<html><head><base href="x-msg://193/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Kurt,<div><br></div><div>The other mail thread on raster performance, although focused on jp2 issues, covers this topic.</div><div><a href="http://lists.osgeo.org/pipermail/qgis-user/2010-January/007576.html">http://lists.osgeo.org/pipermail/qgis-user/2010-January/007576.html</a></div><div><br></div><div>Follow to the end where Craig mentions performance increases across other raster types. Unfortunately, you will need to venture into the development branch. I believe you can get nightly builds of the osgeo4w package, but I am not sure. You can also find build instructions for various platforms on the qgis wiki.</div><div><br></div><div>Good luck,</div><div>John</div><div><br><div><div>On Jan 23, 2010, at 5:49 AM, Kurt Menke wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div lang="EN-US" link="blue" vlink="purple"><div class="Section1"><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 12pt; ">Hello,<o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 12pt; ">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. <span class="Apple-converted-space"> </span></span>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.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">I’ve seen some discussion of slow start up issues and raster rendering issues. <o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">Would JasPer effect *.img rendering? If so how can I determine if I or my MacBook user are running that? <o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">Does QGIS utilize *.rrd pyramid files generated by ArcGIS?<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">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.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">Thanks<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; ">Kurt<span style="font-size: 12pt; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 12pt; "><o:p> </o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 10pt; color: black; ">**************************<o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 10pt; color: black; ">Kurt Menke, GISP<o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 10pt; color: black; ">Bird’s Eye View<o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 10pt; color: black; "><a href="http://www.birdseyeviewgis.com/" title="http://www.birdseyeviewgis.com/" style="color: blue; text-decoration: underline; "><span style="color: blue; ">www.BirdsEyeViewGIS.com</span></a><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 10pt; color: black; ">Work: 505-265-0243<o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 10pt; color: black; ">Cell: 505-362-1776<o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 12pt; "><o:p> </o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div></div>_______________________________________________<br>Qgis-user mailing list<br><a href="mailto:Qgis-user@lists.osgeo.org" style="color: blue; text-decoration: underline; ">Qgis-user@lists.osgeo.org</a><br><a href="http://lists.osgeo.org/mailman/listinfo/qgis-user" style="color: blue; text-decoration: underline; ">http://lists.osgeo.org/mailman/listinfo/qgis-user</a><br></div></blockquote></div><br></div></body></html>