Pandas DataFrame - expanding() function
DataFrame - expanding() function
The expanding() function is used to provide expanding transformations.
Syntax:
DataFrame.expanding(self, min_periods=1, center=False, axis=0)
Parameters:
| Name | Description | Type/Default Value | Required / Optional |
|---|---|---|---|
| min_periods | Minimum number of observations in window required to have a value (otherwise result is NA). | int Default Value: 1 |
Required |
| center | Set the labels at the center of the window. | bool Default Value: False |
Required |
| axis | int or str Default Value: 0 |
Required |
Returns: a Window sub-classed for the particular operation
Notes:
By default, the result is set to the right edge of the window. This can be changed to the center of the window by setting center=True.
Example:
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