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ENH: Arithmetic operations on intervals

See original GitHub issue

Is your feature request related to a problem?

I would like to be able to do arithmetic operations on intervals:

a + b: pd.Interval(3, 6) + pd.Interval(5, 7) == pd.Interval(3, 7)
a - b: pd.Interval(3, 6) - pd.Interval(5, 7) == pd.Interval(3, 5)

[a, b].union() / np.sum([a, b]):

intervals = pd.arrays.IntervalArray.from_tuples([(0, 1), (1, 3), (2, 4), (5, 7)])
intervals.sum() == pd.arrays.IntervalArray.from_tuples([(0, 4), (5, 7)])

API breaking implications

None AFAIK, since those methods are not implemented yet

Issue Analytics

State:
Created 2 years ago
Reactions:2
Comments:5 (4 by maintainers)

Top GitHub Comments

2reactions

venaturumcommented, Oct 9, 2021

@Hoeze I’ve taken the above concepts with staircase and created a new package “piso” for set operations over pandas.Interval, pandas.arrays.IntervalArray and pandas.IntervalIndex.

https://piso.readthedocs.io

It’s currently available through pypi. Will continue to expand the functionality over the coming weeks.

2reactions

venaturumcommented, Sep 18, 2021

@Hoeze I developed a package called staircase which allows a lot of manipulations with intervals and is designed to be closely aligned with pandas. You may find it handy? www.staircase.dev

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