similar to: Randomly extract rows from a data frame

Hello R and BUGS users, I am writing a heirarchical model in R to send to BUGS via R2WinBUGS and I am finding it difficult to get the model to run. I seem to be having two problems. 1) I can't seem to send variables classed as factors (Month), is there a way do this? 2) Checking the Log in WinBUGS I can see that the model is Syntactically correct, but Bugs is not able to recognise the the

I've encountered something that didn't arise using earlier versions of R (Linux). A dataframe is created and new columns added to it by doing calculations using apply with various functions on some of the original columns. It's somewhat too involved to give a toy example that's reproducible. However, the resulting phenemonon can be characterised by the following: Browse[1]>

Hello, I want to create a flexible code for the following example: In stead of using a different code for each n (as in my example below), I want to write a general code for every n (n from 1 to 10). I tried a lot of things, but I always got stuck with the number of subloops or witch closing the brackets. Any suggestions? Cheers, Peter Department of Mathematics and Statistics

Shifting from a v2 samba server to v3 - Read documentation and googled LOTS but can't seem to find the bits that apply to my simple(?) server with regards to groups. # rpm -qi samba Version : 3.0.28 Vendor: Red Hat, Inc. Release : 1.el5_2.1 Source RPM: samba-3.0.28-1.el5_2.1.src.rpm Samba on server (Red Hat Enterprise Linux 5.2) IS MOSTLY WORKING... home directories

I would like to do a logistic multiple regression on a binary variate, with what Genstat calls an offset, ie a regression variable with the coefficient constrained=1. I'm far from home and have Splus but not R here, but any information from either source would be very welcome. I'd hate to have to go back to using Genstat . . . Thanks, Ted. --------------- Dr E.A. (Ted) Catchpole

Hi all, I would like to ask a question related to Kendall package. I ran Kendall (x,y) and saw the results. But I am not sure which tau values R reported. I have ties in my data set, so I want tau-b. Can anybody tell how Kendall package is calculating tau values? I have looked at the package PDF, but I could not find any useful information. As long as I see from the following link, there

I'll be teaching a graduate course on (the analysis of) experimental designs next year, using R. Does anyone know of a suitable textbook? (Venables and Ripley MASS Ch6 on Linear Models covers roughly the right material, but at a level that is way too difficult for my students.) Sorry if this has been asked before. I've looked through the archives and found Julian Faraway's book, but

There appears to be a bug in the R xfig() driver. When I run a simple example, eg > data(InsectSprays) > boxplot(count ~ spray, data = InsectSprays, col = "lightgray") the boxplot is fine. Doing the same thing after > xfig(file='test.fig') and then opening in Xfig (ver3.2 patchlevel 2) on my Linux box produces boxplots where the boxes, although correctly shaded in,

There appears to be a bug in the R xfig() driver. When I run a simple example, eg > data(InsectSprays) > boxplot(count ~ spray, data = InsectSprays, col = "lightgray") the boxplot is fine. Doing the same thing after > xfig(file='test.fig') and then opening in Xfig (ver3.2 patchlevel 2) on my Linux box produces boxplots where the boxes, although correctly shaded in,

Hello Volker, Thank you for the reply. I've seen your name mentioned several times against this topic :-) >What effect do you have in mind exactly? Read/write is done >asynchronously these days without that module as long as the >build detected pthreads. This is the thing... it looks like the Debian packages (stable + back port) are built without the --with-aio-support (at least

It is possible to tunnel various protocols - NNTP, FTP, HTTP etc thru SSH. Is it possible to do the same using SMB? TIA, Alex. -------------------- Mr Alex Meaden Computer Science Undergraduate University of Kent at Canterbury aejm1@meaden.dyndns.org http://meaden.dyndns.org/

Hi I'm study at University of Canterbury. Now, We have one project use R to do time series. The problem is I don't know how to use R to draw time series graph! Can you help me sovle this problem? I can not find in manuals book! Can you tearch me what fuction command I have to use? Thanks alway! Sam

Dovecot (0.9.11) consumes 100% CPU utilisation when accessing (either pop or imap) one of my mailboxes. It doesn''t happen with other mailboxes. The mailbox has about 500 mails while others have many more. They are all in mbox format. OS: OpenBSD-3.5 with all patches MTA: Sendmail-8.12.11 It happened with other RCs of dovecot-0.9.11 Configured as: ./configure --without-pam

Function/file names are hypothetical. Say I have written myfunction.R, which calls myfunction.c via .C("myfunction", ...). I've compiled successfully myfunction.c via R CMD SHLIB myfunction.c in the terminal. Then, in the R console: dyn.load("myfunction.so") source("myfunction.R") test <- myfunction() # works fine So everything is in order, myfunction works

Hi, I have a matrix of data values like the example bellow. I would like to extract a subset of the matrix for the values where the first column is negative. I am using the subset function. However, I am getting an error message that the conditional variable doe snot exist. For some reason, the subset operation only works if I transform the matrix to a data set using as.data.set(). The help

Hi there, I'm having an issue with vbscript in wine. It relates to a problem with the cardbox database client which you can see here: http://www.cardbox.com/wine.htm I get the Cardbox error message and pressing OK will return me to the Cardbox window, indicating vbscript is not installed. First I just ran the installer which I found here:

Dear all I am trying to create a list of all objects created over the course of a function. To wit: foo <- function(x){ first <- x*(1:8) second <- matrix(x*(1:16), ncol = 4) third <- 1:x list(x=x, first=first, second=second, third=third) } foo(5) No worries there. However, in the search for typing efficiency I wondered if it would be possible to use list(ls()) in

There's something (probably a lot) missing in my understanding of plotmath. The LaTeX code for what I'm trying to produce is \log(-\log(\hat R)) My (probably hopeless) attempt at it uses nested group()s: expression(plain(log) * group("(", -plain(log)*group("(", \hat(R), ")"), ")")) Can anyone do it right for me, please? Thanks, Ted. Dr E.A.

Dear all, I have used 'read.table' to create a data frame of 720 columns and 360 rows (and assigned this to 'Jan'). The row and column names are numeric: > columnnames <- sprintf("%.2f", seq(from = -179.75, to = 179.75, length = 720)). > rnames <- sprintf("%.2f", seq(from = -89.75, to = 89.75, length = 360)) > colnames(Jan) <- columnnames

It can't be this hard, right? I really need a shove in the right direction here. Been spinning wheels for three days. Cannot get past the errors. I'm doing something wrong, obviously, since I can easily compute the Box's M right there in RStudio But I don't see what is wrong below with the coding equivalent. The entire code snippet is below. The code fails below on the call to