Re: [Geotools-gt2-users] Slow rendering of GridCoverage objects

[Andrea A. <aa...@op...>]

Steve.Ansari ha scritto:
> Hello all,
> 
> I'm using StreamingRenderer to draw a MapContext with the 2.3.0 release, 
> however it is VERY slow when drawing a GridCoverage layer.  I've 
> isolated the problem to:
> 
>             graphics.drawRenderedImage(finalImage, cloneFinalWorldToGrid);
> 
> in GridCoverageRenderer ( 
> http://svn.geotools.org/geotools/trunk/gt/modules/library/render/src/main/java/org/geotools/renderer/lite/gridcoverage2d/GridCoverageRenderer.java 
> )
> 
> My GridCoverage is 800x800 and the drawing time is around 1 minute.

Are you creating the map layer with Reader or a Coverage? If you're 
reading from disk, always add a reader.
Let me know if this helped
Cheers
Andrea