RSEIS (version 3.3-3)

hilow: Find Maxima and Minima

Description

Search for Extrema along time series

Usage

hilow(y)

Arguments

y

time series

Value

• LIST:
• hi
  indexes to peaks
• lo
  indexes to valleys

See Also

peaks

Examples

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')