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CAD tip CAD tip # 6544:

Question CAD 
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Q - question

How to set a coordinate system with a single button?

A - answer If you often need to change or assign a coordinate system in your drawings (maps), you may need a commandline version of the command in Map (a dialog-based command by default).

You can use e.g. the following LISP macro:

(defun C:SetWGS ()  
(setvar "CMDDIA" 0)  
(command "ADESETCRDSYS" "_ses" "LL84" "_ex")  
(setvar "CMDDIA" 1)  
The newly defined command SetWGS can be then assigned to a toolbar button or keyboard shortcut.

Another - simpler method is to use the LISP function:

(ade_projsetwscode "LL84")  
100% *  CAD 
24.2.2009    10679×  

See also:
Tip 12766:Lines with a single grip, incorrect osnaps, intersections, offsets, hatches - CheckLarge
Tip 11970:How to find the map coordinate system of a drawing?
Tip 11967:How to apply a changed drawing template (DWT) to existing drawings?
Tip 11847:Automatic UCS aligned with the current View (UCSauto switch).
Tip 10636:The entity isn't planar to the World Coordinate System and can't be converted.

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