Re: [mapserver-users] Point in polygon
Thanks Steve, I trying with MySWL Spatial extension. Steve Lime wrote: I know if you were in PostGIS you could do a spatial join of sorts. That is join each commune polygon with the points it contains (or just a count) based on an intersection operator. I don't know if that's possible with MySQL or not. You could also consider pre-processing your data if it doesn't change often. A simple MapScript script could be used like so: - for each commune geom - build a shapeObj - do a queryByShape() against the point data - store the count in the appropriate commune record You might have to pull the park data into something MapServer can query. With the count in the commune data you could easily classify on that attribute. You'd see better performance as well. Some ideas anyway. Steve truongpm truong_pham_m...@yahoo.com 09/22/09 2:13 AM Hi list, I have a problem with defined a point is in which polygon. For example, a map have 2 layer: commune-polygon; park - point. I want to layout color of polygon (each commune) depend on amount of point in this polygon. I done with query polygon from mySQL database, layout its color base on an attribute in database. My question is that how could i know which polygon that point inside??? Thanks for your attentions and sorry about my language skills. -- View this message in context: http://n2.nabble.com/Point-in-polygon-tp3690813p3690813.html Sent from the Mapserver - User mailing list archive at Nabble.com. ___ 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 -- View this message in context: http://n2.nabble.com/Point-in-polygon-tp3690813p3699021.html Sent from the Mapserver - User mailing list archive at Nabble.com. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] Point in polygon
Hi list, I have a problem with defined a point is in which polygon. For example, a map have 2 layer: commune-polygon; park - point. I want to layout color of polygon (each commune) depend on amount of point in this polygon. I done with query polygon from mySQL database, layout its color base on an attribute in database. My question is that how could i know which polygon that point inside??? Thanks for your attentions and sorry about my language skills. -- View this message in context: http://n2.nabble.com/Point-in-polygon-tp3690813p3690813.html Sent from the Mapserver - User mailing list archive at Nabble.com. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Point in polygon
I know if you were in PostGIS you could do a spatial join of sorts. That is join each commune polygon with the points it contains (or just a count) based on an intersection operator. I don't know if that's possible with MySQL or not. You could also consider pre-processing your data if it doesn't change often. A simple MapScript script could be used like so: - for each commune geom - build a shapeObj - do a queryByShape() against the point data - store the count in the appropriate commune record You might have to pull the park data into something MapServer can query. With the count in the commune data you could easily classify on that attribute. You'd see better performance as well. Some ideas anyway. Steve truongpm truong_pham_m...@yahoo.com 09/22/09 2:13 AM Hi list, I have a problem with defined a point is in which polygon. For example, a map have 2 layer: commune-polygon; park - point. I want to layout color of polygon (each commune) depend on amount of point in this polygon. I done with query polygon from mySQL database, layout its color base on an attribute in database. My question is that how could i know which polygon that point inside??? Thanks for your attentions and sorry about my language skills. -- View this message in context: http://n2.nabble.com/Point-in-polygon-tp3690813p3690813.html Sent from the Mapserver - User mailing list archive at Nabble.com. ___ 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
