Irina Foss wrote: > Dear, > > I am using "cwt "function from Rwave package to perform Morlet wavelet > analysis. > d1<-ts(d1deltat=1,start=c(1960,1)) > library(Rwave) > D1-cwt(d1,noctave=8,nvoice=1) > > After I did Morlet wavelet analysis by using function "wavelet" from dplR > package. > > library(dplR) > > D2<-wavelet(d1,Dt=1) > > But the wavelets from two tests are very different. What is the reason??
Try D2<-wavelet(d1, 1, s0=2, dj=1, J=7, siglvl=0.95) plot(abs(D1)) plot(abs(D2$wave)) This at least gives the shape of the other one for each frequency analysed, but unfortunately the magnitudes are different. Differences are probably due to the energy normalisation constants and the size of the gaussian envelope. You'll have to look at the code to find out. I have a Morlet Wavelet script in Scilab if you're interested in checking that out. I wrote it so that I could customise everything I was interested in easily and as a learning process. Matt Albrecht ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
