Multiple open polyline offsets

[narahariak]

I have a dwg in which multiple polylines are in different angles. actually these are al the centerline of roads. I want to offset these polyines on either side with some dist to make a roadwidth. later post offset that polylines has to be changed to different layer.

Can anyone help me in writing lisp for the same.

[parkr4st]

Been done. examples.

https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/double-offset-and-trim-multiple-line...

https://autocadtips.wordpress.com/2013/05/15/autolisp-advanced-polyline-offset/

http://forums.augi.com/showthread.php?3986-Double-Line-Offset

and  a search will find others.  I used               autocad lisp for offsetting lines            in google

[kajar]

Another way is to convert polylines to SDF or other GIS format  and create buffer around features.