morlet {dplR}  R Documentation 
Perform a Continuous Morlet Wavelet Transform
Description
This function performs a continuous wavelet transform on a time series.
Usage
morlet(y1, x1 = seq_along(y1), p2 = NULL, dj = 0.25, siglvl = 0.95)
Arguments
y1 

x1 

p2 

dj 

siglvl 

Details
This performs a continuous wavelet transform of a time series. This
function is typically invoked with wavelet.plot
.
Value
A list
containing:
y 

x 

wave 

coi 

period 

Scale 

Signif 

Power 

Note
This is a port of Torrence’s IDL code, which can be accessed through the Internet Archive Wayback Machine.
Author(s)
Andy Bunn. Patched and improved by Mikko Korpela.
References
Torrence, C. and Compo, G. P. (1998) A practical guide to wavelet analysis. Bulletin of the American Meteorological Society, 79(1), 61–78.
See Also
Examples
library(utils)
data(ca533)
ca533.rwi < detrend(rwl = ca533, method = "ModNegExp")
ca533.crn < chron(ca533.rwi, prewhiten = FALSE)
Years < time(ca533.crn)
CAMstd < ca533.crn[, 1]
out.wave < morlet(y1 = CAMstd, x1 = Years, dj = 0.1, siglvl = 0.99)