Performs an N-point moving minimum calculation.
MOVMIN(series, N)
series |
- |
A series or table. |
N |
- |
An integer, the number of points on which to calculate the minimum. |
A series or table.
W1: {2,3,1,5,2,4,5,7,2}
W2: movmin(W1, 4)
returns the series: {2,2,1,1,1,1,2,2,2}.
In this example where there is a 4-point sliding window in which the minimum is calculated, the first 3 points in the returned series are the minima from a 2, and 3 point window respectively.
decimate(movmin(W1,10), 10)
calculates the 10 point moving minimum of non-overlapping blocks.
The first N-1 points returned for MOVMIN over an N-point window are the minimum values in consecutively larger windows of size 1, 2, 3, ... , N-1.
See BLOCKMIN to compute the minimum of non-overlapping blocks.