search for: wrair

...for (i in 1:length(measure)){ tval[i]<-measure[[i]][[1]] df[i]<-measure[[i]][[2]] pval[i]<-measure[[i]][[3]]} data.frame(tval,df,pval) Charles E. White, Biostatistician Walter Reed Army Institute of Research 503 Robert Grant Ave., Room 1w102 Silver Spring, MD 20910-1557 301 319-9781 WRAIR Home Page: http://wrair-www.army.mil/

I apologize if this is a FAQ -- I kind of recall seeing something along these lines before, but I couldn't find the message when I searched the archives. Problem: 1. I have hundreds of small files in a subdirectory ("c:\\temp") and I would like to combine the files into a single data frame. 2. Individually, it is easy to read each file

Dear all, I have a question on the dose-response estimation with clustered/ correlated binary data. I would like to estimate the hit rate for a certain test at various concentration levels. The test is used on 5 subjects, and each subject is tested 20 times. If we assume that the 100 samples are independent, the hit rate estimate is unbiased, but the variance is under-estimated. The other

...with the 'run' file. That's one of the first things said in the instructions but I forgot by the time I got things compiled. Thanks for your help. Chuck -----Original Message----- From: Gavin Simpson [mailto:gavin.simpson at ucl.ac.uk] Sent: Tue 5/31/2005 8:57 AM To: White, Charles E WRAIR-Wash DC Cc: r-help at stat.math.ethz.ch Subject: Re: [R] R GUI for Linux? White, Charles E WRAIR-Wash DC wrote: > Thanks for the tip. I thought that 'Base' files were installed already > but I know better now. Unfortunately, I'm still not up and running yet. > Since I don'...

Platform: WIN2000 Version of R: 1.6.2 I'm interested in plotting fitted values in a trellis xyplot. I believe the following should work; however, I only get the points (not the fitted lines). library(lattice) trellis.device(bg="white") xyplot(MULTDV~TIME|SUBNUM,data=TEMP, panel=function(x,y){ panel.xyplot(x,y) lines(x,fitted(lm(y~poly(x,1),na.action=na.omit)))

Hello all, I noticed that both Windows and OS X version of R have a GUI (Rconsole). Is there a GUI for Linux? I'm running Debian on which the CLI for R works just fine. Regards, - Robert

I am currently using R 2.1.1 under Windows and I do not seem to be able to load the current versions of lme4/Matrix. I have run 'update.packages.' I understand this is still experimental software but I would like access to a working version. Thanks. Chuck R Output: > library(lme4) Loading required package: Matrix Error in lazyLoadDBfetch(key, datafile, compressed, envhook) :

Looking to the wonderful statistical advice that this group can offer. In behavioral science applications of stats, we are often introduced to coefficients for orthogonal polynomials that are nice integers. For instance, Kirk's experimental design book presents the following coefficients for p=4: Linear -3 -1 1 3 Quadratic 1 -1 -1 1 Cubic -1 3 -3 1 In R orthogonal

It is frustrating to see the labels I want in the dimensions of a list but not be able to extract those labels into titles for plots generated from component objects. If someone could set me straight, I would appreciate it. For your amusement, I have provided an example of the Byzantine code I am currently using to avoid loops: # Simulate ANOVA type test data sex<-c(rep(1,8),rep(0,8))

I installed the MinGW-5.0.0 compilers today (gcc-3.4.2 is now contained in the 'Current' distribution. When the current compilers failed to compile the referenced Matrix update and not knowing how to check the exact version numbers for individual files, I applied the Id.exe and f771.exe fixes from the 'Building R for Windows' page (http://www.murdoch-sutherland.com/Rtools/#ldbug).

I'll address two issues. The first is today's error message and the other is change management for contributed packages on CRAN. TODAY'S ERROR MESSAGE I switched from the 0.995-1 versions of lme4 and Matrix to those referenced in the subject line this afternoon. Prior to using these packages on anything else, I applied them to code that 'worked' (provided numerical results

...that have non-white backgrounds. Paranthetically, I note that his response to my question (5/27/02 4:43 PM)actually made it to my mailbox before my actual question did (5/27/02 4:48 PM)...one doesn't get much quicker advice than that. PB -----Original Message----- From: Bliese, Paul D MAJ WRAIR-Wash DC To: 'r-help at stat.math.ethz.ch' Sent: 5/27/02 3:51 PM Subject: [R] lattice background color I'm sure there is a simple answer to this question, but it stumps me so far. I've been using R to create graphic images and paste them into other programs (Word, PowerPoint...

It is my understanding that Tcl/Tk does not come with the base installation of R under OS X ( http://www.sciviews.org/_rgui/projects/TclTk.html). Is there a simple way to explain how a user with limited tolerance for computer complexity can obtain and install Tcl/Tk for OS X? Thanks. Chuck Background: Roughly a third of my target audience uses OS X. I do not and I do not have access to a

The link to the search engine at the University of Newcastle, Australia doesn't seem to be working. Is there someone who can either update the link or indicate when the service may be back? Thanks. Chuck

It seems nice that R is part of the 'walled garden' of applications specifically configured to run under Fedora Core 4 (Linux). The gnomeGUI has a separate installation routine under FC4 and yum tells me it's installed. I've even found an executable for it in /usr/lib/R/bin/exec. However, as far as I can tell, it doesn't do anything. Since the documentation is rather...

I'm sure there is a simple answer to this question, but it stumps me so far. I've been using R to create graphic images and paste them into other programs (Word, PowerPoint). Recently, I've been using lattice (wonderful package), but I can't figure out how to create graphs in lattice that don't have a background color -- that is, my graphs carry over the grey background if I

I'm reluctant to draw the S-PLUS and R comparison (these are different programs after all), but could someone tell me why the following matrix substitution works in S-PLUS, but not R. I'm curious because matrix substitution is a really slick way to "cleaning up" columns of data in data frames. For example, in the following I change values of 1 to values of 10, but only for

1) In general, I would appreciate help in adding functions to the Rcmdr menu system. I've been able to modify the menus themselves and source test code but I can't get R functions to execute from the menu. My latest proof of concept code follows: Three lines added to "Rcmdr-menus.txt": menu junkMenu topMenu "" ""

As usual, the R newsgroup set me straight (thanks to Douglas Bates, Robert Balshaw and Albyn Jones). There is really no difference between using orthogonal polynomials of the form: Linear -3 -1 1 3 Quadratic 1 -1 -1 1 Cubic -1 3 -3 1 Versus > poly(c(1:4),3) 1 2 3 [1,] -0.6708204 0.5 -0.2236068 [2,] -0.2236068 -0.5 0.6708204 [3,] 0.2236068

R is included in Fedora Extras. You can skip downloading Extras and updating the packages on the CD by using: yum index | grep R and installing the half dozen or so individual packages that will be listed. The number of packages may be mildly annoying but if you install this way you will be notified of R updates along with all of your other security and application updates through the Red Hat