bigframes.pandas.Series.cummax

Series.cummax() → Series

Return cumulative maximum over a DataFrame or Series axis.

Returns a DataFrame or Series of the same size containing the cumulative maximum.

Examples:

>>> s = bpd.Series([2, np.nan, 5, -1, 0])
>>> s
0     2.0
1    <NA>
2     5.0
3    -1.0
4     0.0
dtype: Float64

By default, NA values are ignored.

>>> s.cummax()
0     2.0
1    <NA>
2     5.0
3     5.0
4     5.0
dtype: Float64

Returns:

Return cumulative maximum of scalar or Series.

Return type:

bigframes.pandas.Series