BLOCKMAX

Purpose:

Computes a non-overlapping block maximum of a series.

BLOCKMAX(series, N)

series	-	A series or table.
N	-	An integer, the points per block to calculate the maximum as the series is processed.

A series or table, the N-point block maximum.

W1: 1..12

W2: blockmax(W1, 2)

W2 == {2, 4, 6, 8, 10, 12}

W1: 1..12

W2: blockmax(W1, 3)

W2 == {3, 6, 9, 12}

BLOCKMAX computes the N-point non-overlapping block maximum of a series by decimating the standard N-point moving maximum.

If the block size is not an integral fraction of the series length, the end points are not processed.