topic Betreff: Closed polyline with area 0 in AutoCAD Forum

Closed polyline with area 0

Anonymous — Tue, 22 Oct 2019 09:15:58 GMT

This is a mystery to me, sure I am missing something here - please see the attached.

There are two closed polylines, both seem to be of a similar area.

The red polyline shows area "0.0" and the green one approx 10.9m².

What am I missing? How is this possible?

Betreff: Closed polyline with area 0

cadffm — Tue, 22 Oct 2019 09:28:28 GMT

The polyline is crossing herself, check the 12. vertex by using properties palette or PEDIT

- that's the problem.

Betreff: Closed polyline with area 0

Anonymous — Tue, 22 Oct 2019 09:39:42 GMT

Thank you!

I have exploded the polyline and joined the segments with PEDIT - I didn't notice this extra vertex because now the area showed the correct number 🙂

Betreff: Closed polyline with area 0

Anonymous — Tue, 22 Oct 2019 19:55:20 GMT

After exploding a PLINE (and you are sure you only need one of each), you can try the command OVERKILL to delete any duplicates. For example, if you have three lines drawn over top of each other, OVERKILL will delete two of them. You can chose to ignore certain object types, and set tolerance values like distances in XYZ. This is if you know some of your duplicates are actually just VERY close to each other, or perhaps have different Z values and can't see them from a top-down view.

Betreff: Closed polyline with area 0

Anonymous — Tue, 06 Oct 2020 09:55:57 GMT

hello, i also have the same problem. I traced this polyline from a boundary of a map. I've already tried close, pedit, overkill. nothing seems to work. i'm still getting a 0 area.

Betreff: Closed polyline with area 0

cadffm — Tue, 06 Oct 2020 10:26:23 GMT

Hi.

1. Your object is much tooooooo big for AutoCAD to handle these data well, impossible!

Please check how long is: 8.74763112405232E+25

2. As i wrote, the data is to big

And if i check the polyline data, i can see 3 doubled vertex..

But i think you have to solve the size problem first, then you can try to "clean" the polyline.

One double is the first and the last vertex, Overkill would work, this is why i know: You never used Overkill to clean this object.

hmm.