Select layer by location AND attributes. Please help!

Discussion created by cjrwil on Aug 15, 2011
Latest reply on Aug 16, 2011 by cjrwil

I have a dataset (i.e. a shapefile) containing spatial location data and elevation data etc.

I want to select points which have at least 200m vertical separation (i.e. are at least 200m apart on the z axis) AND are within 3km of each other.

Im sure there is a solution to this problem but i just cant find it. any help would be greatly appreciated.