Rolling median, averaging the middle pair for even periods. Uses a full
period including the current bar, with NaN until ready. Missing values
propagate by default; skip collects period finite observations and holds
across gaps. Equal values retain their multiplicity. Invalid periods throw
RangeError; an unknown missing policy throws TypeError.
Rolling median, averaging the middle pair for even periods. Uses a full period including the current bar, with NaN until ready. Missing values propagate by default;
skipcollects period finite observations and holds across gaps. Equal values retain their multiplicity. Invalid periods throw RangeError; an unknown missing policy throws TypeError.