CAD tip # 12310:

Question CAD
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How to check if a dimension is associative or not? (LISP)

Using the following LISP function you can verify whether the given dimension entity is associative or disassociated. The function returns nil or the number of the associative point.

; returns nil or assoc point number (1, 2, 3=both)
(defun isDimAssoc? (diment / elst dict)
 (and
  (setq elst (entget diment))
  (setq dict (cdr (assoc 360 elst)))
  (setq elst (entget dict))
  (setq elst (entget (cdr (assoc 360 elst))))
 )
 (cdr (assoc 90 elst))
)

Use this function e.g. this way:

(isdimassoc? (car (entsel "\nPick the dimension to check associativity: ")))

ACAD

* CAD

10.7.2019 1630×

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applies to: AutoCAD ·

See also:
Tip 11989:	How to dimension an ellipse in AutoCAD?
Tip 11823:	Associative dimensions in drawing views of a 3D model in AutoCAD.
Tip 8710:	Annotation monitor in AutoCAD 2013.
Tip 8411:	My associative dimensions are not being updated.
Tip 7954:	AutoCAD 2012: Generate 2D drawing views from 3D models.

Selected tip: Blocks perpendicular to a polyline.

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