Find Maxima and Minima
Search for Extrema along time series
hilow(y)
y |
time series |
LIST:
hi |
indexes to peaks |
lo |
indexes to valleys |
Jonathan M. Lees<jonathan.lees.edu>
peaks
ex <- seq(from=0, to=4*pi, length = 200) y <- sin(ex) plot(ex, y, type='l') peakval <- hilow(y) abline(v=ex[peakval$hi], col='green') abline(v=ex[peakval$lo], col='red')
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