[Qgis-user] Poor performance on Toshiba Laptop

[Matt Boyd]

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" <bareman at tpg.com.au> wrote:
> On Sat, 03 Sep 2011 16:12:57 -0300
> acarvajales at fcien.edu.uy 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
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