[Mesa-users] History format

[Francis Timmes]

nice. thanks warick!

fxt




> On Oct 8, 2019, at 1:31 PM, Warrick Ball via Mesa-users <mesa-users at lists.mesastar.org> wrote:
> 
> Hi Bergerson,
> 
> I don't think MESA offers controls to do this but it shouldn't be difficult to edit the file afterwards using standard tools. e.g. The most natural to me would be to use `sed`.  I just found that this works:
> 
>    sed -e '1,5d' -e 's/\s\+/,/g' -e 's/^,//' history.data > history.csv
> 
> assuming you want the column names but not the global data.  Here's what each piece of the `sed` command does:
> 
> - 1,5d: deletes lines 1 to 5
> - s/\s\+/,/g: replaces all instances of one or more whitespaces (\s\+) with a comma on each line
> - s/^,//: replace a comma at the start of a line with nothing.
> 
> MESA histories and profiles are easy to read with Python.  The data for each point in the track can be loaded in Python using NumPy with something like
> 
>    import numpy as np
>    history = np.genfromtxt('history.data', skip_header=5, dtype=None, names=True)
> 
> and then saved with something like
> 
>    np.savetxt('history.csv', history, delimiter=',', header=','.join(history.dtype.names))
> 
> although I think everything is converted to floats and the header line has a leading #.
> 
> You can probably use Pandas for more control over the CSV output, maybe by casting `history` as a Pandas DataFrame and using the `to_csv` function.
> 
> Finally, you could even just use Python to do something like the `sed` I started with:
> 
>    with open('history.data', 'r') as f:
>        lines = f.readlines()
> 
>    with open('history.csv', 'w') as f:
>        f.write('\n'.join([','.join(line.split()) for line in lines[5:]]))
> 
> Cheers,
> Warrick
> 
> 
> ------------
> Warrick Ball
> Postdoc, School of Physics and Astronomy
> University of Birmingham, Edgbaston, Birmingham B15 2TT
> W.H.Ball at bham.ac.uk
> +44 (0)121 414 4552
> 
> 
> On Tue, 8 Oct 2019, mesa-users at lists.mesastar.org wrote:
> 
>> Hi everyone!
>> I have one question about format in my file history.data. Can I save it (history) in .csv format? I saw how I can save this file in txt, but at moment, I need my history in .csv.
>> Thanks,
>> Bergerson Van Hallen
>> Bergerson Van Hallen Vieira da SilvaPrograma de Pós Graduação em Física - Doutorado
>> Universidade Estadual de Ponta Grossa
>> Av. Carlos Cavalcanti, 4748 - Campus Uvaranas
>> CEP 84030-900, Ponta Grossa, Paraná, Brasil
>> Contato: + 55 44 98822 8987
>> e-mail: bgerso at hotmail.com
>> 
> _______________________________________________
> mesa-users at lists.mesastar.org
> https://lists.mesastar.org/mailman/listinfo/mesa-users
>