#2036: Failed watershed analysis on Grass --------------------------+------------------------------------------------- Reporter: mehmeto | Owner: grass-dev@… Type: defect | Status: closed Priority: normal | Milestone: 6.4.4 Component: Raster | Version: 6.4.2 Resolution: fixed | Keywords: LFS, r.watershed Platform: MSWindows 7 | Cpu: x86-64 --------------------------+-------------------------------------------------
Comment(by hamish): Replying to [comment:6 mehmeto]: > Tried to do the same analysis with Spearfish data that also is in the > installation package and it worked. It should be a memory problem indeed. > (although Spearfish map looks larger) Hi, I think there was a missing step at the start where you need to right click on the elevation map name in the layer manager and choose "Set computational region from selected map(s)". I've done a number of updates to that tutorial, but I still need to merge them into the GRASS wiki, https://trac.osgeo.org/osgeo/changeset?new=10348%40livedvd%2Fgisvm%2Ftrunk%2Fdoc%2Fen%2Fquickstart%2Fgrass_quickstart.rst&old=9076%40livedvd%2Fgisvm%2Ftrunk%2Fdoc%2Fen%2Fquickstart%2Fgrass_quickstart.rst Note I had to go full-Spearfish for the live disc tutorial (http://live.osgeo.org) since we didn't have enough room for both the NC grass location and the semi-cloned NC shapefile/geotiff shared dataset. In practice my idea to make the tutorial generic for both sample datasets didn't work well anyway. Also the watershed threshold size given for Spearfish should be different for NC. Still todo for the live disc is a script to re-create the GRASS NC location by importing those source files, but I think first to remake the geotiffs for Helena with the newer r.out.gdal magic for correct data types and better metadata. We are also working on a "big data" directory for people with the live disc booting from e.g. 8gb USB sticks, with an extra directory in the top FAT32 partition with extra data, so could store nc_08.tgz there. (rc.local will decide at boot time if to symlink to that data (if it is present) or place an index.html in that dir with links to download from online) Hamish -- Ticket URL: <https://trac.osgeo.org/grass/ticket/2036#comment:8> GRASS GIS <http://grass.osgeo.org> _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev