similar to: sparse matrix and block of R

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I'm doing some basic operations on large sparse matrices, for example getting a row. it takes close to 30 seconds on a 3Ghz machine, and shots the memory usage up to the sky. I suspect there are dense intermediary steps (which, if true would defeat the purpose of trying to use sparse representaitons). As much as I try understanding the

Dear all, do you know if there is any particular version of R to implement with windows 64 bit, in such a way to increase the amount of memory it can use? How should I increase the memory, and more importantly to set a higher max vector size? It still stops me saying "Could not allocate vector of size 145" thanks to all alessia

Dear all, I just installed the new version of R, 2.10.1, and I am currently using the package sparseM. (I also use a 64 bit windows version) I got a problem that I never had: when I try to multiply with a kronecker product (%x%) two sparse matrixes I get the following message: Error in dim(x) <- length(x) : invalid first argument I never had this problem with previous versions of R. May

Dear all, I 'm implementing the koenker procedure for quantile fixed effects. I would like also to apply weights to the procedure, so that to give more weight to the observation that better represent my original sample (much larger than it is possible to use in R). Do you know if it is possible? How could I solve this problem? Thank you alessia

Hello. I am a beginer in R and I can not implement the KhmaladzeTest in the following command. Please help me!!!!!!!!!!! PD: I attach thw results and the messages of the R program R : Copyright 2006, The R Foundation for Statistical Computing Version 2.3.1 (2006-06-01) ISBN 3-900051-07-0 R es un software libre y viene sin GARANTIA ALGUNA. Usted puede redistribuirlo bajo ciertas

Dear All, simetimes when I load an Rdata I get this message ####### Code: load('bladder1.RData') Carico il pacchetto richiesto: rpart ( Bad traslastion: Load required package-...) Carico il pacchetto richiesto: MASS Carico il pacchetto richiesto: mlbench Carico il pacchetto richiesto: survival Carico il pacchetto richiesto: splines Carico il pacchetto richiesto: 'survival'

Last week Giovanni Parrinello posted a message asking why various packages were loaded when he loaded an .Rdata file. Brian Ripley replied saying he thought it was because the saved workspace contained a reference to the namespace of ipred. (Correspondence copied below). This begs the question: how did the reference to the namespace of ipred come to be in the .Rdata file? Brian did say it is

Dear list, I have some trouble generating a frequency table over a number of vectors. Creating these tables over simple numbers is no problem with table() > table(c(1,1,1,3,4,5)) 1 3 4 5 3 1 1 1 , but how can i for example turn: 0 1 0 0 0 1 0 1 0 1 0 0 0 1 0 1 0 0 into 0 0 1 1 1 0 0 2 0 1 0 3 My second problem is, sorting rows and columns of a matrix by the rowSums/colSums. I did it

Last week Giovanni Parrinello posted a message asking why various packages were loaded when he loaded an .Rdata file. Brian Ripley replied saying he thought it was because the saved workspace contained a reference to the namespace of ipred. (Correspondence copied below). This begs the question: how did the reference to the namespace of ipred come to be in the .Rdata file? Brian did say it is

Dear all, I am using the "rq.fit.hogg" function from the "quantreg" package. I have two problems with it. First (less importantly), it gives an error at its default values with error message "Error in if (n2 != length(r)) stop("R and r of incompatible dimension") : argument is of length zero". I solve this by commenting four lines in the code. I.e. I

Quantreg package allows to plot the summary of models derived by quantile regression at different taus. The plot shows the parameters variation by varying taus: intercept and slope (for a linear model). Together with these values even confidence intervals may be plotted, based on the threshold given within the summary (e.g. alpha=0.01 equals 99% CI). However the graphic even plots the mean of

I've been trying to draw quantile linear regression lines across a scatterplot of my data using attach(forrq) plot(PREGNANT,DAY8,xlab="pregnant EPDS",ylab="postnatal EPDS",cex=.5) taus <- c(.05,.1,.25,.75,.9,.95) xx <- seq(min(PREGNANT),max(PREGNANT),100) for(tau in taus){ f <- coef(rq(DAY8~PREGNANT,tau=tau)) yy <-

Quantile Regression for Longitudinal Data. Hi, I am trying to estimate a quantile regression using panel data. I am trying to use the model that is described in Dr. Koenker's article. So I use the code the that is posted in the following link: http://www.econ.uiuc.edu/~roger/research/panel/rq.fit.panel.R I am trying to change the number quantiles being estimated. I change the codes about

Hi, I write the CDR of my Asterisk 1.2.17 server in MySQL database using cdr_addon_mysql.so. Now I'm trying to write some custom values to userfield column by the SET(CDR(USERFILED)=SOME_TEXT) sintax, but nothing gets writeen in MySQL cdr table!! Why? I'm I skeeping something or what? Taking a look at the URL:

Dear all, I am running a quantile estimation with Sparse matrix and when I run the procedure rq.fit.sfn I receive the following warning: tiny diagonals replaced with Inf when calling blkfct. Does anyone knows exactly what does it mean? What's this kind of error? Should I get worried about this message? The matrix I use is a full rank matrix (and indeed I do not have any message about

Hi all, I have the following -newbye- problem. Inside R, I am trying to process a file and creating from it many files. The file is organized in different columns, the second containing a code. I want to create as output objects, which contain only entries in a certain code range, and whose name contain the code itself. Here is my attempt indice <- (201:399) for(i in indice){ data.i <-

Please, help me. I had a trouble in downloading from CRAN the package "untb". Everything seems to work. I type >install.packages(c(untb)) after selecting the CRAN mirror and I get a message of successful downloading. Indeed I have the package in the library and if I check with command > library() I see untb among the various packages. But, when I type the command:

Hello, I just installed R-2.15.0 on windows XP and cannot load package tcltk2 (which I just downloaded from CRAN as tcltk2_1.2-1.zip; package install reported no problems): > library(tcltk2) Carico il pacchetto richiesto: tcltk Loading Tcl/Tk interface ... done Error : .onLoad failed in loadNamespace() for 'tcltk2', details: call: system("cat /etc/issue", intern = TRUE,

As an agronomist, sometimes i need to perform statistical analisys on "weird" field data, like 3 or 4 level split plot design. I've read both the help of the program, some books and manual about S and "Venables/Ripley, Modern Applied Statistics with S", but i still have problems in (i suppose) formulae sintax. I'm trying to perform AOV, as explained in "Random

----- Forwarded Message ---- From: Nnamdi <nnamdii at yahoo.com> To: roger koenker <rkoenker at uiuc.edu> Sent: Friday, April 18, 2008 1:08:58 PM Subject: Re: [R] efficiently replacing values in a matrix I tried the sparse matrix implementation, still there are issues: a <- matrix(nrow=10000,ncol=10000) > a.csr <- as.matrix.csr(a) Error in if (nnz == 0) { : missing value