[Gmsh] help with Transfinite Line and 2D mesh nedded

[Maurer, Claudia]

Hi

I do encounter problems when using negative values for my adressed lines with meshing.

p.ex.
Line(4) = {2, 4};
Transfinite Line {-4} = 100Using Progression 2;
will result in an ERROR, while
Transfinite Line {4} = 100Using Progression 2;
will mesh without problem.

In fact the mesh stops and I do not know how to correct it

THAKS a lot for your support

Claudia

nfo    : Meshing 1D...
Info    : Meshing curve 1 (Line)
Info    : Meshing curve 2 (Line)
Info    : Meshing curve 3 (Line)
Info    : Meshing curve 4 (Line)
Info    : Meshing curve 6 (Line)
Info    : Meshing curve 7 (Line)
Info    : Meshing curve 8 (Line)
Info    : Meshing curve 9 (Line)
Info    : Meshing curve 10 (Line)
Info    : Meshing curve 11 (Line)
Info    : Meshing curve 12 (Line)
Info    : Done meshing 1D (0.015625 s)
Info    : Meshing 2D...
Info    : Meshing surface 5 (Ruled surface, Delaunay)
Info    : Meshing surface 9 (Ruled surface, Delaunay)
Info    : Meshing surface 15 (Plane, Delaunay)
Error   : Unable to recover an edge 0 0.0005 && 0 0.0005 (77/98)
Info    : Done meshing 2D (0.755859 s)
Info    : 4543 vertices 9253 elements
Error   : ------------------------------
Error   : Mesh generation error summary
Error   :     0 warnings
Error   :     1 error
Error   : Check the full log for details
Error   : ------------------------------






------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher
Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender),
Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt
------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20150821/ca70b210/attachment.html>