centering on the result of itemquery

[Didrik Pinte]

Le samedi 01 avril 2006 à 18:26 +0200, Didrik Pinte a écrit :
> Hi,
> 
> i'm using the CGI interface to mapserver. I'm trying to get in one call
> a map centered on the result of a ITEMQUERY request.
> 
> How is this possible ?
> 
> Here is the working query i'm using at the moment :
> 
> http://loclhost/cgi-bin/mapserv?map=/var/www/mapserver/csmap.map&mode=itemquery&layers=filling&scale=400000&mapxy=374974+1816035&mapsize=500+300&qlayer=selection&qstring=clientid%20=%20'T6_3137'&qitem=clientid
> 
> Working fine but not centering on the result and displaying empty if the
> searched point is outside of the visible bounding box.
> 
> Many thanks in advance for your help.
> 
> Didrik

Here is the answer ;-)

adding MAPEXT=shapes to the query centers the query on the selected
shapes. The SCALE must be defined in order to do the extent computation.

! The searched map file must have all the searchable points in its
extent. Points outside of the extent cannot be searched. Is this a
normal behaviour ?

So the correct query string is the following :

http://localhost/cgi-bin/mapserv?map=/var/www/mapserver/csmap.map&mode=itemquery&layers=filling&mapsize=500+300&qlayer=selection&qstring=clientid%20=%20'T8_7185'&qitem=clientid&mapext=shapes&scale=400000


Didrik

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