I think others have used the AC3D point field format (.pf files) for this sort of thing - it's similar to a few of the ascii dem formats. From the plugin-about
:
Code:
Field Import Plugin - Version 1.1 - by Inivis
Loads a grid of points.
The first two numbers in the file are the x, y size of the grid.
this is followed by (x*y) heights in row order.
This plugin then assembles a 3d mesh from these points.
Andy