[Qgis-developer] Possible bug? Viewing rasters at 2:1 scale

Maciej Sieczka msieczka at sieczka.org
Mon Mar 23 16:15:22 EDT 2009


Paolo Cavallini pisze:
> luca_manganelli at comune.trento.it ha scritto:

>> I discovered that viewing any type of raster at 2:1 scale is VERY
>> slow.
>> 
>> This is strange because, franlky, you see a scaled image of about
>> 10x10 pixels.

I confirm. Seems QGIS goes into some looong loop when trying to zoom to
extreme. You can't interrupt the rendering then and the memory usage
jumps rapidly. Memory leak?

1. Load a georeferenced raster.
2. Set-up your project CRS and units accordingly.
3. Try to set zoom level to 1:1 or finer (e.g. zoom in with mouse wheel
quick).
4. Wait for ages or run out of memory.

Maciek

-- 
Maciej Sieczka
http://www.sieczka.org



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