Changes between Version 64 and Version 65 of WKTRasterTutorial01
- Timestamp:
- 06/15/10 14:18:05 (14 years ago)
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WKTRasterTutorial01
v64 v65 335 335 }}} 336 336 337 This version takes only 17 minutes. Almost half the time spent by the preceding one... This little increase in complexity certainly worths the gain in performance. The size of the tiles has also a major effect here. If we restart the whole process with 60 pixels x 60 pixels tiles (60 is a divider of 6000) the intersection operation takes 9 minutes. 337 This version takes only 17 minutes. Almost half the time spent by the preceding one... This little increase in complexity certainly worths the gain in performance. The size of the tiles has also a major effect here. If we restart the whole process with 60 pixels x 60 pixels tiles (60 is a divider of 6000) the intersection operation takes 9 minutes. 200 pixels x 200 pixels: 47 minutes... 338 338 339 339 Once again you can visualise the result of the query by doing this query in OpenJUMP (you might have to increase RAM allowed to OpenJUMP by changing "-Xmx256M" to "-Xmx1024M" in "OpenJUMPInstallPath/bin/openjump.bat"):
