Transform a 3D polyline into a 2D polyline

2D plans Layout
1

Hello

How can a 3D polyline be transformed into a 2D polyline on Autocad?

Thank you in advance for your answers

1 Like
2

Hello

There is an option for this, in English, it is:

Ribbon

Modify tabDesign panel  Convert 3D To 2D Polylines 

Menu

Grading menuPolyline UtilitiesConvert 3D To 2D Polylines

Command Line

Convert3dPolys

See the other two tabs here:

http://docs.autodesk.com/CIVIL/2010/ENU/AutoCAD%20Civil%202010%20User%20Documentation/index.html?url=WSfacf1429558a55de1d677851071c252c77-71a4.htm,topicNumber=d0e97388

3

and in French what does it look like to follow, 

I tested the "Convert3dPolys" command as shown but it marks me unknown command

4

And with a front dash? _Convert3dPolys

Because English commands can be launched in AutoCAD thanks to this dash

5

same answer unknown command

6

In fact, a priori this command exists in AutoCAD CIVIL 3D, but not standard AutoCAD...

 

So there is a LISP program available here but the one for message #5 is not found, the one for message #6 should work:

http://cadxp.com/topic/25683-convertir-polyligne-3d-en-polyligne-2d/page__p__139911__hl__24255__fromsearch__1#entry139911

Otherwise, ask that he repost the program they talk about in message 5...

1 Like
7

Hello

Otherwise, there is the "FLATTEN" command of the "Express Tools" which flattens any object according to the current view (so put yourself on the plan view).

It remains a 3D polyline but all vertices have their Z=0.

Then, if you absolutely want a 2D polyline, you explode the 3D polyline and you run the "_PEDIT" command to recreate the polyline using the "join" option. If you have 50 to do, I don't think it's worth it.

A+

1 Like
8

Hello

You break down your 3D polyline

You open the properties window

You select the whole of your now broken down polyline.

In the properties window the "Z-start" and "Z-end" are "Varied", you have to set them to 0.

Then, all that remains is to join the lines to make a polyline (2D).

There you go

Have a nice day!

1 Like
9

Thank you for your answers