similar to: help with means using tail()

Dear R helpers,   I know this is a simple task, but I'm new to R and I'm still havind difficulties with the language. I want to create 30 vectors to be used in a simulation, each with 1 columm and 5 lines, of random numbers N(0,1). What I tried was this:   N=150 u2<-rep(1:150,0) u2<-list(matrix(0,5)) u2 for(i in 1:N) { u2[i]<-rnorm(5) } u2 ### also tried this: N=150

Dear R helpers,   I have a ts object, dadosvar, and want to run a VAR. These are my data:   > dadosvar[1:15,]          dl    rp        igpm   ereal crescpib jurosreal  [1,] 32.31    NA 39.07  419.59       NA   7025.95  [2,] 32.00    NA 40.78  596.57       NA  13401.25  [3,] 32.70    NA 45.71  867.63       NA   7738.64  [4,] 33.22    NA 40.91 1261.36       NA  15669.95  [5,] 33.58    NA 42.58

Hello List, I have a longitudinal samples on multiple individuals, for initial analysis, i am doing some plots to see how the variable changes with the age. In some of the individuals one or two data points are missing, IL1Ra Age.at.Sample.Collection Subject.ID 6.575466 2.004106 00709-0 NA 2.162902

Hello list, I have a similar issue as this post http://tolstoy.newcastle.edu.au/R/e6/help/09/04/11438.html#options2 and I used the suggestion provided by Jorge with modifications to my data do.call(c,lapply(your_list_with_the_t_tests,function(x) x$p.value)) but I am getting the following error after excuting the code B<-by(eo,eo$PlateID, function(.sub) t.test(mcp1~Self_T1D,data=.sub,

Dear R helpers,   I am a beginner at R so please be gentle :) I have already read manuals and FAQs, with no help. I have a monthly time series data on public debt with 40 variables, it starts on January 1994 and ends on June 2011. I am loading the data into R using read.csv and the data looks ok when I do edit(dados): > dados<-read.csv("dadosR3.csv", header=T) then I tried making

Hello gurus, I have a dataframe containing two groups viz., 'control' and 'case', each of these groups contains longitudinal data for 100 subjects. I have to plot all these subjects on a single chart and then put a regression line for each of the group for all the subjects. I have written a function to do the chart grpcharts<-function (dat, group,group2,molecule,cutoff){

Hello R guru's I am a newbie to R, In my research work I usually generate a lot of ELISA data in form of absorbance values. I ususally use Excel to calculate the concentrations of unknown, but it is too tedious and manual especially when I have 100's of files to process. I would appreciate some help in creating a R script to do this with minimal manual input. s A1-G1 and A2-G2 are

Hi, I have been receiving messages on a new DomU''s kern.log. I''ve done a lot of googling, but haven''t came up with anything very useful, at least not in a Xen context. I was wondering if anyone had any suggestions about what could be wrong. From everything I have read, there should be a stack trace included, but I am not seeing one. Thanks in advance, Ian. on

Greetings, Xen gurus! Per the Ubuntu community documentation at https://help.ubuntu.com/community/Xen#Maverick%20Notes%20(Xen%204.0.1%20pvops%20on%20Ubuntu%2010.10) I am trying to install Xen 4.0.1 from source which I got from bits.xensource.com/oss-xen/release/4.0.1/xen-4.0.1.tar.gz because apparently the ubuntu-xen-server package has broken dependencies. The instructions as provided state

Hi all, does anyone know how to automatically update starting values in R? I' m fitting multiple nonlinear models and would like to know how I can update starting values without having to type them in. thank all --- On Fri, 12/26/08, r-help-request@r-project.org <r-help-request@r-project.org> wrote: From: r-help-request@r-project.org <r-help-request@r-project.org> Subject: