[Gmsh] How to set MSH file format to 2

[Christophe Geuzaine]

> On 24 Mar 2020, at 05:33, Andress <randalandress1507 at comcast.net> wrote:
> 
> Is it possible to set MSH file format to 2 as an option for the later versions (4.5.4) of Gmsh, so that when the .msh is saved from the GUI, it will produce MSH2 instead of MSH4 ascii files?
> 

Sure. With the GUI, select File->Export, enter a .msh filename, then select the format you want in the dropdown menu. Then use File->Save Options as Default. This will save your options in ~/.gmsh-options.

See also FAQ 17 in http://gmsh.info/doc/texinfo/gmsh.html#Mesh-module-questions:

```
How can I save a mesh file with a given (e.g. older) MSH file format version?
		• In the GUI: open ‘File->Export’, enter your filename.msh and then pick the version in the dropdown menu.
		• On the command line: use the -format option (e.g. gmsh file.geo -format msh2 -2).
		• In a .geo script: add the line Mesh.MshFileVersion = x.y; for any version number x.y. You can also save this in your default options.
		• In the API: gmsh::option::setNumber("Mesh.MshFileVersion", x.y).
As an alternative method, you can also not specify the format explicitly, and just choose a filename with the .msh2 or .msh4 extension.
```

Christophe


> Kind regards,
> Randal 
> 
> _______________________________________________
> gmsh mailing list
> gmsh at onelab.info
> http://onelab.info/mailman/listinfo/gmsh

— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine