[Qgis-user] How do you deal with lots of raster data?

maning sambale emmanuel.sambale at gmail.com
Wed Sep 1 02:00:44 PDT 2010


two options:

- gdal's Virtual Raster Format (vrt) - you can create vrt files using
the Raster Tools plugin
- RasterLite - looks promising but not using it at the moment

On Wed, Sep 1, 2010 at 4:44 PM, Alister Hood <alister.hood at synergine.com> wrote:
> Hi everyone,
> I'm looking for insight into dealing with large amounts of raster data in
> QGIS; at the moment I'm really interested in just displaying background
> images, not doing raster analysis.
>
> Trying to add several hundred ecw images takes an extremely long time and a
> lot of memory.  I thought QGIS might establish the location of each image
> but only load images that are visible in the map extents (and maybe adjacent
> images, to speed up panning and zooming).  However it seems like it must be
> loading all of the images.  Is that right?
>
> Would it be better for me to install some sort of tile server that I can
> load the images into and connect QGIS to?  How do other people deal with
> large amounts of raster data?
>
> Thanks,
> Alister
>
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
>



-- 
cheers,
maning
------------------------------------------------------
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
------------------------------------------------------



More information about the Qgis-user mailing list