pandas.CategoricalIndex

class pandas.CategoricalIndex

Immutable Index implementing an ordered, sliceable set. CategoricalIndex represents a sparsely populated Index with an underlying Categorical.

New in version 0.16.1.

Parameters:

data : array-like or Categorical, (1-dimensional)

categories : optional, array-like

categories for the CategoricalIndex

ordered : boolean,

designating if the categories are ordered

copy : bool

Make a copy of input ndarray

name : object

Name to be stored in the index

Attributes

T return the transpose, which is by definition self
asi8
base return the base object if the memory of the underlying data is shared
categories
codes
data return the data pointer of the underlying data
dtype
dtype_str
flags
has_duplicates
hasnans
inferred_type
is_all_dates
is_monotonic alias for is_monotonic_increasing (deprecated)
is_monotonic_decreasing return if the index is monotonic decreasing (only equal or
is_monotonic_increasing return if the index is monotonic increasing (only equal or
is_unique
itemsize return the size of the dtype of the item of the underlying data
name
names
nbytes return the number of bytes in the underlying data
ndim return the number of dimensions of the underlying data, by definition 1
nlevels
ordered
shape return a tuple of the shape of the underlying data
size return the number of elements in the underlying data
strides return the strides of the underlying data
values return the underlying data, which is a Categorical

Methods