Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Having a points shapefile with z values, how do I keep in the geometry only the x,y values? I also want to move the z values to a newly created double field.

share|improve this question
Might be worth having a look here:… – nhopton Dec 13 '12 at 19:52

What about exporting with appended Lat/Lon (Vector -> Geometry-Tools -> Export/Append Geometry Columns), saving as new file ? If the function is implemented 3D (sorry, I've no idea if) this should give you the required result. To make shure the z is dropped, you might export the result as CSV, edit and again load as new layer.

share|improve this answer
The function doesn't have z support. – tudorbarascu Dec 13 '12 at 18:49
There is an thread which might be helpful:… Especially the idea to transfer the shp into a database – Chris Pallasch Dec 13 '12 at 19:24

I used there I can convert a shape file to csv file with xyz or xy values. Edit and again load as new layer.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.