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CAD tip CAD tip # 6706:

Question CAD 
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Q - question

What is the maximum number of vertices in AutoCAD polylines?

A - answer The number of polyline vertices (in a Polyline, LWpolyline, 3Dpolyline, Spline) is not limited in AutoCAD, you can use any practical number of polyline nodes (vertex). So you can create and edit curves with more than 100.000 vertices.

With such extremely large polylines, you have to count with slower response in some operations (e.g. displaying grips on grip-editing).

You can try yourself the following AutoLISP code:

(setq x 0 y 0)
(setvar "CMDECHO" 0)
(command "_PLINE")
(repeat 100001
 (command (list x y))
 (setq x (+ x 1.0) y (+ y 1.0))
(command "")
(setvar "CMDECHO" 1)

For comparison: the maximal number of polyline vertices is limited to 101 in the DGN V7 format, and to 5.000 points in the DGN V8 format.

100% *  CAD 
27.5.2009    7889x  
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See also:
Tip 11074:How to convert a 2D polyline to 3D or vice-versa?
Tip 11054:Difference volume (3D solid) between two TIN surfaces (sets of coordinates)
Tip 11037:How to hatch area defined by border points, not geometry?
Tip 10926:Self-intersecting polylines and polylines with duplicate vertices.
Tip 10636:The entity isn't planar to the World Coordinate System and can't be converted.

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How to remove unwanted references to .DXE files? « | » Simply create points or polyline from coordinates in Excel.

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