> On 28 Oct 2019, at 18:28, Baptiste DURAND <[email protected]> wrote:
>
> Dear Christophe,
>
> Thank you for your assistance.
>
> I have downloaded the last snapshot of the SDK from http://gmsh.info/
> (downloaded file : http://gmsh.info/bin/Linux/gmsh-git-Linux64-sdk.tgz),
> extracted the files from the archive and copy the folder gmsh-git-Linux64-sdk
> to the python3.6/site-package repository.
> The segmentation fault no longer occurs when the demo script t1.py is
> running. Good news!
>
Ok, great.
> Regarding the second mistake, I think I have gotten rid of it after an extra
> operation.
> In the Ubuntu settings, I set the regional format to "English (United
> Kingdom)" ("Display numbers, dates and currency amounts in the usual format
> for: " in the package Language Support).
> Previously, the choice was "Français". I thought I had already deleted this
> trace of French settings.
>
Ok.
> To conclude, I should use this snapshot of the SDK and then version 4.5 when
> it will be released, is that correct?
>
Correct !
Christophe
>
> Best regards,
>
> Baptiste Durand
>
> ---
> Baptiste Durand
> Doctorant – Laboratoire Navier
> [email protected] – 01 64 15 37 21 (06 58 88 05 41) –
> linkedin.com/in/baptistedurand
>
> De: [email protected]
> À: "Baptiste DURAND" <[email protected]>
> Cc: [email protected]
> Envoyé: Vendredi 25 Octobre 2019 13:33:46
> Objet: Re: [Gmsh] Gmsh Pyhon API + matplotlib cause unreadable msh files and
> Segmentation fault
>
> Can you try a recent snapshot of the SDK and let us know if it fixes the
> issue (which IIRC was due to statically linking the standard C++ lib)?
>
> Thanks,
>
> Christophe
>
>
> Le 25 oct. 2019 à 12:30, Baptiste DURAND <[email protected]> a écrit :
>
>
> Dear all,
>
> I'm used to using gmsh through the python API, on Ubuntu 18.04.
> With the version 4.4 of gmsh, I am faced with an unwanted behaviour when I
> try to import both gmsh and matplotlib into the same script.
>
> Firstly, if matplotlib is imported before gmsh, a Segmentation fault error
> occurs.
> Steps to reproduce this :
> • Create a new virtual environment :
> • Activate this environment :
> • Install wheels : pip3 install wheels
> • Install gmsh python API using the gmsh-sdk package on pypi.org : pip3
> install gmsh-sdk
> • Install the matplotlib package : pip3 install matplotlib
> • Add the line "import matplotlib" before "import gmsh" in the demo
> script t1.py
> • Run this demo script in the virtual environment : python3 t1.py
> This results in : Segmentation fault (core dumped)
> If matplotlib is not imported or is imported after gmsh this segmentation
> fault doesn't occur.
>
>
> In addition, if include-system-site-packages is set to true in the
> configuration file of the virtual environment (pyvenv.cfg) another problem
> appears.
> I need this setting because I would like to use the FEniCS finite element
> code and it cannot be installed inside a virtual environment.
> Even if matplotlib is imported after gmsh, the resulting mesh file is
> unreadable because the decimal separator is a comma.
>
>
> Has anyone faced a similar issue ?
>
>
> Best regards,
>
> Baptiste Durand
>
> ---
> Baptiste Durand
> Doctorant – Laboratoire Navier
> [email protected] – 01 64 15 37 21 (06 58 88 05 41) –
> linkedin.com/in/baptistedurand
> <t1_with_matplotlib.py>
> _______________________________________________
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>
—
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine
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