[Mapserver-users] Zoom to location by string match in query on SHP files.

[Jason M. Nielsen]

Quoting Richard Greenwood <rich at greenwoodmap.com>:

> Jason M. Nielsen wrote:
> > Is there a way to perform a query on shape files for a string match then
> return
> > that record and extract specific data about it?
> > 
> > Example:
> > 
> > I have a shape file of all roads in an area. Among other attributes all of
> these
> > roads have a name and vertex coordinates. I would like to be able to enter
> a
> > street name, find it in the shape file then zoom to say the first X,Y
> point
> > starting that road.
> > 
> > This would probably be very easy using PostGIS and php but unforunately
> as
> > things stand these are not available to me atm. All I have is the cgi
> mapserver
> > and shape files. They want to keep shape files as the datasource as well
> due to
> > some other issues.
> 
> The CGI itemquery and itemnquery modes may be what you are looking for, 
> however they will zoom to the full extent of the feature, not the first 
> vertex. You could, however, have a second layer with just the verticies, 
> zoom to them and also display the road polyline. Here is an example:
> 
>    http://www2.tetonwyo.org/mapserver/mapserv.exe?
>     qstring=438&
>     mode=itemquery&
>     qitem=id&
>     map=tc/tc.map&
>     mapext=shapes&
>     qlayer=Road_CLq&layer=Roads&
>     zoomsize=2&
>     savequery=true&
> 
> Regards,
> -- 
> Richard Greenwood
> www.greenwoodmap.com
> 

Very cool. Ill look into this asap. Zooming to the full feature is fine as far
as I know.

Thanks for info!