Associative Dims in Lisp

I can't seem to create associative dims in lisp using a command like this;

(command "_dimlinear" firstPt secondPt DIR "A" Textrot ExtPos)

The Dims are not associative (yes dimassoc is 2)

any Ideas?

Thanks

John Holmes

 

I've noticed this also. Its because of the 'true associativity' of dimensions. When setting the user picked points to variables, then creating the dimension with the variables, the dimensions are not being 'attached' to the drawing objects. Therefore they can't be 'true associative'.

Hope this helps, kind of hard to explain.

 

Your are not using the select object method of creating the dimension. Try -
(if (setq ES (entsel "\nSelect Object for Linear Dimension ? "))
(command "_dimlinear" "" (cadr ES) DIR "A" Textrot ExtPos)
)

 

Will this work with dimensioning in paper space, since you can't select the object ??

 

That won't work because I need to be able to select by point across multiple objects.

Any other ideas?

 

With 'true associated' (dimassoc: 2), your program will not work. The dimensions are being 'attached' to the chosen objects. With dimensioning thru list, the dimensions are being placed to 'coordinates'.

 

Yes, I understand that. But if you select "DimLinear" from the menu, you get select by point method,as and the result is an associative dimension. I would like this functionality thru LIsp.

I have noticed that if any of the points are selected interactively, that the dim is associative, but if you supply all the points, its not.

Thanks

John

 

Exactly. You can't do this with lisp and have 'true associative' dimensions.