Rif: Re: point data searching

[aborruso at spaziogis.it]

Dear all,
where [shpmidx] [shpmidy] functions is documented in mapserver site? Which
are their functions?
Thank you,

Andrea




                                                                                                            
                    "Stephen Lime"                                                                          
                    <steve.lime at dnr.state.mn.us>         Per:    <mapserver-users at lists.gis.umn.edu>,       
                    Inviato da:                          <nwerneck at yahoo.com.br>                            
                    owner-mapserver-users at lists.g        Cc:                                                
                    is.umn.edu                           Oggetto:     Re: point data searching              
                                                                                                            
                                                                                                            
                    07/11/2000 20.15                                                                        
                                                                                                            
                                                                                                            



Just centering is easy. In you're query template you might have something
like:

<!-- the image -->
<img src="/cgi-bin/mapserv?map=[map]&mapxy=[shpmidx]+[shpmidy]
&scale=250000[get_layers]&mode=map">

  or

<img src="/cgi-bin/mapserv?map=[map]&mapxy=[shpmidx]+[shpmidy]
&buffer=5000[get_layers]&mode=map">

The values for buffer and scale could easily be passed in from the same
form the user picked
the city. Just use the pass through feature of templates. I do this all the
time. BTW [get_layers]
just adds currently selected layers (i.e. &layer=layer1&layer=layer2) to
the end. You may or may not
need it.

Steve

Stephen Lime
Internet Applications Analyst

Minnesota DNR
500 Lafayette Road
St. Paul, MN 55155
651-297-2937

>>> <nwerneck at yahoo.com.br> 11/07/00 01:52AM >>>
> Do you really need to draw the city some special way or do you just need
> it centered on the city with everything drawn as normal?
           Just center the city in the map... Is it possible? Can I specify

the scale of the new map?
           It would be nice to tell, for example: "Show me the Myztplikz
city, at THAT
scale" or "... and everything at THAT distance from it"
           It looks like this already exists for mapxy queries...
           Can I specify some coordinated pair (outside any shapefile), and
tell
mapserv to show me the map centered at that point? Or must I
calculate the mapext?

           ???

 -- Nicolau

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