Displaying 15 results from an estimated 15 matches similar to: "Best package for time series analysis with wavelets???"
2004 Oct 22
0
wavelets
Hi
I wanna know how can I just obtain the values of mother wavelets (symmlets) for the corresponding support. That isn´t the decomposition, just the values we can plot in R.
thanks a lot
Lane
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2009 Feb 21
0
problems in package "wavelets" function "wt.filter"
> wt.filter("d8")
Error in validObject(.Object) :
invalid class "wt.filter" object: invalid object for slot "transform" in class "wt.filter": got class "function", should be or extend class "character"
How come ? The above function works fine with the other Daubechies filters.
Thank you.
Best regards,
Maura
tutti i
2010 Feb 16
0
Outliers detection using wavelets
Hi R users
Thanks in advance
I have time series data sets. Is there any package in R that helps detect the outliers using wavelet methods.
Thanks
email: ( assaedi76@yahoo.com )
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2001 Apr 28
1
Is there a package for wavelets?
The library wavethresh performs 1-d and 2-d wavelet statistics and
transforms.
You can find it in the package sources in http://cran.r-project.org.
Hope this helps.
--
==============================================================
Alvaro Colina |-|o||o||o||o||o||o||o||o||o|-
Area de Quimica Analitica | Pza. Misael Banuelos s/n
Facultad de Ciencias | 09001. Burgos. Spain
Universidad de
2003 Feb 25
1
Wavelets correlation test
Hello,
I use wavethresh packages to perform wavelet analysis.
In particular, I would like to compare 2 signals (vectors) after a wavelet
decomposition. I would like to use cor.test function, but this function acts
on the entire vector values.
I plan to perform a cor.test on each level of the wavelet decomposition, say
N. So I will have at the end of a first step N results of cor.test.
How can
2009 Feb 20
0
package "wavelets" does nor recognize filter "d2"
I take the liberty of pasting the on-line documentation for package "wavelets", functions "dwt" and "wt.filter", pertinent to the wavelet/filter choice.
While I apologize for my verbose messages with huge attachments, I encourage whoever loads packages to CRAN to take some minutes to reread the attached documentation.
Usage
dwt(X, filter="la8", n.levels,
2009 Jul 28
0
spherical wavelets package
Hello to all,
I am trying to use the spherical wavelets package on my altimetry data.
I am having some problems now and then.
Currently I am having an error of
"error in matrix(0,KK,JJ) : too many elements specified"
there is a thread of possibly same error (https://stat.ethz.ch/pipermail/r-help/2005-January/064308.html)
but it seems like it doesnt really help me.
More
2010 Sep 03
2
Package wavelets
Hi user's
Does anybody work with wavelets on R?
Please I need some help.....!!!!
Atte
Marize Sim?es
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2011 Jul 04
1
wavelets
I'm new to the topic of wavelets. When I tried to use the mra function in the
wavelets package, the data is not getting compressed. eg. if the original
data has 500 values , the output data also has the same.
However in MATLAB, depending on the level of decompositon, the data gets
compressed.
How do I implement this in R?
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2001 Sep 01
0
local dicriminant basis with wavelets
hi,
does anyone already have implemented in R the Best-Basis
Algorithm or the Local Discriminant Basis Algorithm using
wavelets?
for those interested: both algorithms are described in N. Saito, R.
R. Coifman: "Local Discriminant Bases" (SPIE vol. 2303, 1994) and
can be downloaded here:
ftp://pascal.math.yale.edu/pub/wavelets/papers/ldb.ps.gz
thanks,
till
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ALL THESE WORLDS
2000 Dec 08
2
R and wavelets
Does anyone know of any use of wavelets (particularly for density
estimation) in R? Are there any wavelet packages?
-Alex Morgan
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2009 Oct 23
2
Wavelets
Hi all,
I am trying to do wavelets and I got an error message saying "The
length of data is not a power of 2"
Is there a way of handing that? or should the data length be exactly
the power of 2?
I am using R version 2.9.2 (2009-08-24)
The is library(wavethresh).
wds <- wd(ds$v,filter.number=1)
Thanks
1998 Nov 11
1
Wavelets in R
On Wed, Nov 11, 1998 at 01:00:34PM -0500, Norm Josephy wrote:
>
> Sir:
>
> I find your version of R excellent. I am teaching a course
> next semester on Graphical Exploratory Data Analysis, and am
> looking forward to having my students use this software.
> Thank you for making it available.
> ............................................................
> I am
2002 Oct 27
1
denoising univariate data with wavelets
Hi,
I am interested in a applying wavelets as a smoothing tool for my
(1-dimensional) data. I looked into wavetresh and waveslim packages but
could not quite figure out an obvious way to do this after running dwt or
wt functions. Would someone be able to point me in the right direction on
how to denoise univariate data using one of wavelet packages available in
R?
Thank you very much
Jane
ps
2009 Mar 04
1
flaw in CRAN package "wavelets": Daubechies "d8" not recognized by function wt.filter
> wt.filter("d8") #### HOW COME ????
Error in validObject(.Object) :
invalid class "wt.filter" object: invalid object for slot "transform" in class "wt.filter": got class "function", should be or extend class "character"
> wt.filter("d10") # OK
An object of