pandas.cut¶
- pandas.cut(x, bins, right=True, labels=None, retbins=False, precision=3, include_lowest=False)¶
Return indices of half-open bins to which each value of x belongs.
Parameters : x : array-like
Input array to be binned. It has to be 1-dimensional.
bins : int or sequence of scalars
If bins is an int, it defines the number of equal-width bins in the range of x. However, in this case, the range of x is extended by .1% on each side to include the min or max values of x. If bins is a sequence it defines the bin edges allowing for non-uniform bin width. No extension of the range of x is done in this case.
right : bool, optional
Indicates whether the bins include the rightmost edge or not. If right == True (the default), then the bins [1,2,3,4] indicate (1,2], (2,3], (3,4].
labels : array or boolean, default None
Labels to use for bin edges, or False to return integer bin labels
retbins : bool, optional
Whether to return the bins or not. Can be useful if bins is given as a scalar.
Returns : out : Categorical or array of integers if labels is False
bins : ndarray of floats
Returned only if retbins is True.
Notes
The cut function can be useful for going from a continuous variable to a categorical variable. For example, cut could convert ages to groups of age ranges.
Any NA values will be NA in the result. Out of bounds values will be NA in the resulting Categorical object
Examples
>>> cut(np.array([.2, 1.4, 2.5, 6.2, 9.7, 2.1]), 3, retbins=True) (array([(0.191, 3.367], (0.191, 3.367], (0.191, 3.367], (3.367, 6.533], (6.533, 9.7], (0.191, 3.367]], dtype=object), array([ 0.1905 , 3.36666667, 6.53333333, 9.7 ])) >>> cut(np.ones(5), 4, labels=False) array([2, 2, 2, 2, 2])