I'm sure , I'm only connecting to a Postgis database.
uDig is especially fast when panning or zooming only a bit, and when the zoom level is high.
In my viewer it takes the same time when rendering the first time, or after a slight zoom in, and it takes the same time to render the full map or a small part of it.
Mauricio Mantilla
On 5/10/06, Jesse Eichar <[EMAIL PROTECTED]> wrote:
Hi,uDig uses Streaming renderer in the way that David has outlined, are you sure that the performance you are talking about was when connected to a PostGIS? Because uDig uses a different and optimized renderer for shapefiles which is dramatically faster than streaming renderer (exactly because it is optimized for shapefiles).JesseOn 10-May-06, at 3:20 PM, Mauricio Mantilla wrote:Thank you David,
I did what you told me and it improved a bit, but it's still far from uDig rendering speed
Any other suggestions?
Mauricio MantillaOn 5/10/06, David Blasby < [EMAIL PROTECTED]> wrote: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
