Write selected channels during inference

[sbAsma]

Description (Edited)

Changes in config/default_config.yml:

Added a new filed in output to filter channels.

Changes in src/weathergen/utils/validation_io.py

Filtering of the channels

To run with:

uv run --offline inference --from-run-id $run_id --options test_config.samples_per_mini_epoch=1 validation_config.output.channels.ERA5=["2t"] validation_config.output.num_samples=1

The output zarr file has the tree:

>>> print(root.tree())

/
└── 0
    └── ERA5
        ├── 0
        │   └── source
        │       ├── coords (40320, 2) float32
        │       ├── data (40320, 71) float32
        │       ├── geoinfo (40320, 0) float32
        │       └── times (40320,) datetime64
        ├── 1
        │   ├── prediction
        │   │   ├── coords (40320, 2) float32
        │   │   ├── data (40320, 1, 1) float32
        │   │   ├── geoinfo (40320, 0) float32
        │   │   └── times (40320,) datetime64
        │   └── target
        │       ├── coords (40320, 2) float32
        │       ├── data (40320, 1) float32
        │       ├── geoinfo (40320, 0) float32
        │       └── times (40320,) datetime64
        └── 2
            ├── prediction
            │   ├── coords (40320, 2) float32
            │   ├── data (40320, 1, 1) float32
            │   ├── geoinfo (40320, 0) float32
            │   └── times (40320,) datetime64
            └── target
                ├── coords (40320, 2) float32
                ├── data (40320, 1) float32
                ├── geoinfo (40320, 0) float32
                └── times (40320,) datetime64

>>> print(dict(root["0"]["ERA5"]["1"]["target"].attrs))
{'channels': ['2t'], 'geoinfo_channels': [], 'source_interval': {'start': '2023-10-01T00:00:00.000000000', 'end': '2023-10-01T06:00:00.000000000'}}

Issue Number

Closes ecmwf#1705

Checklist before asking for review

• I have performed a self-review of my code
• My changes comply with basic sanity checks:
  • I have fixed formatting issues with ./scripts/actions.sh lint
  • I have run unit tests with ./scripts/actions.sh unit-test
  • I have documented my code and I have updated the docstrings.
  • I have added unit tests, if relevant
• I have tried my changes with data and code:
  • I have run the integration tests with ./scripts/actions.sh integration-test
  • (bigger changes) I have run a full training and I have written in the comment the run_id(s): launch-slurm.py --time 60
  • (bigger changes and experiments) I have shared a hegdedoc in the github issue with all the configurations and runs for this experiments
• I have informed and aligned with people impacted by my change:
  • for config changes: the MatterMost channels and/or a design doc
  • for changes of dependencies: the MatterMost software development channel