Inference verification plot

[clechartre]

Purpose

Implements an extra-feature of the vis module to perform standalone plotting of the predictions. This allows for the verification of the inference output which outputs a Numpy array (see PR#13). Users can specify file path for saving and the channel (variable and level) to be plotted over the time range available in the inference output.

Code changes:

• vis.py: Addition of the standalone function verify_inference, described in the purpose section of this description

• weather_dataset.py: Addition of a split and specific datatype called "verification" which handles a numpy array instead of .zarr files, the current datatype supported by the model. The file is loaded as such, and, since it is backtransformed before storage, no specific transformation of the file is needed to pre-process it before plotting.

• cli_plotting.py: Creation of a command line entry point to run the plotting on inference data as a standalone

• README.md: adapted the readme according to this new functionality

Checklist

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• You have followed the coding standards guidelines established at Code Review Checklist.
• Docstrings and type hints are added to new and updated routines, as appropriate
• All relevant documentation has been updated or added (e.g. README)

Review

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[sadamov]

Thanks! This will be very useful when plotting/evaluating various input formats in a standalone script. The two comments wrt 23 and 42 should be adressed before merge.
I think this PR would benefit from an additional script (slurm, CLI) for the user to interact with the standalone plotting. Some guidance on how to use it should then be added to the README. Would you have time to add such functionality?

[sadamov]

Looks good! I made some smaller changes, as the code was not running on Balfrin initially. Please review my changes and if you agree squash commits and merge PR.
Thanks 🙏