Add "unique()" method, mimicking pandas
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enhancement
- Dominant language
- Python
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- Avg merge
- 2d 15h
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Description
Would it be good to add a unique() method that mimics pandas?
import pandas as pd
import xarray as xr
pd.Series([0, 1, 1, 2]).unique()
xr.DataArray([0, 1, 1, 2]).unique() # not implemented
Output:
array([0, 1, 2])
AttributeError: 'DataArray' object has no attribute 'unique'
Contributor guide
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 the DataArray API and comparing the pandas Series.unique() example in this issue with existing xarray array operations. Define the expected result from the supplied example and verify that the new DataArray method returns the unique values without changing their order.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- pandas, python
- Domain
- data
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100