Patrick Schirmer wrote: > v.vect.stats fits perfect to what I was looking for. Thanks a lot! Am using > the GRASS-Version 6.4 coming out of UbuntuGIS(unstable) and didn't know > about additional tools in the SVN that could be implemented.
See http://grass.osgeo.org/wiki/GRASS_AddOns g.extension in GRASS6.4.0RC7 should be able to install add-ons, not sure about RC6 > I guess the > repository is not the latest version of GRASS, though. > That leads to a more general question installation practice for GRASS on > Ubuntu. It seemed the simpliest way to install it though the > UbuntuGIS-repository (apt-get/synaptics). An installation through the > svn-branch would be more up-to-date, but this becomes a local installation > and compatibility with the rest of my System would not be checked (please > correct me if I am wrong here). You should remove the older GRASS version installed from the UbuntuGIS-repository first, if you want to install e.g. a generic weekly snapshot from here http://grass.osgeo.org/grass64/binary/linux/snapshot/ Markus M > What is your experience on this and what > would be best-practice for a non-developer? Maybe somebody of the developers > also knows how often the UbuntuGIS(unstable) repository is being updated > concerning GRASS. This seems to be a relevant question for people who want > to start with GRASS, as I just did. > > Thanks and kind regards, > > Patrick > > > > > Markus Metz wrote: >> >> Patrick_schirmer wrote: >> >>> >>> Dear all, >>> >>> Unfortunately I am not really used to work with GRASS so this might be a >>> rookie-question. But I am not able to solve it alone, don't find any hint >>> on >>> the net and thus will need your help: >>> I got a map of polygones and a map of points. My aim is to sum up the >>> attributes of a defined column in the point-map to the polygone where >>> they >>> are lying in. So what I am looking for is a function saying 'spatial >>> join' >>> of polygons and points with the options 'contains' by using the function >>> 'sum'. The only thing I can find will be v.what.vect. which will allow to >>> give the point the value of the polygone, but not the other way round. >>> >>> Is there a simple solution to that question within GRASS6.4? (I think >>> QGIS >>> is having this option, but I would like to solve it within GRASS6.4). >>> >>> >> >> Try v.vect.stats from grass-addons, this would do the job in one step, >> optionally updating polygon attributes with statistics calculated on >> point attributes per polygon. >> >> svn checkout https://svn.osgeo.org/grass/grass-addons/vector/v.vect.stats >> >> Markus M >> >> > > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
