Pedro Thanks for your help
The resampling is automatically done, so you can use layers that do not match (which cannot be done in saga). However, if grids do match, maybe I should implement some mechanism to avoid the resampling. Let me test those layers and I will tell you what is going on, ok? Thanks again! 2012/5/4 Pedro Venâncio <[email protected]>: > Hi, > > Some new observations I've made. > > In the example I used yesterday, the raster input was float32. > > I tested now with a Int16 raster input and found that the problems are even > greater. On one hand, the rasters are coming out of the Grid Calculator > float32. Secondly, the extent is always changed, and the resample is always > applied, irrespective of whether an odd or even number of layers. > > Screencast: http://goo.gl/A1ccn > > Using the SAGA GUI, the rasters are also converted to float32, but the Extent > is preserved and the resample is not applied. > > Screencast: http://goo.gl/ZJhnv > > I did these tests on Windows 7 and Debian Wheezy, with the same results. > > If someone wants to try to replicate, the original data are from FaunaliaPT > and Professor Gonçalves from University of Porto. > http://www.faunalia.pt/downloads/mdt_aster_pt-tm06_GeoTIFF.tar.gz > http://www.fc.up.pt/pessoas/jagoncal/srtm/dem_srtm_pttm06_80m.tif.bz2 > > Best regards, > Pedro Venâncio _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
