Displaying 20 results from an estimated 1000 matches similar to: "Help needed for this error"
2006 Jan 08
2
Filters in waveslim
Dear R Users,
For running wavelet functions using dwt( ), modwt( ), and mra( ), a wavelet filter algorithm is applied. For all these functions, default is "la8" and other possibility is "haar". In related documents, another possibilities like as symlet and coiflet ... are not cited.
Besides "la8" and "haar", which wavelet filters can be used?
Thank
2012 Mar 17
3
how to call functions with same name but in different package?
hi everyone .
I am trying to use some packages but there are some functions have the same
name in different package.
for example
dwt function
both in packages wavelets and waveslim
dwt(X, filter="la8", n.levels, boundary="periodic")
How can I avoid mixing them up ?
--
TANG Jie
Email: totangjie@gmail.com
Tel: 0086-2154896104
Shanghai Typhoon Institute,China
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?
--
View this message in context:
2006 May 25
1
understanding DWT
Can someone please help me understand the examples given in the dwt
function of the waveslim library
library(waveslim)
?dwt
I'm having a problem understanding these lines. I assume they are
required because of how the algorythm deals with the signal bounderies.
Am I correct in thinking that for wavelets of scale 1 and 2, the
coefiecints need to be shifted by 2 places, for scale 3 and 4 shift
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 Oct 16
2
what's the R code for wavelet decomposition (Haar transformation)?
Dear all,
Using R function "dwt", it seems that I cannot specify the wavelet
transformation like Haar. What's the R code for wavelet decomposition
which allows me to specify Haar wavelet transformation? Of course, if it
can include "db2", that is even better. In general, I want an R function
like matlab code "dwt". Thanks in advance!
Zhen Li
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
--
View this message in context: http://r.789695.n4.nabble.com/Package-wavelets-tp2526023p2526023.html
Sent from the R help mailing list archive at Nabble.com.
1999 Nov 19
2
Impulses
After playing with the vorbis code for a while and doing tons of hacks and
analysis on it, I've found it to perform very poorly with impulse signals.
The MDCT seems to cause lots of spreading, and it seems to result in much
worse impulse performance then mp3.
What is the current plan on handling this? Will a smart quantizer be able
to avoid it?
I've been looking at various ways of
2012 Apr 01
1
Error in xy.coords(x, NULL, log = log) : (list) object cannot be coerced to type 'double'
Hi there,
When I run the code below I get the error
Error in xy.coords(x, NULL, log = log) :(list) object cannot be coerced to
type 'double'
Any tips how I can resolve this?
>
> library("waveslim")
>
> vols=read.csv(file="C:/Users/ocuk/My Documents/Abs Vol.csv", header=TRUE,
> sep=",")
> x<-c(vols[,1])
> #x
> #data(ibm)
>
2013 Mar 29
2
changing y-axis intervals in a boxplot
Dear R-users,
I'm a bit of a rooky in R and do not know how to change the y-axis intervals of a boxplot.
The y-axis in my boxplot ranges from 0 to 100 which is fine. The problem is the interval level in between. Now it increases with steps of 20 but I'd like to have it changed by steps of 5.
Anyone knows how to do this in R?
I used the following code for producing this boxplot:
2005 Nov 23
1
assign() problem
I've written a piece of code (see below) to do a wavelet image
decomposition, during the evaluation of this code I would like to write
the results of some calculations back to the R root directory. I used
assign() to do so because the names should vary when going thrue a
while() loop. For some unknown reason I get an error that says:
Error in assign(varname[i], imwrImage) :
2005 Nov 04
1
problem in waveslim library?
This code consistenly segfaults for me. Can someone please take a look
and tell me if the problem is due to something I am doing or is there a
problems with the dwt (idwt) functions in the waveslim library.
Thanks
tom
library(waveslim)
2010 Nov 25
2
Lifting Wavelet Transform
Hi R users
Thanks in advance
Is lifting wavelet transform implemented in R? If so, which package or codes can be used for performing that?
assaedi76@yahoo.com
Thanks
[[alternative HTML version deleted]]
2005 Nov 29
1
wavelet transform
Hello,
I am thinking about plugging in Discrete Wavelet Transform as
described in Vorbis I spec:
1.1.2. Classification
Vorbis I is a forward-adaptive monolithic transform CODEC based on the
Modified Discrete Cosine Transform. The codec is structured to allow
addition of a hybrid wavelet filterbank in Vorbis II to offer better
transient response and reproduction using a transform better suited to
2005 Nov 23
1
help on list
Hi,
New to R,
having done a wavelet analysis i got a result as list.
The problem I have is : how can I acces to a given element of the list.
here is what I get from my variable scale_d28
>typeof(scale_d28)
[1] "list"
> length(scale_d28)
[1] 1
and scale_d28 is a list of 100000 double values?
Thanks
--
Jean Pierre BOTH
phone (33) 01.69.08.84.78 (work)
email
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
2011 Oct 14
1
Generating Data
Dear All
I need to generate multivariate NON-NORMAL data in R, which follows a
given mean vector and covariance matrix, say multivariate exponential
data. How can I do that?
Best regards
mra
2004 Feb 06
0
Fail to build a default Samba!
Dear Madam/Sir:
I downloaded the latest source file (version 3.0.1) and follow =
"Manifest" guide to build the binaries, but got failure.
OS: Red Hat Linux release 7.3 (Valhalla)
Kernel: 2.4.18-3 on an i686
***** Procedures I did to build:
[max@localhost source]$ ls -l configure
-rwxr-xr-x 1 max max 973150 Feb 6 10:30 configure
[max@localhost source]$ ./configure
:
2011 Jun 29
5
[Urgent] Email Retrieval from remote servers doesn't use Dovecot
------------------------
Dovecot Version:
------------------------
2.0.13
------------------------
Output of "dovecot -n":
------------------------
# 2.0.13: /usr/local/etc/dovecot/dovecot.conf
# OS: Linux 2.6.35-28-generic x86_64 Ubuntu 10.10 ext4
mail_location = maildir:/home/%u/Maildir
passdb {
args = %s
driver = pam
}
protocols = imap pop3
ssl = no
userdb {
driver = passwd
}
2009 Sep 10
1
samba w/o openvpn: OK - else strange issues
Hello,
I do have a very strange behavior. For some reason, I only observe
this, when I access a samba share through an openvpn tunnel.
(1) objective
have a share, have SECURITY USERS (to control access rights), but NULL
PASSWORDS (authentication is fine enough by vpn). Find config files
below.
This is samba 3.3.2. Openvpn 2.1_rc11.
(2) issue
I connect via vpn from winXP ... fine
I access