There are lots of lisps out there that do this. One is called
Flatten.lsp. others may be available at Dotsoft.com
or , you can try the attached file that I wrote for my own needs. It
takes lines (not plines , arc or circles) and moves the endpoints to
zero elevation.
-Brian- wrote:
>
> I was wondering the same thing. I have a drawing that has some lines,
> when viewed from the side, that start on the zero (Z) plane and end up
> somewhere in space on a different (z) plane. I've tried to use the
> properties box and reset the values of the starting (Z) axis and the
> ending (Z) axis to zero, but there's just too many lines to do this
> one at a time.
>
> Anyone know a of a way to do this?
>
> Thanks,
> Brian