Hi Alexander, Thanks for your reply. In my understanding, this only applies if I have point coordinates, right? If I have polygons I think I need another syntax?
I can create centroids in Vector > Geometry > Polygon Centroids tool then apply $x and $y to extract lat lon coordinates, but in some cases I want to skip this process if I am dealing with more than 300 thousand features in my polygon layer. Thanks, -Leo On Thu, Aug 28, 2014 at 3:01 PM, Alexandre Neto <senhor.n...@gmail.com> wrote: > Hello Leo, > > That's quite straightforward actually. In the field calculator (or in any > other instance of expression builder) there are 2 geometry functions to > achieve what you need, $x and $y. > > You can either put them in separate fields or create a string to populate > a single one. Something like this, > > $x || ' , ' || $y > > Would produce something like this: > > '1234.56 , 9876.43' > > Notice that the double pipe character || works as a string concatenator. > And that the result is a string therefore not useful for any arithmetic > operations after. > > Hope this helped. > > Best regards, > > Alexandre Neto > Em 27/08/2014 22:37, "Leo Kris Palao" <lk.pa...@gmail.com> escreveu: > >> Hi QGIS users, >> >> I don't know if this question has been asked before. >> >> Can you help me create a syntax in field calculator to add in the >> attribute table the centroids coordinates for each or selected polygon >> features? >> >> I am using Qgis 2.2 "Valmiera" version in Windows. >> >> Thanks in advance for help, >> -Leo >> >> _______________________________________________ >> Qgis-user mailing list >> Qgis-user@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/qgis-user >> >
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