Sorry in advance if this question has already been asked, I found nothing to help. I want to buid a 3D box whose top surface is topography. This topography is defined by a DEM i.e. a set of points (x,y,z) where z is the elevation and (x,y) are known on a cartesian grid. How to include this set of points to generate a surface, meshed in triangles, to finally have a 3D mesh with tetraedra.
Thank you in advance for help, Nathalie Glinsky