Delete a layer...

I've got some layers in my drawing that absolutely have nothing on them and they are not referenced by any blocks, but I cannot purge them out. Seems that sometimes when this has happened if I delete all of the viewports (even though the viewport is not on that layer) I can then purge out the layer(s). I have too many viewports in my current drawing to do this. Any ideas on how to get rid of these layers?

 

Use:

(setq ss (ssget "X" (list (cons 8 "LayerName"))))

to check each layer to see if there is anything on them.
Could be a zero length text line or viewport.
Either change the ents in ss to another layer or delete them.

You could wblock the entire drawing out to another name and see if you can purge it and then replace the old drawing with it.

HTH

Bill

 

Is the layer frozen in one of the viewports?

--

-Jason
Member of the Autodesk Discussion Forum Moderator Program

referenced by any blocks, but I cannot purge them out. Seems that sometimes when this has
happened if I delete all of the viewports (even though the viewport is not on that layer)
I can then purge out the layer(s). I have too many viewports in my current drawing to do
this. Any ideas on how to get rid of these layers?

 

Yes.

 

Thaw that layer in all the viewports, then you should
be able to purge (assuming there are no other items
referencing the layer)

 

That got it. Is this because the vp holds the layer name in the extended data?

 

Yes.

 

If you can not purge a layer that is not used, even in a block, than mostly
it contains invisible objects.
Invisible objects are for instance Text that contains spaces or Blocks that
do not contain any objectst.
You can not erase those objects because yo can not select them with a
crossing or window.
You can only select them with the option keyword ALL.
Do the following:

1: Thaw, On and Unlock all layers.
2: Go to Model
3: Zoom All.
4: Activate ERASE.
5: Type in: ALL <Enter>
6: De-select everything on your screen with a crossing (pressing
<Shift>).
7: Press <Enter> to end selection.
8: Repeat 3 - 7 in all layouts.
9: Try to purge your layer.

JanC.

and they are not referenced by any blocks, but I cannot purge them out.
Seems that sometimes when this has happened if I delete all of the viewports
(even though the viewport is not on that layer) I can then purge out the
layer(s). I have too many viewports in my current drawing to do this. Any
ideas on how to get rid of these layers?