pandas.IntervalIndex

class pandas.IntervalIndex [source]

Immutable Index implementing an ordered, sliceable set. IntervalIndex represents an Index of Interval objects that are all closed on the same side.

New in version 0.20.0.

Warning

The indexing behaviors are provisional and may change in a future version of pandas.

Parameters:

data : array-like (1-dimensional) Array-like containing Interval objects from which to build the IntervalIndex closed : {‘left’, ‘right’, ‘both’, ‘neither’}, default ‘right’ Whether the intervals are closed on the left-side, right-side, both or neither. name : object, optional Name to be stored in the index. copy : boolean, default False Copy the meta-data dtype : dtype or None, default None If None, dtype will be inferred New in version 0.23.0.

See also

Index

The base pandas Index type

Interval

A bounded slice-like interval; the elements of an IntervalIndex

interval_range

Function to create a fixed frequency IntervalIndex

cut, qcut

Notes

See the user guide for more.

Examples

A new IntervalIndex is typically constructed using interval_range():

>>> pd.interval_range(start=0, end=5)
IntervalIndex([(0, 1], (1, 2], (2, 3], (3, 4], (4, 5]]
              closed='right', dtype='interval[int64]')

It may also be constructed using one of the constructor methods: IntervalIndex.from_arrays(), IntervalIndex.from_breaks(), and IntervalIndex.from_tuples().

See further examples in the doc strings of interval_range and the mentioned constructor methods.

Attributes

closed	Whether the intervals are closed on the left-side, right-side, both or neither
is_non_overlapping_monotonic	Return True if the IntervalIndex is non-overlapping (no Intervals share points) and is either monotonic increasing or monotonic decreasing, else False
left	Return the left endpoints of each Interval in the IntervalIndex as an Index
length	Return an Index with entries denoting the length of each Interval in the IntervalIndex
mid	Return the midpoint of each Interval in the IntervalIndex as an Index
right	Return the right endpoints of each Interval in the IntervalIndex as an Index
values	Return the IntervalIndex’s data as a numpy array of Interval objects (with dtype=’object’)

Methods

contains(key)	Return a boolean indicating if the key is IN the index
from_arrays(left, right[, closed, name, …])	Construct from two arrays defining the left and right bounds.
from_breaks(breaks[, closed, name, copy, dtype])	Construct an IntervalIndex from an array of splits
from_tuples(data[, closed, name, copy, dtype])	Construct an IntervalIndex from a list/array of tuples
get_indexer(target[, method, limit, tolerance])	Compute indexer and mask for new index given the current index.
get_loc(key[, method])	Get integer location, slice or boolean mask for requested label.