similar to: Why ?rmvnorm not working

Quite often I save misc functions and data objects as .RData files that I can use in other sessions. Although I could 'Load Workspace" these files, most of the times I prefer attaching them. It would be really convenient to have a menu item under the File menu on the Windows R Console to allow attaching workspaces, e.g. -------------------- Attach Workspace... Load Workspace... Save

Hi, Please correct me if this request does not belong to this discussion forum. Kindly suggest me if there is a way to create a new folder from R on runtime? for e.g. >From one of my R script I want to store the PDF result file in a perticular folder let say c:\tt for that initially i am creating "tt" folder manually and using the following command: fname <-

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Hello, I would like to add to axis labels special caracters. Instead of writing :plot(simul, xlab="beta", ylab="sigma11") It would be great if I could write something as in LaTeX :plot(simul, xlab="\beta", ylab="\sigma_{11}") Is there a way to do that ? Thank you _________________________________________________________________ ues clics pour retrouver tout

hi, in using glm function is it possible to extract residuals and predict values ? ___________________________________________________________________________ [[alternative HTML version deleted]]

hello, If I wanna export data.frame from R to html have you got some ideas to do this? ___________________________________________________________________________ [[alternative HTML version deleted]]

Hi, I like to know the simple way to list the R package names in our linux system. Thanks Ying [[alternative HTML version deleted]]

Dear list members, I am analysing some microarray data. I have got the differentially expressed genes and now want to carry out PCA analysis to get the main components that contribute to the variance.I have browsered the CRAN and BioConductor and did not find an appropriate package. Have anybody ever carried out PCA analysis? Is there any package about PCA in R? Thanks for your advice.

Hi, I have a csv file with empty values, when I apply the different functions (mean, std, etc.) I create a new data frame, the empty values generate Inf and -Inf values. How can I remove those Inf and -Inf values from the new data frame? I already specified na.rm in the mean and std functions, but the values are still there. Thank you, Judith

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Hi All, is there a function in R that allows me to work with fractions without transforming them to floats (or whatever) in between? Something that would calculate something like: (1/2 + 1/8) * 1/2 = 5/16 without ever transforming to 0.5 and 0.125? Best, Federico -- Federico C. F. Calboli Department of Epidemiology and Public Health Imperial College, St Mary's Campus Norfolk Place,

Hi, I need to multiply all columns in a matrix so something like apply(x,2,sum), but using multiplication should do. I have tried apply(x,2,"*") I know this must be trivial, but I get: Error in FUN(newX[, i], ...) : invalid unary operator The help for apply states that unary operators must be quoted. I tried single quotes too, with the same results. Thanks, -Jose -- Jose

Dear R-Experts, I have the following command lines: windows() plot(0:60, 0:0.896, type="n", xlab="Zeit [min]", ylab="Absorptionsmessung bei 600nm",main="Zellwandstabilit?t" ) dev.off() Can anyone say me why the plot command does not work and how the correct one should look like? Important is: x-axis goes from 0 to 60 and the y-axis from 0 to 0.896!

Hi All what is the command to give me the listing of the loaded packages. I mean which are active and not the listing of all the installed packages as given by library() thanks in advance -gaurav ============================================================================================ DISCLAIMER AND CONFIDENTIALITY CAUTION:\ \ This message and ...{{dropped}}

Dear list, I have been trying to use coxme in R 2.3.1. When I use coxme in the following data sim.fr1, i get "Warning messages: using 'as.environment(NULL)' is deprecated" Why does it occur? How can I hide such warning message, especially when coxme is under a loop? Mohammad Ehsanul Karim (Institute of Statistical Research and Training, University of Dhaka) >

Dear all, Suppose I have a very long expression e. Lets assume, for simplicity, that it is e = expression(u1+u2+u3) Now I wish to replace u2 with x and u3 with 1. I.e. the 'new' expression, after replacement, should be: > e expression(u1+x+1) My question is how to do the replacement? I have tried using: > e = parse(text=gsub("u2","x",e)) > e =

Dear All, For function: rmvnorm{mvtnorm} in (library mvtnorm, not splus2R), if I generate 2 bivariate normal samples as follows: > rmvnorm(2,mean=rep(0,2),sigma=diag(2)) [,1] [,2] [1,] 2.0749459 1.4932752 [2,] -0.9886333 0.3832266 Where is the first sample, it is stored in the first row or the first column? Does this function store samples row-wise or column-wise? Thank

Hi Everybody, Thanks in advance for your help. This is my first time using the foreach statement and I cant get it to work properly so here is what i have test<-function(){ repeat { cand2[l-1]<-rinvgamma(1,phi,lambda[l-1]) q2<-dinvgamma(cand2[l-1],phi,lambda[l-1]) p2<-cand2[l-1]^-1.5*exp(-y[l]^2/(2*cand2[l-1]))*exp(-((log(cand2[l-1])-mu_t_cand[l-1])^2)/2*sigmasq)

Dear all, I am new in R and would like to ask for someone's help in understanding where I go wrong with the following code: rm(list=ls()) # Required packages library(MCMCpack) # Simulated data set.seed(1) data = rinvgamma(n=250, shape = 5, scale = 2) + 2 hist(data) # log-likelihood ll = function(par){ if(par[1]>0 & par[2]>0 & par[3]<min(data)) return(

Hi, By rinvgamma(10000,1.33,2.33) , am I supposed to get a var=3 ? Tried it many times , not even close. Why is this? thanks a lot . best