xarray-contrib / xarray-contrib/cf-xarray
Guess `cell_measures`?
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- Dominant language
- Python
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- 181
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Description
We could automatically assign the cell_measures attribute by looking at variables with standard_name: cell_thickness, cell_area and set these when the dimensions of the metric variable is a subset of a data variable or coordinate variable.
We could add this to a .cf.guess_cf_attributes(cell_measures=True, coord_axis=True) that will replace .cf.guess_coord_axis
Related #200
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading related issue #200 and tracing the existing .cf.guess_coord_axis entry point. Review how standard_name values and variable dimensions are represented, then clarify the replacement API and the subset-matching behavior for cell_thickness and cell_area. Done means the proposed cell_measures and coord_axis guessing behavior is implemented and covered by tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- data, tooling
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100