invalid mesh version

[Mahmood Naderan]

Hi,

I have saved a msh file with gmsh-4.4.1, however, the import command fails with invalid mesh version.

pyfr import ~/Downloads/gmsh-4.4.1-Linux64/share/doc/gmsh/demos/untitled.msh untitiled.pyfrm
Traceback (most recent call last):
  File "/home/mahmood/.local/bin/pyfr", line 11, in <module>
    load_entry_point('pyfr==1.8.5', 'console_scripts', 'pyfr')()
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/__main__.py", line 110, in main
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/__main__.py", line 121, in process_import
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/readers/__init__.py", line 19, in get_reader_by_extn
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/readers/gmsh.py", line 89, in __init__
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/readers/gmsh.py", line 110, in _read_mesh_format
ValueError: Invalid mesh version

Any idea to fix that?

Regards,
Mahmood

[Junting Chen]

I always saved mesh file in GMSH version 2 ascii format (it always asks you when you click the save button, maybe there is a way to do that in command lines). As description in the latest PyFR (1.8.5) says, GMSH version 4 should be supported. I'm being lazy didn't update pyfr yet.

Junting Chen

[Freddie Witherden]

Hi,

On 29/09/2019 08:24, Mahmood Naderan wrote:
> I have saved a msh file with gmsh-4.4.1, however, the import command
> fails with invalid mesh version.

Would you be able to provide us with the first few kilobytes of the mesh
you are trying to import (we do not need/want the entire mesh, just the
first few bytes with include the mesh version string).

Regards, Freddie.

[Mahmood Naderan]

Using GUI and export section, I saved with "Version 2 ASCII", However, it fails with another error

$ pyfr import untitled.msh untitled.pyfrm

Traceback (most recent call last):
  File "/home/mahmood/.local/bin/pyfr", line 11, in <module>
    load_entry_point('pyfr==1.8.5', 'console_scripts', 'pyfr')()
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/__main__.py", line 110, in main
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/__main__.py", line 121, in process_import
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/readers/__init__.py", line 19, in get_reader_by_extn
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/readers/gmsh.py", line 89, in __init__

  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/readers/gmsh.py", line 215, in _read_eles
  File "/home/mahmood/.local/lib/python3.6/site-packages/pyfr-1.8.5-py3.6.egg/pyfr/readers/gmsh.py", line 227, in _read_eles_impl_v2
ValueError: Unsupported element type 15
$ head -n 15 untitled.msh
$MeshFormat
2.2 0 8
$EndMeshFormat
$ParametricNodes
67968
1 -1 -0 0 0 1
2 -1 0.2 0 0 2
3 -1.2 0 0 0 3
4 -1 -0.2 0 0 4
5 -0.8 0 0 0 5
6 -1 0.3 0 0 6
7 -1.3 0 0 0 7
8 -1 -0.3 0 0 8
9 -0.7 0 0 0 9
10 -1 0.4 0 0 10

Regards,
Mahmood

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