Hi Jinghua,

You should not connect the rings in the two planes. Just draw two separate rings or curves. I use the place markers while dragging setting. It will automatically close a loop when you get near the start point. If you don't want closed loops then clear the selection before drawing a second curve so the two curves won't be connected.

Tom

-------- Original Message --------
Subject: Re: [Chimera-users] how to create surface from volume tracer path
From: jinghua
To: Tom Goddard
Date: 10/21/09 12:28 PM

hi Tom,

Thank you so much for your reply. Have fun in France!

I have tried several different build of chimera with the same result
as attached. What are your mouse options during tracing? Is there
special sequence to go from one plane to the next plane?

Best wishes,

Jinghua

On Wed, 21 Oct 2009, Tom Goddard wrote:

Hi Jinghua,

The volume tracer capability to stitch loops drawn in parallel planes to form tube surfaces uses some strange heuristics that don't always produce a good result. I'd have to see the case where you have trouble to understand it. I just tried making a tube, see attached photo, and it worked ok in a Chimera daily build from a few days ago.

I am at a workshop until the middle of next week so may not reply to email for a while.

Tom

-------- Original Message --------
Subject: [Chimera-users] how to create surface from volume tracer path
From: jinghua
To: chimera-users
Date: 10/21/09 10:48 AM

   When I try to create a tube by tracing two planes, the surface it
   makes is more like a cone. Do I need connect all the markers from two
   different planes?

   Thank you for your help!

   Jinghua