COMPUTE QUANTILE

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COMPUTE QUANTILE

            [SIC\]COMPUTE OutVar QUANTILE InVar

        Compute  the  k-quantiles (i.e. the k-1 values which split the data in k
        subsets of equal or almost-equal sizes) of the InVar  array  in  OutVar.
        For  convenience  the  0-th (minimum value) and the k-th (maximum value)
        quantiles of the InVar array are also computed.

        OutVar must be an array of shape [...,k+1]. The leading  dimensions,  if
        any, must match the leading dimensions of the InVar array.

        In practice this means:
        - the median (2-quantile) needs k+1=3 (return min, median, max),
        - the quartiles need k+1=5,
        and so on.