polars.Expr.rolling_max

Expr.rolling_max(window_size: int, weights: Optional[List[float]] = None, min_periods: Optional[int] = None, center: bool = False) polars.internals.expr.Expr

Apply a rolling max (moving max) over the values in this array. A window of length window_size will traverse the array. The values that fill this window will (optionally) be multiplied with the weights given by the weight vector. The resulting values will be aggregated to their sum.

Parameters
window_size

The length of the window.

weights

An optional slice with the same length as the window that will be multiplied elementwise with the values in the window.

min_periods

The number of values in the window that should be non-null before computing a result. If None, it will be set equal to window size.

center

Set the labels at the center of the window