AW: [Mapserver-users] execute two querys at the same time

[Jan Hartmann]

That's a nice MapServer application, Nicole! I see now why you need two 
different query colors. If you could use PostGIS it wouldn't be too 
hard. You can write wonderful routing applications with PostGIS. For 
standalone MapServer it looks a bit heavy to me. Can't you do something 
with scripted CLASS and COLOR expressions? (map_layer_class_expression / 
map_layer_class_color, see the MapServer CGI reference at the bottom: 
http://mapserver.gis.umn.edu/doc36/cgi-reference.html)  You can fill 
these variables from the URL or form.

I guess more people on the list are working on transportation problems; 
perhaps they have other solutions. The city of Cologne will provide a 
free ticket to the Zoo for the best one.

Jan


Nicole Bömeke wrote:
> Hello Jan,
> 
> I don't know wich selection will be needed befor someone sends a request.
> I'm using the mapserver to display the route from a starting point to an
> ending point specified in the request. All combinations of points in my
> layer are valid - that makes 365816 different possibilities for the
> selection.
> Therefor I use a query to mark the selection.
> 
> See: http://www.stadtinfokoeln.de Bus & Bahn - Fahplanauskunft KVB
> 
> (specify a station i.e. "Köln - Zoo" to "Köln - Hauptbahnhof" and choose
> "Karte")
> 
> Now I want to mark each part of the route in a different color depending
> on the means of transport (bus, train, car, ...) to be used.
> 
> Nicole
> 
> ------------------------------------
> Nicole Bömeke
> Ingenieurgruppe IVV
> Oppenhoffallee 171
> 52066 Aachen
> Tel.: 0241-94691-76
> Fax: 0241-531622
> e-mail: bon at ivv-aachen.de
> http://www.ivv-aachen.de
> 
> 
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: mapserver-users-admin at lists.gis.umn.edu
> [mailto:mapserver-users-admin at lists.gis.umn.edu]Im Auftrag von Jan
> Hartmann
> Gesendet: Montag, 5. Mai 2003 15:58
> An: mapserver-users at lists.gis.umn.edu
> Betreff: Re: [Mapserver-users] execute two querys at the same time
> 
> 
> Nicole,
> 
> Aren't you making it very difficult for yourself? If you just want to
> display assorted selections with different colors, you can use CLASS
> expressions within layers. To display selections from several layers,
> you can define classes for each layer and display all layers
> transparently (see OUTPUTFORMAT). Queries are only needed when you want
> to process additional data from the selected items. Templates for these
> can be provided at CLASS and LAYER level.
> 
> Jan
> 
> 
> Nicole Bömeke wrote:
> 
>>Hello list,
>>
>>is it possible to execute two or more querys
>>over different layers at the same time
>>and mark the query results in different colors?
>>
>>If yes, how can I define more than one qlayer?
>>And where can I determin the hilite color
>>for the query result of each layer?
>>
>>To execute a query I'm using the following code:
>>
>>template file:
>>------------------
>>
>><input type="hidden" name="mode"            value="itemnquery">
>><input type="hidden" name="mapext"          value="shapes">
>><input type="hidden" name="qlayer"          value="rqF">
>><input type="hidden" name="map_rqF_filter"
>>value="/0000156946|0000156957|0000156955|0000156956/">
>>
>>mapfile:
>>-----------
>>
>>  QUERYMAP
>>    STATUS ON
>>    STYLE HILITE
>>    COLOR 255 0 255
>>  END
>>
>> LAYER
>>    NAME "rqF"
>>    DATA "gesamt_fgo"
>>    STATUS OFF
>>    TYPE LINE
>>    FILTERITEM "sStrNr"
>>    FILTER "%map_rqF_filter%"
>>    CLASS
>>      NAME "rqF"
>>      SYMBOL "circle"
>>      SIZE 6
>>      TEMPLATE "empty.html"
>>    END
>>    FOOTER "rrt_query_mode.html"
>>  END
>>
>>Nicole
>>
>>_______________________________________________
>>Mapserver-users mailing list
>>Mapserver-users at lists.gis.umn.edu
>>http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>
> 
> 
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