Layer name change

[CAD2005]

I wish there was a lisp to change the layer name, just change the name. and I found lee-mac's lisp but can't use it.

I want to change the old layer name to the new layer name, like the rename command. Thank you

 

(defun c:layren ( / enx obj old new )
    (setq old "Layer_to_be_Renamed"
          new "New_Layer_Name"
    )
    (if (and (setq obj (tblobjname "layer" old))
             (setq enx (entget obj))
        )
        (entmod (subst (cons 2 new) (assoc 2 enx) enx))
    )
    (princ)
)

 

Edited December 22, 2024 by CADTutor

[Emmanuel Delay]

That code works perfectly.

 

So, if you have a layer named "Layer_to_be_Renamed"

then the script will change the layer name to "New_Layer_Name".

 

The question is: what would you like the code to do exactly?

Do you want to type the old layer, then type the new layer?

 

Here's what you could do:  Command LAYREN1

;; type old layer name, then type new layer name
(defun c:layren1 ( / old new )
	(layren (setq old (getstring "\nOld layer name: "))  (setq new (getstring "\nNew layer name: ")))
	(princ)
)


(defun layren ( old new  / enx obj )
    (if
		(if (and (setq obj (tblobjname "layer" old))
				 (setq enx (entget obj))
			)
			(entmod (subst (cons 2 new) (assoc 2 enx) enx))
		)
		(progn
			(princ (strcat 
				"\nLayer \""
				old
				"\" got renamed to \""
				new
				"\""
			))
		)
    )
)

 

But again, what do you want the code to do?  How do you want it to work?