RSEIS (version 2.1-6)

xcor2: Cross Correlation

Description

Cross correlation of two signals

Usage

xcor2(a1, a2, DT, PLOT = FALSE, LAG = 100)

Arguments

a1

input signal 1

a2

input signal 1

DT

deltaT in seconds

PLOT

logical TRUE=plot

LAG

time lag for correlation function

Value

• Return list from ccf, and position of maximum lag. Graphical Side effects.

Details

Illustrates the cross correlation of two time series.

See Also

ccf

Examples

data(CE1)

ts1 = CE1$y[CE1$x>5.443754 & CE1$x<5.615951]

ts2 = CE1$y[CE1$x>5.760959]
ts2 = ts2[1:length(ts1)]

ts1 = ts1-mean(ts1)
ts2 = ts2-mean(ts2)

xc = xcor2(ts1, ts2, CE1$dt , PLOT = TRUE)