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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

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)))

If you found my subject heading to be confusing then I'm sure you'll enjoy the example I've included below. I find the apply type functions to be wonderful for avoiding loops but when I use them with existing functions, I end up using loops anyway to extract the vectors I want. I would appreciate it if someone could show me how to avoid these loops. Thanks. EXAMPLE:

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

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

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

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))

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

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

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

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) :

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 "" ""

My subject line refers to a thread from June 2005 where I found explanations from Uwe Ligges and Friedrich Leisch as to what is intended by the R citation recommended within the software. Forgive me if I missed some points within the thread but when I found myself circling through messages I had already read, I stopped trying to follow it. I understand and mostly agree with how the R citation is

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

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

Dear all, I have a very simple set of data and I would like to analyze them with probit analysis. dose event trial 0.0 3 15 1.1 4 15 1.3 4 15 2.0 3 15 2.2 5 15 2.8 4 15 3.7 5 15 3.9 9 15 4.4 8 15 4.8 11 15 5.9 12 15 6.8 13 15 The dose should be transformed with log10(). I use glm(y ~ log10(dose), family=binomial(link=probit)) to do probit analysis, however, I have to exclude the

Hi! I have setup a router with 3 NIC: inet->eth0->eth1-local_users ->eth2-DMZ_server I have also setup dhcp and DNS on the router. DHCP is server only for eth1 while on eth2 I have static IP address. So everything works except connecting local_users on eth1 to Samba shares on the server in DMZ by server name. Yes, I have it in my DNS records to point to it and with nslookup