Center each window on its point instead of ending it there (pandas' center).
minPeriods?
readonly
number
Present values a window needs. Default: the window size for a number of observations, 1 for a time span.
window
readonly
string | number
Window size: a number of observations, or a time span ('7D', '12h', '30min', '10s', '500ms') over the index values times (ms), counting back from each point (pandas' offset windows, closed on the right).
winType?
readonly
"boxcar" | "triang" | "gaussian"
Weights across a window of observations (pandas' win_type, a scipy window): 'boxcar' (equal), 'triang', or 'gaussian' with std (in functionArgs). Weighted windows take 'mean', 'sum', 'var' and 'std'.