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CAD tip CAD tip # 12310:

   
Question CAD 
 %  platform  category 
Q - question

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

A - answer 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: ")))

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applies to: AutoCAD ·

See also:
Tip 13552:Differential dimension X,Y
Tip 13426:Use of alternative units for arithmetic in dimensions (without square brackets).
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.


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