I had my mapfile extent changed and it worked "Perfect". Thanks a lot Steve. It was a great help!
On Tue, Jun 2, 2009 at 4:16 PM, Varun saraf <vsaraf....@gmail.com> wrote: > Thanks a lot Steve. I am able to use the itemquery to fetch the other > attributes correctly but somehow, the center of polygon isn't working > right. Its returning to me, the co-ordinates that are outside the > bounds of the mapping application. All my data is in the actual > geographic co-ordinate system followed by Google maps and it returns a > latitude/longitude pair corresponsing to some place in Antarctica. Any > idea on what might be wrong? > > On Tue, Jun 2, 2009 at 1:50 PM, Steve Lime <steve.l...@dnr.state.mn.us> wrote: >> Yes, you'd need to create a template for that. You could return JSON, XML, >> csv or whatever. This would >> be the most straightfoward using 5.2 or ideally 5.4.1 (due out today) and >> the new style templates. You >> could create a template output format to use like so: >> >> OUTPUTFORMAT >> NAME 'geom_center' >> DRIVER 'TEMPLATE' >> MIMETYPE 'text/plain' >> FORMATOPTION 'FILE=geom_center.tmpl' >> END >> >> where geom_center.tmpl might look like: >> >> <!-- MapServer Template --> >> [shpmidx],[shpmidy] >> >> and your query would look like: >> >> http://.../cgi-bin/mapserv?map=foo.map&...itemquery >> stuff...&qformat=geom_center >> >> Steve >> >>>>> On 6/2/2009 at 12:17 PM, in message >> <6db14d250906021017kb56f49ak36b4d0e4be417...@mail.gmail.com>, Varun saraf >> <vsaraf....@gmail.com> wrote: >>> Center of the geometry works perfect. I need to get access to any >>> point inside the polygon feature. I believe I can use an itemQuery on >>> mapserver to query the attribute but how does mapserver return the >>> center point? Do I need to create an HTML template for that too? >>> >>> On Mon, Jun 1, 2009 at 4:11 PM, Steve Lime <steve.l...@dnr.state.mn.us> >>> wrote: >>>> MapServer templates can produce a center point for a geometry but it's not >>>> a >>> true centroid but those >>>> aren't guaranteed to be "in" the polygon. MapScript could be used as well I >>> suppose. In either case you'd >>>> send a lookup request to the CGI or MapScript, do an attribute query and >>> return whatever you'd need. >>>> >>>> Steve >>>> >>>>>>> On 5/29/2009 at 9:32 AM, in message >>>> <6db14d250905290732pb01747wce200eddfe73d...@mail.gmail.com>, Varun saraf >>>> <vsaraf....@gmail.com> wrote: >>>>> I am using mapserver 5.0 with google maps and the data source is the >>>>> US Census tracts as shape files and dbf files. >>>>> >>>>> On Thu, May 28, 2009 at 2:12 PM, Steve Lime <steve.l...@dnr.state.mn.us> >>>>> wrote: >>>>>> What version are you using? What data source? >>>>>> >>>>>> Steve >>>>>> >>>>>>>>> On 5/28/2009 at 10:01 AM, in message >>>>>> <6db14d250905280801q3660a6a7ycbcd5f5a238c5...@mail.gmail.com>, Varun >>>>>> saraf >>>>>> <vsaraf....@gmail.com> wrote: >>>>>>> Hi, >>>>>>> >>>>>>> I know mapserver uses a point-in-polygon method to find a feature >>>>>>> given a set of co-ordinates, but can it do the same thing reversed? >>>>>>> For example. Each polygon I draw has a number associated with it which >>>>>>> is in a "dbf" file with the same name as the "shp" file that mapserver >>>>>>> uses to draw the polygons. My current map file allows me to fetch that >>>>>>> unique number whenever I pass the co-ordinates of any point inside >>>>>>> that polygon (mapserver uses the point-in-polygon method to fetch me >>>>>>> the polygonID). The query I use is >>>>>>> >>>>>>> http://127.0.0.1:8123/cgi-bin/mapserv.exe?&map=C:/ms4w/apps/workshop-5.0/testMa >>>>>>> p.map&mode=query&mapxy=-77.098617 >>>>>>> 38.87795 >>>>>>> >>>>>>> where mapxy keeps changing based on the user's click. The html >>>>>>> template I send just has the variable name [polygonID] which helps me >>>>>>> get the polygon ID of the point I specify in the mapxy variable. Now, >>>>>>> is there a way in which I can send this polygonID to mapserver and get >>>>>>> hold of any point (perhaps the centroid) inside of this polygon? Can >>>>>>> someone point me in the right direction here? >>>>>>> >>>>>>> Thanks a lot. >>>>>>> >>>>>>> -Varun >>>>>>> _______________________________________________ >>>>>>> mapserver-users mailing list >>>>>>> mapserver-users@lists.osgeo.org >>>>>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users >>>>>> >>>>>> >>>>> _______________________________________________ >>>>> mapserver-users mailing list >>>>> mapserver-users@lists.osgeo.org >>>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users >>>> >>>> >>> _______________________________________________ >>> mapserver-users mailing list >>> mapserver-users@lists.osgeo.org >>> http://lists.osgeo.org/mailman/listinfo/mapserver-users >> >> > _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users