[Qgis-user] Re: qgis and big raster catalogs

[Agustin Lobo]

why not having the py script you mention as an option and active by default?
Agus

El día 31 de marzo de 2012 13:12, Andrea Peri <aperi2007 at gmail.com> escribió:
>>One question: how to get a fast raster catalog in QGIS with a big number of
>> rasters in it? (in this case 400 ecw)
>>
>>I am having trouble getting this to work... I tried a vrt catalog and qgis
>> just hangs when I load it.
>>
>>Reducing the number of images makes it ok.
>>
>>Is this a know limitation of gdal/qgis? Is there another approach to
>> catalogs (not mosaics)?
>
>
> Hi to have a good working catalog VRT for qgis, you should do a prelimiary
> operation.
> Infact the gdal catalogs has not the statistics, and wgis try to calculate
> it the stats, causing the slooowing when the raster are big.
> To avoid this you can find how to do here.
>
> http://trac.osgeo.org/gdal/wiki/CatalogueForQIS
>
>
> Regards,
>
> --
> -----------------
> Andrea Peri
> . . . . . . . . .
> qwerty àèìòù
> -----------------
>
>
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