[Qgis-developer] Slow project opening

[Tim Sutton]

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Hi

Manuel Massing wrote:
> Hi Craig,
> 
> in my experience slow loading of project files is often due to
> thumbnail creation, which requires creating a downsampled
> version of the file. This may be very inefficient if the input file
> does not support overviews. 
> 
> You could try adding overviews for your input rasters using the gdal 
> utility "gdaladdo".

Could I suggest you use the gdalbuildvrt tool to create a single virtual
raster dataset. Its much more efficient and means you only need to add a
single layer to the legend which is much easier to deal with visually.

You need gdal 1.6 with python support for the tool I believe.

Regards

Tim


> 
> cheers,
> 
>    Manuel
> 
> _______________________________________________
> Qgis-developer mailing list
> Qgis-developer at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-developer
> 


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Tim Sutton - QGIS Project Steering Committee Member (Release  Manager)
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