Displaying 4 results from an estimated 4 matches for "nvoice".
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2009 Jun 04
1
Morlet wavelet analysis
...7313149452230,
0.0330503877044541, 1.07332650281700, -1.37121080562242, -0.181568897416963,
1.55169357402125, -0.502404116831855, 2.19007041840759, 0.177374817139349,
1.37270541339308, 0.179612250662539, 1.33781757389541)
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??
Thank you,
Irina
Irina Foss
Environmental Research Institute
North Highland Colle...
2010 Aug 31
1
wavelet parameters with sowas
Hello everybody.
My name is Angela.
I'm doing wavelet using the sowas library. The problem I have is that I
don't know how to choose the paremeters to describes differnt wavelet
analysis. How I select the noctave, nvoice, w0, s0,...?
I hope my question is clear enough.
Thank you very much beforehand.
Angela
--
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2003 Aug 05
1
Rwave cgt plot time axis problem
Dear helpers,
When I use the function cgt of library Rwave, the time axis of the plot
is always on the [0,1] scale regardless of the original time. This
happedn when I tried to reproduce some pictures of "Practical
Time-Frequency Analysis", e.g. Figure 3.5 and 3.6 using the codes
provided in the book. But the figures of the book display the real
sampling time using the same codes.
2013 Apr 19
1
How to select the scale parameter for Gabor transform (Rwave)?
...lt;- 15
fMax <- 0.20
nf <- 100
df <- fMax/(nf/2)
scale <- 10
ys <- sin(2*pi*f1*ts) + sin(2*pi*f2*ts)
ys[t1] <- K
ys[t2] <- K
plot(x=ts, y=ys, xlab="Time", ylab="Signal", type="b")
cgtsinwave <- cgt(input=ys, nvoice=nf, freqstep=df, scale=scale, plot=TRUE)
Many thanks, Joaquin
--
Joaquin Rapela, PhD
Swartz Center for Computational Neuroscience
University of California San Diego
9500 Gilman Drive,
San Diego, CA 92093-0559
tel: (858) 822-7536
fax: (858) 822-7556
http://sccn.ucsd.edu/~rapela