Removing multiple vertices in 3D polyline with a selction window

[Jeremiah D]

Hello all,

 

I have a 3D Polyline with a lot of unneeded grip points which I need to remove. So many that neither Pedit or hovering over the grip point and selecting remove vertex are getting it done in a timely manner. Ideally, I would like to be able to use the selection window to be able to zoom in and precisely choose which points will go instead of a routine that sets a certain distance between points when determining which vertices are redundant for the user.

 

I know my way around stock autocad pretty well, but I am a total newbie when it comes to writing lisp routines beyond simply automating my standard commands. So any help with this would be greatly appreciated.

 

Thank you

[David Bethel]

Can you post a sample ?

[Jeremiah D]

Sorry. Yes

column roughout.dwg

[Jeremiah D]

Here are some snapshots in case they're helpful to anyone.

[David Bethel]

What is the accuracy that you require ?

 

I found 10,237 points out of 10,888 that could be colienar within 0.001 units

 

-David

[Jeremiah D]

It's the last roughing cycle before the finish pass on a mill. It's leaving .035" of material remaining, so .02 to .025 to be safe. I do need to do the same thing on other polylines that would require tighter tolerances though.

 

Thanks