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CAD tip CAD tip # 5448:

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Q - question

How to select all entities in a specified layer?

A - answer To quickly select all objects from a given layer you can use the QSELECT or FILTER commands and choose the layer from a layer list. Or - in newer AutoCAD versions - use the command SELECTSIMILAR and pick a sample object.

But there is a quicker way - you can use a simple macro which selects all entities in the same layer as the layer of a picked entity (you can also pick nested objects and multiple objects/layers). The SELLAY.LSP macro can be found on or just type in:

(defun C:SELLAY ( / e lay)
 (setq e (nentsel "Select entity on a layer: "))
 (if e (ssget "_X" (list(cons 8 (cdr(assoc 8 (entget(car e))))))))
Load the LSP file with APPLOAD and then anywhere AutoCAD prompts to "Select objects" just type 'SELLAY (or 'SELLAYS for multiple layers).

If you enter SELLAY (or SELLAYS) as a primary command (on the Command: prompt), the objects will be selected as a grip selection set (for subsequent command). If you grip-select a group of objects before running SELLAY, only objects from this preselection set will be selected/filtered (not from the whole drawing).

100% *  CAD 
1.3.2007    81019x  
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applies to: AutoCAD ·

See also:
Tip 10015:How to select and modify objects in all layouts of the DWG?
Tip 8857:Move all blocks containing a specific layer to that layer.
Tip 8415:Recolor entities to the color of their layer.
Tip 8128:How to quickly get the real color of a drawing entity?
Tip 7890:How to find missing numbers in a series of numbered blocks?

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