On 12/04/2011, at 22:11 , Julio Cesar Canales DElgadillo wrote: > Hello there Qgis people, > I have a couple of questions about the use of GDAL tools. I tried to > rasterize some vector layers using the rasterize tool of GDAL, but it is not > clear for me what means: "output file for rasterized vectors (raster, must > exist)", I have no a raster for these areas (and this is the reason I wish to > create it), may be I'm not understanding something but I do not what it is, > somebody knows about it or knows where to find a tutorial on this function? > Do you know if there is some way to analize with Qgis the connectivity > between different classes in a raster (categorical raster), something like > fragstats does? If yes I will be so grateful for any information about it. > Best wishes. > Biól.MCF. Julio César Canales Delgadillo.
I know what it means, but I don't know (yet) an easy way around it (does anyone here have any *easy* suggestions?). Up to version GDAL library version 1.8, GDAL is not able to make its own rasters. Therefore, GDAL expects a raster of the right size and projection to exist for GDAL write into. If you're using trunk (1.7) on windows GDAL 1.8 is available and you can ignore this. -ramon._______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
