convert to matplotx from dufte, fixes #118

[graysky2]

I am not python-savvy by any means but I think this does the job. Build environment for me was having python-matplotx substituting in for python-dufte (all other depds/makedeps on board).

• graphs a file correctly ie stressberry-plot -o caseless2.png -f -l 200 2200 -t 20 90 fan.dat gives the expected plot.
• passes tests

  
  % mkdir -p temp
  % site_packages=$(python -c "import site; print(site.getsitepackages()[0])")
  % python -m install --optimize=1 --destdir=temp dist/*.whl
  %PATH="$PWD/temp/usr/bin:$PATH" PYTHONPATH="$PWD/temp/$site_packages" python -m pytest
  ['/usr/lib/python3.9/site-packages/install/_vendor/installer/src', '/scratch/stressberry/src/stressberry-0.3.3', '/usr/lib/python39.zip', '/usr/lib/python3.9', '/usr/lib/python3.9/lib-dynload', '/usr/lib/python3.9/site-packages']
  Listing '.install-cache/pkg'...
  Listing '.install-cache/pkg/stressberry'...
  Compiling '.install-cache/pkg/stressberry/__about__.py'...
  Compiling '.install-cache/pkg/stressberry/__init__.py'...
  Listing '.install-cache/pkg/stressberry/cli'...
  Compiling '.install-cache/pkg/stressberry/cli/__init__.py'...
  Compiling '.install-cache/pkg/stressberry/cli/helpers.py'...
  Compiling '.install-cache/pkg/stressberry/cli/plot.py'...
  Compiling '.install-cache/pkg/stressberry/cli/run.py'...
  Compiling '.install-cache/pkg/stressberry/main.py'...
  Listing '.install-cache/pkg/stressberry-0.3.3.dist-info'...
  ===================================================== test session starts ======================================================
  platform linux -- Python 3.9.9, pytest-6.2.5, py-1.10.0, pluggy-0.13.1
  rootdir: /scratch/stressberry/src/stressberry-0.3.3
  collected 2 items                                                                                                              

test/test_cli.py . [ 50%] test/test_stressberry.py . [100%]

====================================================== 2 passed in 27.55s ======================================================

[nschloe]

• matplotx should be added to setup.cfg
• instead of plt.legend() use, matplotx.line_labels().

[nschloe]

dufte needs to be removed from setup.py, too. Can you also bump the Python requirements to 3.7 in the same file and in .github/workflow/ci.yml?

[graysky2]

Sure, see latest

[nschloe]

remove Programming Language :: Python :: 3.6

[shortbloke]

This PR doesn't completely replace the changes I proposed in #111 as that also added back capabilities to:

• Hide the legend
• Adjust the line width
• Use a style that was more appropriate for those with color vision impairments.

Is the "fixes nschloe#111" incorrect and should be relating to a different issue?

[graysky2]

@shortbloke -

Is the "fixes #111" incorrect and should be relating to a different issue?

That is in reference to https://github.com/nschloe/stressberry/issues/118 ... typo now corrected

EDIT: I always thought Issues were just referenced by <number sign/number> whereas pull requests were referenced by <PR/number sign/number> but perhaps I am wrong.

[nschloe]

Thanks!