Exploding featurelines to 3D Polylines

[jeff_rivers]

I have several featurelines that I wish to explode to be 3D Polylines (bad, I know, but it's a test for a way to get data across from our design group to our survey group). 

Last week, in this drawing, I exploded a large selection of featurelines and they all became 3D polylines, preserving their elevation data. This week, I drew an additional set of featurelines in the same drawing.  When I explode them once, they lose all elevation data, becoming lpolylines at z=0.  Additionally, the Prospector shows me several errors: "breaklines not added to surface" or something similar.  Which is an odd result for the explode command. 

What am I doing wrong?  Why did this work once but not a second time?

[Karsten.Saenger]

If it worked the first time and a second time on different data it does not work something has changed or the data is not the same. Have you tested a second time on the data that does not work and on a different computer?
Is it possible to attach the drawing?
In general: When exploding 3D feature lines you should get 3D polylines.

[jeff_rivers]

Thanks, that's what I thought too: Featurelines explode to 3D Polylines.

A co-worker just tried in a new, empty drawing not associated with a project.  He created a featureline with three vertices, with elevations 1, 2, and 3 respectively.  Exploded it once.  It turned into a polyline with all elevations at zero.

I did a similar test, but saved my drawing to an existing project first.  Created a featureline with four vertexes, all with different elevations.  Exploded it.  Now it's a polyline at z=0.

[jeff_rivers]

We've done more testing, and we have narrowed it down to the site.

Featurelines created in 'Site 1' explode to zero-elevation polylines.

Featurelines created in any other, new site explode correctly.

[AllenJessup]

How are your Site Properties set?

Allen

[jmayo-EE]

Check your site's properties, 3D geometry tab and see if you are set to "Use Elevation".

[jmayo-EE]

For the second time today,

😮

🙂

[jmayo-EE]

"Featurelines explode to 3D Polylines"

Note that this is partially true. FLines explode to 3d polys only if z varies. If z is constant explode will always return an LWpolyline.

[AllenJessup]

If Site Properties is the answer and it happens in all drawings. You'll have to change it in your template.

Allen

[jeff_rivers]

Great!  Thanks guys. 

P.s. to AutoDesk- THIS WOULD BE HANDY TO MENTION IN THE HELP FILE SECTION ON FEATURELINES!

[joantopo]

Are you using "xplode" command  to get polyline from feature line?  

Because I´m trying with this command and I get "invalid object".

[Jeff_M]

Use Explode, not Xplode