ssget of objects in three different layers

I need to make a selection set of objects in three different layers (or layers with prefix "RH_".

What I have is this - it works when I specify only one layer.

How do I make a selection set of objects on multiple layers ?

(setq lay "RH_D-1")
(setq lay2 "RH_D-2")
(setq lay3 "RH_D-3")
 
(setq blklst (ssget (list (cons 0  "INSERT")
             (cons 8 lay)
             ;(cons 8 lay2)
             ;(cons 8 lay3)
             )))

thanks

[b][color=BLACK]([/color][/b]setq ss [b][color=FUCHSIA]([/color][/b]ssget [b][color=NAVY]([/color][/b]list [b][color=MAROON]([/color][/b]cons -4 [color=#2f4f4f]"<OR"[/color][b][color=MAROON])[/color][/b]
                       [b][color=MAROON]([/color][/b]cons 8 [color=#2f4f4f]"LAY"[/color][b][color=MAROON])[/color][/b]
                       [b][color=MAROON]([/color][/b]cons 8 [color=#2f4f4f]"LAY2"[/color][b][color=MAROON])[/color][/b]
                       [b][color=MAROON]([/color][/b]cons 8 [color=#2f4f4f]"LAY3"[/color][b][color=MAROON])[/color][/b]
                     [b][color=MAROON]([/color][/b]cons -4 [color=#2f4f4f]"OR>"[/color][b][color=MAROON])[/color][/b][b][color=NAVY])[/color][/b][b][color=FUCHSIA])[/color][/b][b][color=BLACK])[/color][/b]

[b][color=BLACK]([/color][/b]setq ss [b][color=FUCHSIA]([/color][/b]ssget [b][color=NAVY]([/color][/b]list [b][color=MAROON]([/color][/b]cons 8 [color=#2f4f4f]"LAY,LAY2,LAY3"[/color][b][color=MAROON])[/color][/b][b][color=NAVY])[/color][/b][b][color=FUCHSIA])[/color][/b][b][color=BLACK])[/color][/b]

[b][color=BLACK]([/color][/b]setq ss [b][color=FUCHSIA]([/color][/b]ssget [b][color=NAVY]([/color][/b]list [b][color=MAROON]([/color][/b]cons 8 [color=#2f4f4f]"RH_*"[/color][b][color=MAROON])[/color][/b][b][color=NAVY])[/color][/b][b][color=FUCHSIA])[/color][/b][b][color=BLACK])[/color][/b]

The 1st 2 are about

The 3rd uses wildcards.

-David

Hi

There are probably a few different ways you can do it

Ssget accepts wild card search patterns (See wcmatch in the AutoCAD AutoLisp help files for list)

layers with prefix "RH_"

(setq blklst (ssget (list (cons 0  "INSERT")
             (cons 8 "RH_*")
             )))

objects in three different layers

(setq lay "RH_D-1")
(setq lay2 "RH_D-2")
(setq lay3 "RH_D-3")

(setq layfilter (strcat lay "," lay2 ","lay3))
 
(setq blklst (ssget (list (cons 0  "INSERT")
             (cons 8 layfilter)
             )))

There are also conditional statements you can use but either of the above should work

Thank you David.

Thank you Jammie.

Resolved my problem and learned a new trick too.

I choose this one:

  (setq blklst (ssget (list (cons 0  "INSERT") 
 (cons 8 "RH_*") )))

I know I'm resurrecting an old thread but for the life of me I couldn't get any of these solutions to work.

I did get this to work though.

(ssget "X"  
 '(
   (-4 . "<OR")
       (8 . "OBJ03")
       (8 . "HIDDEN")
   (-4 . "OR>")
 )
)

Also last but not least (cons 8 "RH_D1,RH_d2,RH_D3")

if you tried this

(setq ss (ssget (list (cons 8 "LAY,LAY2,LAY3"))))

It should have worked.

I know I'm resurrecting an old thread but for the life of me I couldn't get any of these solutions to work.

 

I did get this to work though.

 

(ssget "X"  
 '(
   (-4 . "<OR")
       (8 . "OBJ03")
       (8 . "HIDDEN")
   (-4 . "OR>")
 )
)

This could also be:

(ssget "X" '((8 . "OBJ03,HIDDEN")))

This could also be:

(ssget "X" '((8 . "OBJ03,HIDDEN")))

Yea, I tried that but for some odd reason it didn't want to work. Maybe because I would using it from inside a script?

Anyways, thanks all for your input.

Thanks.

Sadhu this will not work "LAY,LAY2,LAY3" you can not use a lisp variable this looks for layers called lay Lay2 Lay3 see other post about using strcat to use variables.