Hey, So I will get right to the problem I have. I have two different Layers with the same content from different times. Now I want to know which points changed their location and which have been added or deleted so I just wanted to find the points which do not overlay by using Vector -> Geoprocessing Tools -> Difference (I wasnt sure if the one I was looking for was Symetrical Differnce so I tried both) I then realzied that not a single point was overlaying due to the fact that the points that should have the same location were all seperated by about 3 meters.
Pictures: In the first picture you see a red point. Out of these kind of points I want to make a new layer. The second picture is a zoomed in version of the area highlighted in the first one. <http://osgeo-org.1560.x6.nabble.com/file/n5162929/Pic1.png> <http://osgeo-org.1560.x6.nabble.com/file/n5162929/Pic2.png> Here is my question: How do I find the points which are not in distance of 3m to each other? I made some attempts with buffers and the difference tool again but non worked. Does anyone have an idea? Greetings Henrik -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Finding-Points-which-do-not-overlay-tp5162929.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user