colab and /tmp

[mariosgeo]

Problem description

/tmp mesh files are not found

Your environment

Please provide the output of print(pygimli.Report()) here. If that does not
work, please give provide some additional information on your:

Operating system: e.g. Colab
Python version: 3.10,
pyGIMLi version: 1.5.1
Way of installation: pip.

from pygimli.physics import ert
import pygimli as pg
import pygimli.meshtools as mt

data=ert.load('trial4.pyg')
plc = mt.createParaMeshPLC3D(data, paraDepth=-1, paraMaxCellSize=00.0,
                             surfaceMeshQuality=34)
mesh = mt.createMesh(plc, quality=1.3)

...

Expected behavior

Make a mesh

Actual behavior

I think the tempfile directory is different in colab and local installs. Is there any flag we can save the tempfiles to e.g. googledrive install of /tmp?. The mesh is created when run locally.

[/usr/local/lib/python3.10/dist-packages/pygimli/meshtools/mesh.py](https://localhost:8080/#) in readTetgen(fName, comment, verbose, defaultCellMarker, loadFaces, quadratic)
    961 
    962     # Part 1/3: Nodes, essential
--> 963     with open(fName + '.node', 'r') as node_in:
    964         node_lines = pg.utils.filterLinesByCommentStr(node_in.readlines(),
    965                                                       comment)

FileNotFoundError: [Errno 2] No such file or directory: '/tmp/tmpqu_t6iw8-1.node'

[mariosgeo]

follow up.
The .poly files are on the /tmp folder. Not the .node ones

[halbmy]

It seems like instead of the command-line based tetgen the installed pacakge is a wrapper for connecting pyVista: https://pypi.org/project/tetgen/

[halbmy]

We would have to change things to work with that. However, I am not sure about potential licensing issues as tetgen was always kind of restrictive.

[halbmy]

Sorry for the late response. We could of course allow a keyword argument with a (e.g. local) filename taken instead of the default tmpfile as a workaround.

[mary-tsekhmistrenko]

I get the same error message for the example script plot_05_refraction_3D.ipynb, but I am not using Colab. Is there a quick workaround we can do ourselves for this?

Here is my environment information:
OS : Darwin (macOS 14.2.1)
CPU(s) : 12
Machine : arm64
Architecture : 64bit
RAM : 16.0 GiB
Environment : Jupyter
File system : apfs

Python 3.11.9 packaged by conda-forge
pygimli : 1.5.0
pgcore : 1.5.0
numpy : 1.26.4
matplotlib : 3.7.3
scipy : 1.14.1
IPython : 8.26.0
pyvista : 0.44.1

[halbmy]

you should be able to set the environment variable TMPDIR to a place where you have writing rights