[Thuban-list] displaying raster is very slow

Jan-Oliver Wagner jan at intevation.de
Wed Jun 29 23:15:52 CEST 2005

On Wed, Jun 29, 2005 at 04:05:20PM +0200, Moritz Lennert wrote:
> I am using Thuban CVS from June 21 on a debian testing centrino
> machine with 512MB RAM and Pentium M 1.6GHz.
> I have a 41MB Tif which I want to display (Corinne Landcover at 250m
> resolution for all of Europe). It takes a long time (ca. 30s) to
> load and display the file. Even when I just hide the layer and then
> redisplay it, it takes ca. 15s to show up.
> As a comparison, QGIS shows the map in 1 second.

in fact Thuban has so far not undergone performance tuning
for raster. There is probably lots of opportunities
to make it run faster.

IIRC Jonathan did something in this area, but it might
only work with wxWidget 2.5/2.6 ... ?

Jan-Oliver Wagner               http://intevation.de/~jan/
Intevation GmbH                      http://intevation.de/
Kolab Konsortium               http://kolab-konsortium.de/
FreeGIS                                http://freegis.org/

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