Changes between Version 4 and Version 5 of SomeSplitting

Timestamp:

Mar 7, 2013, 3:40:11 PM (11 years ago)

Author:

darkblueb

Comment:

—

SomeSplitting

@@ -54 +54 @@
 strk:  recipe goes through topology, of course  :-)
 
+dbb: I think this is a practical addition
 
+== Methods ==
+
+strk:  with postgis topology you could convert to a TopoGeometry, then take its envelope and add a bisecting edge if the number of vertices in it are above your threshold, then re-do the same on each part of the now-splitted thing until every composing face is below N vertices
+
+nhv: that should work
+
+strk:  will take forever, but it'd be a robot working... I've been actually doing "vector tiles" like that in the past.(but without support of the PostGIS Topology)
+
+dbb:  there is nothing like this in JTS now ? as a function ?
+
+strk:  there's both triangulation and topology in postgis, not a single function, you'd have to write that one, on your needs. I think plpgsql could do, it really depends on your need for speed
+strk:  ST_SplitByGrid()   ST_SplitToMaxN()
+
+
+