheiro]

Hi all!

Question from a total newbie :)  How can I do what I used to do with plain MapServer CGI: to pass, as a variable, a user selection, that can then be replaced by MapServer (or PostGIS) as a filter expression.

I just cannot figure this out!


Also: can I still try groups as layers?  I have several layers, and I used the on and off at different scales.  I hid this complexity from the user, who just had to select the group (e.g. hydrography).  How can I do this.  

If there is RTFM for any of this, please feel free to just point out WHERE it is discussed.


TIA.

Best, Gustavo

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Gustavo A. Concheiro Pérez
Smithsonian Tropical Research Institute, Panamá