[postgis-users] getting the nodes of a geometry

[toni hernández]

hi all,

I have a multinlinestring geometry in 3D. I want to get the z for each 
point of the geometry.

I 've been looking for a function that returns all of the points of a 
geometry (multilinestring) so I can run the z function on every point.

Is there a faster way to do this than get all the points with the npoint 
function (one at a time)?

thanks.