Transferring elevation data from Google Earth to AutoCAD is a multi-step process because Google Earth’s native profile viewer does not have a direct "Save As DWG" button. To get accurate elevation profiles into your CAD environment, you must convert geographic data into structured coordinate files.
(defun c:pts2pline () (setq ss (ssget '((0 . "POINT")))) (setq i 0 plist nil) (repeat (sslength ss) (setq ent (ssname ss i) pt (cdr (assoc 10 (entget ent))) plist (cons pt plist)) (setq i (1+ i))) (setq plist (reverse plist)) (command "3DPOLY") (foreach p plist (command p)) (command "")) export elevation profile from google earth to autocad