How to change polyline vertices?

[rdogomes]

Hi there

I would like to change the vertices of polylines, but I can only change the first one.

I Can't seem to find the answer anywhere.

Thanks a lot

[rkmcswain]

Hi there

I would like to change the vertices of polylines, but I can only change the first one.

I Can't seem to find the answer anywhere.

Thanks a lot

Since you are asking in the Autolisp forum, I just want to confirm that you are asking how to do this with lisp?
If so, what do you have so far? Please post your code.

[alanjt]

Just for the record, you can do this in PEdit...

Command: pe PEDIT Select polyline or [Multiple]:
Enter an option [Close/Join/Width/Edit vertex/Fit/Spline/Decurve/Ltype 
gen/Undo]: e

Enter a vertex editing option
[Next/Previous/Break/Insert/Move/Regen/Straighten/Tangent/Width/eXit] <N>: n

Enter a vertex editing option
[Next/Previous/Break/Insert/Move/Regen/Straighten/Tangent/Width/eXit] <N>: m

Specify new location for marked vertex:
Enter a vertex editing option
[Next/Previous/Break/Insert/Move/Regen/Straighten/Tangent/Width/eXit] <N>:

Enter a vertex editing option
[Next/Previous/Break/Insert/Move/Regen/Straighten/Tangent/Width/eXit] <N>: 
*Cancel*

[ccowgill]

and if you arent looking for lisp, 2011 has some pretty cool improvements to polylines that make editing a piece of cake.

[rdogomes]

Yes I want to do it with autolisp, sorry if I was vague.

I erased my frustrated attempt to doing it.

I know how to access them, but I don't know how to update the polyline with my changes.

I had the changes in a loop, but when I pass it through the entupd command it only applies the changes to the first vertex of the polyline

[rdogomes]

Just as an example:

What if I wanted to add 1 to the y coordinate of the vertices of a polyline?

There isn't much use to that I know, but I want to be able to update the polyline with some calculations I would like.

[alanjt]

This might help...

http://www.theswamp.org/index.php?topic=18720.30

[rdogomes]

I'm checking it right now. I had to wait for the registering process

[rdogomes]

This might help...

http://www.theswamp.org/index.php?topic=18720.30

Maybe I couldn't understand all of it, but I what I see is a couple of routines to add a vertex to a polyline.

What I want to do is to apply some calculations to existing ones, and have the polyline update on the drawing.

[alanjt]

Maybe I couldn't understand all of it, but I what I see is a couple of routines to add a vertex to a polyline.

What I want to do is to apply some calculations to existing ones, and have the polyline update on the drawing.

I understand that. Which is why I offered you some examples of altering PLines.