Mauricio Mantilla wrote:
Hi all,
I created a mapviewer using StreamingRenderer and data from a Postgis
database.
I based my code for the rendering on this example:
http://www.geotools.org/display/GEOTOOLS/How+to+create+a+custom+MapLayer+--+jdk+1.5+geotools+2.1.M4
When I run the project and everytime I zoom or pan it takes too long to
render the map. I also have uDig and I noticed it takes almost no time to
render the same data. I think uDig also uses StreamingRenderer.
How can I improve the rendering speed to make more like uDig??
Thanks
I havent looked at what you're doing, but the common mistakes are:
1. you have to set a few params in the datastore:
param.put("wkb enabled","true");
param.put("loose bbox","true");
2. you have to set this for the renderer:
Map rendererParams = new HashMap();
rendererParams.put("optimizedDataLoadingEnabled",new
Boolean(true) );
renderer.setRendererHints(rendererParams);
dave
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