Hello, I'm using QGIS as a redistributable platform for a large GIS project that spans all of western North America. The project has 36 layers 8 of which are large raster datasets (*.img files). Some of the rasters are ~350mb each. I'm running the latest version 1.4.0-2. I am running it on a pretty powerful workstation (windows XP) and am using the osgeo4w version. My primary user is using a MacBook Pro with Leopard and is using the standalone version. He is experiencing pretty poor performance. It moves very very slowly, each operation. Even turning off/on simple layers is taking up to 45 seconds. This occurs even if there are a handful of base layers turned on.
I've seen some discussion of slow start up issues and raster rendering issues. Would JasPer effect *.img rendering? If so how can I determine if I or my MacBook user are running that? Does QGIS utilize *.rrd pyramid files generated by ArcGIS? I've also generated spatial indices for all the vector layers. Any other suggestions on how to improve performance or test for the bottle neck would be greatly appreciated. Thanks Kurt ************************** Kurt Menke, GISP Bird's Eye View <http://www.birdseyeviewgis.com/> www.BirdsEyeViewGIS.com Work: 505-265-0243 Cell: 505-362-1776
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