similar to: Generating Data

Dear All I want to generate multivariate normal data in R for a given covariance matrix, i.e. my generated data must have the given covariance matrix. I know the rmvnorm command is to be used but may be I am failing to properly assign the covariance matrix. Any help will be greatly appreciated thanks. M. R. Ahmad

> results <- mra(x$w1mcp, filter = "d4", n.levels = 3, boundary = "periodic", method = "dwt") > write.csv(results, "c:/mydata.csv") Error in as.data.frame.default(x[[i]], optional = TRUE) : cannot coerce class 'structure("mra", package = "wavelets")' into a data.frame I am not able to access data stored in results.

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) >

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

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:

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:

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 :

------------------------ 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 }

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) :

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

Airon, I used R2.4.0 on a Windows XP (SP2) (not Chinese :-)) and it still works: > data = read.csv("u:/airon.csv") > xdata = data$Adj..Close > modwt.la8 = modwt(xdata, "la8", n.level=6) > summary(modwt.la8) Length Class Mode d1 1467 -none- numeric d2 1467 -none- numeric d3 1467 -none- numeric d4 1467 -none- numeric d5 1467 -none- numeric d6 1467

Hello, I am looking for a code in R for the variance ratio test statistic (the Lo and Mackinlay version or any other versions). Does anybody have such a code they can share or know a library in which I can find this function? Basically I have a number of time series which I need to check for persistence. One other test I can use is the runs test in the tseries package. Any help will be greatly

Hi all, anyone has an idea how I could fix this? \donttest{ ## Set colors from colorspace package with a fallback col <- try(colorspace::rainbow_hcl(5), silent = TRUE) %||% rainbow(5) } The problem is that this makes R CMD check freak out (http://www.r-project.org/nosvn/R.check/r-devel-linux-x86_64-debian-clang/falsy-00check.html) if the colorspace package is not declared as a dependency.

Dear All I am kind of stuck up with a code a part of which seems to be causing a problem, or at least I think so. May be the community can help me. It’s simple but I suppose I am missing something. I generate a data matrix X, say of order n*p, where n represents independent row-vectors and p correlated col vectors. Let the row representation be X = (X’_1, . . ., X’_n)’. I generate the

hi- i have a configuration in which i'm using different passdb/userdb settings for each of imap, lmtp and smtp [without getting too far off on a tangent, this is so ldap group membership can be used to independently control authorization for receiving [lmtp], retrieving [imap], and sending [smtp/postfix] of email. each passdb/userdb uses a different search filter.] when i use this as my

Hello all, I have been looking through the internet and through the wiki, trying to find something which explains in details the available interfaces with which one might be able to insert some code to make some slight additions to Xen functionality. I am doing some research on the possibility of adding some extra functionality to Xen, and my supervisor has mentioned that these are things worth

>hi, >I am using R version 2.10.0.when i am trying to retrieve the previous used R commands >by using ↑ and ↓ keys,but i get the output like this ^[[A^[[A^[[A^[[B^[[C^[[A. >can any one tell me how i can solve this problem. -- Regards Ab Rauf Shah -- Regards Ab Rauf Shah [[alternative HTML version deleted]]

Hi I am trying to install llvm and clang on ubuntu 16.04, I tried installing them using apt command but while running the pass it gives me error "error: llvm/pass.h not found *#include"llvm/pass.h"* so i tried installing using the source code and building it my self, *make *fails at 98% with this error *collect2: error: ld returned 1 exit

Dear all, how can i search multiple text or string patterns in a text file. i have written the following script but it is for only single searches at a time. how can i get multiple searches e.g "xyz","abc","pqr".....at a time and can save the results to an out file. script:: x<- "abc" z<-NULL;for (i in 1:1235){{if

Dear Olly, I am very excited to contribute in open source community through the platform of Google Summer of Code 2011. I have visited the ideas of ?Xapian? at http://trac.xapian.org/wiki/GSoCProjectIdeas for GSoC 2011. I am interested in working on ?Improve Existing Bindings?. The reason for my interest is that I have previously worked on .NET related projects both in VB and C#. I also have