CAD tip # 6706:

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What is the maximum number of vertices in AutoCAD polylines?

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)
(vl-load-com)
(vlr-beep-reaction)

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.

ACAD2010ACAD2009LTADTMap

* CAD

27.5.2009 1758x

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applies to: AutoCAD 2010 · AutoCAD 2009 · AutoCAD LT · AutoCAD Architecture · AutoCAD Map ·

See also:
Tip 7273:	How to create custom line styles for GIS maps?
Tip 7266:	How to convert 2D polyline to 3D polyline?
Tip 7099:	Blocks perpendicular to a polyline.
Tip 7093:	How to convert a polygon or a region to 3Dfaces.
Tip 6955:	Simply add or delete a polyline vertex.

Selected tip: Raster file formats supported in Raster Design 2008.

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