[OpenLayers-Users] Draw US Counties really slow in IE

Doug Kunzman dkunzman at usgs.gov
Wed May 30 17:43:35 PDT 2012


I'm trying to draw using open layers a collection of polygons and 
multipolygons that I retrieve using JSON that represent the US county 
boundaries. 
I've used a smoothing algorithm to reduce the number of points by about 
80% when using IE. 
It displays in under a minute using Firefox.  It takes about 6 minutes to 
display in IE. 

I've created a refresh strategy and set the update interval to 0.  So I 
shouldn't update the layer unless I've just added the polygons. 
Which I draw using redraw.

I have everything in the same projection. 

I've used a javascript and haven't discovered anything unusual. 


Does anyone else have any other suggestions?

Doug

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