trendSmoothingWindowSize property
Smoothing window size for the trend component.
When a positive value is specified, a center moving average smoothing is applied on the history trend. When the smoothing window is out of the boundary at the beginning or the end of the trend, the first element or the last element is padded to fill the smoothing window before the average is applied.
Implementation
core.String? trendSmoothingWindowSize;