Is there anyway to use LISP to list the x,y coordinates of a pline?
What format do you need them in? For a Lightweight Polyline, this will give you a simple list of the X & Y coordinates of the vertices, undivided into individual points [supply appropriate information in place of the green parts]:
(vlax-get (vlax-ename->vla-object PlineEntityName) 'Coordinates)
Or [again for a Lightweight Polyline] this will give you a list of two-coordinate lists [the same as above, but divided into a separate pair for each vertex], removing the 10's from the vertex entity data entries:
(mapcar 'cdr (vl-remove-if-not '(lambda (x) (= (car x) 10)) PlineEntityData))
Might you sometimes be working with "heavy" Polylines [2D or 3D]? Some adjustment would need to be made to get rid of the Z coordinates that the above functions would include for those.
Other adjustments would need to be made if you need them as comma-separated pairs, or written out to a file, or....
Test out the attached for LWPolylines, by loading file with APPLOAD and then typing PLVERTEX. Application will list all x,y coordinates for vertices of polyline.
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