[Gmsh] making an equilateral mesh.

[David Colignon]

Dr Colin J. Cotter wrote:
> Dear Dave,
> 	Thanks for your reply. I'm running Gmsh 2.2 


you should upgrade to the latest 2.4.2 version  :-)


>which complains about the
> "Left" bit (not sure what that does):


see "Transfinite Surface" in  http://www.geuz.org/gmsh/doc/texinfo/gmsh.html#Structured-grids


> Error   : 'equilateral3.geo', line 4 : syntax error (Left)


you can replace

Transfinite Surface {5} Left ;

by

Transfinite Surface {5} = {1,2,4,3} ;


> 
> When I run it in command line mode I get a mesh which is not perfectly
> regular.


What do you mean by "not perfectly regular" ?

Dave


> 
> --cjc
> 
> David Colignon wrote:
>> Hi Colin,
>>
>> what about this ?
>>
>>
>> Point(1) = {0,0,0,0.1};
>> Extrude {1,0,0} {  Point{1}; }
>> Extrude {0.5,0.866025403784,0} { Line{1}; }
>> Transfinite Line { 1 , 2 , 3 , 4 } =  5  ;
>> Transfinite Surface {5} Left ;
>>
>>
>> Cheers,
>>
>> Dave
>>
>