Select Contour Labels by Surface

[AllenJessup]

Is there a way to select Contour Labels by Surface they reference? I copied some labels and changed the Surface they reference. I created layers for each Surface later and now the Labels are on the wrong layer. 

[ChrisRS]

So surfaces A, B, and C on layers One, Two, and Three. If you temporarily assign a style with contour display off to surfaces A and B you will only see contour elevations for C. I don't know if that helps. I'm away ftom my computer.

[AllenJessup]

That does work. I was hoping to select by reference Surface so I could see where there were duplicate layers for each surface where the labels are next to each other. I'll have to go through them Surface by Surface. 

This is an area where two surfaces are the same.

Since I have Sincpac. I can easily toggle the Contours on and off without changing the Style.

[AuditInPaperSpace · Accepted solution]

@ChrisRS , unfortunately contour labels can still be selected (via QSELECT or SELECTSIMILAR) even if their parent surface is off/frozen.

@AllenJessup , give this lisp a shot: 

(defun c:SELECTBYSURFACE (/ exampleLabel exampleLabelVLA exampleLabelDxfType targetSurfaceName result sslabel i label labelSurfaceName) 
  (setq exampleLabel (car (entsel "\nSelect a label on target surface:")))
  (setq exampleLabelVLA (vlax-ename->vla-object exampleLabel))
  (setq exampleLabelDxfType (cdr (assoc 0 (entget exampleLabel))))
  (setq targetSurfaceName (vlax-get-property (vlax-get-property exampleLabelVLA 'Surface) 'Name))
  
  (setq result (ssadd))


  (setq sslabel  (ssget "x" (list (cons 0 exampleLabelDxfType))))
  (setq i 0)


  (repeat (sslength sslabel)
    (setq label (ssname sslabel i))
    (setq labelSurfaceName (vlax-get-property (vlax-get-property (vlax-ename->vla-object label) 'Surface) 'Name))

    (if (= labelSurfaceName targetSurfaceName)
      (ssadd label result)
    )
    (setq i (1+ i))
  )
  (sssetfirst nil result)
  (princ)
)

Someone else on the forum came up with an AutoLISP to select labels by their style, and I've used their code as a starting point. I wish I could remember who it was, but I don't have it written down 😞

[AuditInPaperSpace]

@ChrisRS 

I may have misunderstood what you were saying. Because you're right, after you turn the other surfaces off, you could easily layiso and window select all of the labels, and then put them on the right layer. 

[AllenJessup]

Thank you. That does what I need. I can now see which are associated with that Surface and move them all to the correct layer at once.