Writing a .nas mesh file

[scdivi]

I have a triangulated information, i.e., vertices (1500 x 3) and faces (2430 x 3). I am trying to write a .nas file using meshio v5.3.4 as following:

msh = meshio.Mesh(vertices, [("triangle", faces)])
msh.write(fname+'.nas')

However, I get an assertion error as:

File "python_package_path\meshio\nastran\_nastran.py", line 415, in _float_to_nastran_string
    assert len(out) <= 16
AssertionError

I am unable to breakdown what is the cause of this error. Can anyone please help me understand it?

Thanks in advance!
Sai

[nickvazz]

@scdivi @nschloe
Found by changing

meshio/src/meshio/nastran/_nastran.py

Line 413 in b2ee998

out = np.format_float_scientific(value, exp_digits=1, precision=11).replace(

to

    out = np.format_float_scientific(value, exp_digits=1, precision=9).replace(

seemed to fix the problem