while its not quite an answer to this question. I had better performance when using postgis for large files instead of shape files. the new spatial lite stuff may well be better also. On Sep 4, 2011 11:55 AM, "Mick" <[email protected]> wrote: > On Sat, 03 Sep 2011 16:12:57 -0300 > [email protected] wrote: > >> Mick: I'm sorry but i don't quite get what you mean by 'breaking' >> down the file. I suspect all of this problems i'm having are indeed >> related to the file, but i just don't have enough info on how it was >> built. I'll try to get that info as soon as i can and share it with >> you guys. >> > One of the first files I used in a GIS was a line layer representing 100 > square kilometers of rugged hills. It contained: > about 100,000 contour lines > 2,000 kilometres of forestry tracks > 1,000 kilometres of public roads > 800 kilometres of waterways > > In total there were 900,000 individual objects in the file. Each time I > edited an element it took 10 minutes to refresh the display (or 30 > minutes if I had labels showing. > > In frustration with the refresh times I separated the single file in to > separate files for each line type (contours, forestry tracks, public > roads, waterways). After this even with all files open and showing > labels, refresh times dropped to quick enough to appear instant. > > mick > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user
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