Hi, Warning: SVG2 was created in 2.11, and in version 2.12 SVG2 was classified as deprecated. SVG2 cause some behavioral problems in some browsers.
Fabrizio wrote > 2012/11/18 Sergeant_york < > electronicpanda@ > > > >> Codes seems okay to me. The only thing that can cause performance issue >> could >> be transforming from 4326 to map projection but after initializing >> geometries it shouldn't affect the performance. >> >> In my opinion, you can: >> >> 1- Try to change renderers to get best performance. >> > > as said in the openlayers 2.11 release notes I put the following line > before any Vector and > it is way more fast dragging which was one of my targets, so really good > point. > > OpenLayers.Layer.Vector.prototype.renderers = ["SVG2", "VML", "Canvas"]; > > > >> 2- Simplify geometries with respect to zoom levels. >> > > > Is there a method to simplify geometries automatically? > > >> 3- Try to keep fill opacity to 0 and stroke opacity to 1 (should be >> tested) >> > > It does not change performances > > >> 4- Draw only the place inside the bounding box >> > > what do you mean , I should reduce the bbox? > > >> >> These are the things which I can say, but unfortunately with many >> vertexes >> openlayers (even in chrome) gives a bit bad performance. So don't expect >> to >> get results like desktop applications. >> > > > Yes, it is still very slow loading the vertexes.... I'm thinking about > reducing the polygon vertexes, do you know any algorithm or any way to > simplify polygons? > > thanks > > > -- > Fab > > http://twitter.com/fabrizioburatta > > http://www.linkedin.com/in/fburatta > > http://nonfartiprenderedalpanico.blogspot.com/ > > _______________________________________________ > Users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/openlayers-users -- View this message in context: http://osgeo-org.1560.n6.nabble.com/very-slow-map-using-WKT-Multipolygon-with-a-lot-of-Points-tp5017181p5017492.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/openlayers-users
