Hi Steve, If I provide Mapserver with a point x,y in WGS84 projection (from google maps) as a query, can mapserver give me the enclosing polygon information (using point-in-polygon method or something else)? If yes, how? I have already drawn the polygons on google map using tile mode. Can you suggest me a book/doc that helps with querying mapserver?
Thanks, Varun On Sun, May 3, 2009 at 9:56 AM, Steve Lime <[email protected]> wrote: > Both examples show how to do this. You have to create a query using > the coordinate from Google to access MapServer. My example uses the > principle to query points but would work for polygons (which are actually > easier). You could issue straight MapServer queries: > > http://.../cgi-bin/mapserv?mode=query&map=something.map&mapxy=google_x+google_y&qlayer=the_polygons > > or do a WFS query. Since you're already using straight MapServer the former > would probably be easiest. > > Steve > >>>> Varun saraf <[email protected]> 05/02/09 1:34 PM >>> > Hi, > > Thanks a lot Jim and Steve. These are great examples but I am dividing > each state of USA into about 1300 polygons and I need a way to find > which polygon is selected by the user. I tried building Gpolygons > using the polygon data that i have (after converting it into a GML > file) but it makes Google damn slow to redraw the polygons on zoom in > and zoom out. The tile mode in mapserver is much faster. > > Now, After I draw the polygon in tile mode using mapserver, Is there a > way Mapserver can return to me the specific polygon info (say > co-ordinates or any other data in the dbf file relating to that > polygon) when I select it on google map? Goggle I believe can give me > the exact co-ordinates of the point I clicked. Can mapserver use this > point location to find which polygon was selected? > > Thanks, > Varun > > 2009/5/2 Jim Strevinas <[email protected]>: >> A beautiful example that uses the Google Maps API is: >> >> http://www.dyasdesigns.com/geoxml/gmlusa.htm >> >> It makes use of an API plugin called geoxml that can load XML data which can >> be produced by >> a WFS server. In the source code, a static GML file is used but a google >> search shows that it can >> connect to a live WFS server using the URL. >> >>> Date: Sat, 2 May 2009 09:28:01 -0500 >>> From: [email protected] >>> To: [email protected] >>> Subject: Re: [mapserver-users] Re: Dynamic data loading using Google maps >>> andMapserver >>> CC: [email protected] >>> >>> One way to do that is to construct MapServer queries based on the event >>> and submit them using AJAX. This site does just that but with OpenLayers: >>> >>> http://www.dnr.state.mn.us/waters/csg/index_copy.html >>> >>> Click on the dots and a MapServer query is done behind the scenes. If >>> successful >>> a little window control is populated, if not, then nothing happens. Simple >>> templates >>> are used to present the information. >>> >>> Steve >>> >>> >>> Varun saraf <[email protected]> 05/01/09 11:54 AM >>> >>> Hi, >>> >>> I just had a look at ImageMap Template on "Output generation"...Can >>> this be used on google maps to get information pooped up on a >>> mouseover or mouseclick in tile mode? If not, what is it that I can do >>> to get a similar result when using Mapserver with google maps? >>> >>> Regards, >>> Varun >>> >>> On Thu, Apr 30, 2009 at 6:30 PM, Varun saraf <[email protected]> wrote: >>> > Hi, >>> > >>> > I have successfully drawn layers on of google maps as base using >>> > mapserver. However, I am trying to figure out how to get data >>> > dynamically displayed on the web page when a user clicks on a certain >>> > area. For example, I have divided the entire state of virginia into >>> > many sectors (using a polygon shp file). My requirement is that I want >>> > data to come up on the map/web page when the user selects a particular >>> > sector. I know google provides me with an event api for clicking on >>> > the map but how do I pass this event to mapserver so it can send me >>> > the label for that sector from the shape file? I need to be able to >>> > recognize what sector the user has clicked. Is this possible using >>> > just the mapserv cgi script and a map file or a MapScript has to be >>> > written/used? Can someone point me in the right direction here? Even >>> > providing the link for a previous discussion on this topic would help. >>> > >>> > Thanks, >>> > Varun >>> > >>> _______________________________________________ >>> mapserver-users mailing list >>> [email protected] >>> http://lists.osgeo.org/mailman/listinfo/mapserver-users >>> >>> _______________________________________________ >>> mapserver-users mailing list >>> [email protected] >>> http://lists.osgeo.org/mailman/listinfo/mapserver-users >> >> ________________________________ >> Invite your mail contacts to join your friends list with Windows Live >> Spaces. It's easy! Try it! >> _______________________________________________ >> mapserver-users mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/mapserver-users >> >> > _______________________________________________ > mapserver-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapserver-users > > _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
