Maximum minus minimum in a full period ending at the current bar. Repeated
extremes do not change the result. Warmup is NaN. Missing values propagate
by default; skip collects period finite observations and holds across gaps.
Invalid periods throw RangeError; unknown missing policies throw TypeError.
Maximum minus minimum in a full period ending at the current bar. Repeated extremes do not change the result. Warmup is NaN. Missing values propagate by default;
skipcollects period finite observations and holds across gaps. Invalid periods throw RangeError; unknown missing policies throw TypeError.