[Gmsh] finding problem defining Ruled surface

[Osman Amin]

Hello Mr. Artemiev, 
Thank you very much for your solution. It worked fine. I am really grateful to you. 
If you don't mind I would like to ask you another question, that is - whether it is possible to define Line Loops using Spline/Bspline curves which makes a surface with more than 4 edges. I am willing to make a 3D grid around a NURBS surface (in .igs format) which is made up of several surfaces defined by BSpline curves. I am trying to make those surfaces Transfinite and after making those transfinite I am hoping to extrude those surfaces so that it makes a 3d grid. But I am finding it difficult to define those NURBS surface components into Transfinite surfaces (I am trying to make structured grid). 
I am sorry that I had asked a lot. It would really be a great help to me if you give me a clue on this matter. 

Thanking you again, 
with regards, 
Amin
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20110708/39fd0faf/attachment.html>