Description Usage Arguments Value Author(s) References Examples
Decompose a vector into frequency components
1  tsdecomp(x, breaks)

x 
a numeric vector with no missing data 
breaks 
a numeric constant or a vector of break points into which

A matrix with dimension n x m where n is the length of x
and m
is the number of break categories.
Original by Aidan McDermott; revised by Roger Peng [email protected]
Dominici FD, McDermott A, Zeger SL, Samet JM (2003). “Airborne particulate matter and mortality: Timescale effects in four US cities”, American Journal of Epidemiology, 157 (12), 1055–1065.
1 2 3 4 5 6 7 8  x < rnorm(101)
freq.x < tsdecomp(x, c(1, 10, 30, 80))
## decompose x into 3 frequency categories.
## x[,1] represents from 1 to 9 cycles in 101 data points
## x[,2] represents from 10 to 29 cycles in 101 data points
## x[,3] represents from 30 to 50 cycles in 101 data points
## you can only have up to 50 cycles in 101 data points.

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