2008/12/22 Joshua Hevenor <[email protected]>: > Good morning list, > I'm looking for a function and/or method to clip a polygon. In general, I > need to limit a polygon to the map boundary for export (export as shapefile > from a web map)...so if I had a 20x20 square that was overlapping > the visible map by 10 units, the exported result would be a 10x20 > rectangle. PHP MapScript is my weapon of choice. I'd also welcome opinions > on the approach or suggestions for alternatives. > > Thanks for your assistance, > > Josh > > PS. Sorry for the re-post...forgot the subject
I don't know how to make this using only PHP, but combining with postgis, you can clip geometries using something like: SELECT intersection(the_Geom, <box3d>) FROM <table> WHERE the_Geom && <box3d>; Saludos José María _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
