In particular, add each artist directly to its own axes, instead of shifting each of them by some offset and grouping all of them together in a PatchCollection. Note that this makes the example no longer showcase the use of PatchCollection, but at least based on the docstring that was not the intent of the example anyways, and PatchCollection is showcased elsewhere (in the patch_collection.py example, in particular).

PR Summary

PR Checklist

Documentation and Tests

• Has pytest style unit tests (and pytest passes)
• Documentation is sphinx and numpydoc compliant (the docs should build without error).
• New plotting related features are documented with examples.

Release Notes

• New features are marked with a .. versionadded:: directive in the docstring and documented in doc/users/next_whats_new/
• API changes are marked with a .. versionchanged:: directive in the docstring and documented in doc/api/next_api_changes/
• Release notes conform with instructions in next_whats_new/README.rst or next_api_changes/README.rst