exclude some layers from PURGE?

[Maverick91]

I use the PURGE and the AUDIT commands regularly to keep the drawings clean (including register applications). I have a tool palette button to automate this. I'd like to keep some layers, even if they're not used; they may get used later when the drawings are more developed. Is there a way I can keep some layers from our standard template from being deleted? TIA.

[CADastrophe]

I use the PURGE and the AUDIT commands regularly to keep the drawings clean (including register applications). I have a tool palette button to automate this. I'd like to keep some layers, even if they're not used; they may get used later when the drawings are more developed. Is there a way I can keep some layers from our standard template from being deleted? TIA.

Perhaps you can create a block containing those particular Layers, have the button insert it prior to Purge, and then delete it following the command.

[Coloradomrg]

We use a layer creation lisp, this allows us to purge regularly but still have all of our layers available to us. It's got a button, it's in the right click menu, or it can be typed. This ensures that no matter how a user prefers to work that they have easy access to the command.

I also load our custom linetype file at the start of the lisp.

(DEFUN C:CEILAYER ()
  
  (setq oldlayer (getvar "CLAYER"));get current layer
  (setq oldcmdecho (getvar "cmdecho"))
  (setvar "cmdecho" 0)
;;set linetype scale
  (COMMAND "LTSCALE" ".15")  

;;;load CEI linetypes
(setvar "Expert" 3)
(command "._linetype" "_load" "*" "..../CEI.lin" "")
(setvar "Expert" 0)
;;;ONE LINE LAYERS
(COMMAND "LAYER" "MAKE" "E-1LIN" "C" "134" "" "")
(COMMAND "LAYER" "MAKE" "E-1LIN-DEMO" "C" "40" "" "LT" "DASHED" "" "")
(COMMAND "LAYER" "MAKE" "E-1LIN-EXST" "C" "84" "" "")
(COMMAND "LAYER" "MAKE" "E-1LIN-IDEN" "C" "14" "" "")
(COMMAND "LAYER" "MAKE" "E-1LIN-DEMO-IDEN" "C" "14" "" "")
(COMMAND "LAYER" "MAKE" "E-1LIN-EXST-IDEN" "C" "14" "" "")
(COMMAND "LAYER" "MAKE" "E-1LIN-IDEN-NPLT" "C" "5" "" "P" "N" "" "")  

;;;; other layers here

;;reset existing layer
  (setvar "CLAYER" oldlayer)
  (setvar "cmdecho" oldcmdecho)
(PRINC)
  )

[jaberwok]

or you can use a script to do the same thing.

[rkmcswain]

You could...

...create an entity on that layer and make it invisible.

...add an entity on that layer to one of your used blocks

...attach some xdata to layer 0 that contains a reference to the layer(s) you want to keep.



There is some more detail on the last option, including some lisp code here:

http://forums.autodesk.com/t5/Visual...rs/m-p/1631434

[Tom Beauford]

I use the PURGE and the AUDIT commands regularly to keep the drawings clean (including register applications). I have a tool palette button to automate this. I'd like to keep some layers, even if they're not used; they may get used later when the drawings are more developed. Is there a way I can keep some layers from our standard template from being deleted? TIA.

Add a Layer State to the drawing or template file that contains just the layers you'd like to keep and restore it after purge.