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CAD tip # 6706:

Question

CAD
% platform category

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 5363x

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

See also:
Tip 9185:	Fix problem of Areas on self-intersecting curves in AutoCAD 2013.
Tip 9097:	How to convert 3D polylines to 3D surfaces?
Tip 8962:	Project 2D curve to a 3D sphere.
Tip 8496:	Import a XYZ-coordinate file as AutoCAD points with labels.
Tip 8460:	Unusual AutoCAD linetypes - from Microstation RSC files.

Selected tip: Assigning CAD commands to a 6-button mouse.

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