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CAD tip CAD tip # 9042:

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Random scatter of AutoCAD drawing objects.

A - answer With the freeware LISP utility CADstudio Scatter you can randomly scatter selected, regularly placed objects - e.g. from ARRAY, DIVIDE, MEASURE, etc. You can achieve more natural look of your projects by nudging such objects by small, random displacements.

The application allows to choose displacements in 2D, in 3D or in a single axis only (e.g. only in Z), circular (random direction), along a selected curve (moves only on the curve), or perpendicular to a selected curve. The specified distance is the maximum allowed displacement (linear or normal/gaussian distribution). Associative arrays need to be exploded first.

Since version 1.2 you can also use random rotation with a given max. angle (2D or 3D). Version 1.3 adds normal distribution (Gauss) and circular nudge. Version 1.4 adds optional random scaling (1/X-X).

You can download the Scatter utility from, load it with APPLOAD and run with the SCATTER command.

1000 points located at 0,0 scattered +/- 100 units using different methods:

See also the video:

100% *  CAD 
20.1.2013    7466x  
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See also:
Tip 10976:DUP - easily duplicate AutoCAD drawing objects.
Tip 7811:Nature doesn't use right angles.
Tip 6485:AutoCAD: freehand style drawing (squiggle)
Tip 6287:Work easier with AutoCAD groups.
Tip 6248:Cannot ungroup an object group created in AutoCAD LT.

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