similar to: Re: A Problem I'm having with R

Dear Mr. Cleland, SEM-ueser, R-User, ... there isn't s-plus or R (a GNU-free version of the programming language S) code for structural equation modelling. I always wondered why. I personally think the language S, with the implementations S+ and R, is a good-perhaps the best-environment for statistical analyses. Why? It is object orientated, logical, etc. For example: the code for least

Full_Name: Chris Evans Version: 2.3.1 OS: Windoze XP Submission from: (NULL) (217.34.100.197) If I give "vignette("introduction")" I get: Error in sprintf(gettext(fmt, domain = domain), ...) : use format %s for character objects vignette() works for some other vignettes and "vignette()" gets me a list of vignettes and shows three with the name

Just in case anyone else hits this. I just installed R 11.0 alongside R 10.1.0 (off my D: drive in D:\R\... but I think that's irrelevent) and all went well, I selected my nearest CRAN mirror (Bristol is the one I like) and getting the selection list seemed to take ages though it did come eventually. However, I then got an error message saying that R couldn't make contact on port 80. I

Dear R gurus, particularly those of generous M$ tolerance and diverse gifts and knowledge! I have an interesting challenge that I will end up crunching in R involving service usage by patients. Maybe I can do all of it in R but I can't see how yet. My situation is that our IT Department can give me loads of XLS files about patients one of our services have seen. The are one per patient

Hi, Everybody! I have a big table which named table_x, and all the elements in the table is very large! Now I want to do the summay on the talbe_x[,3]. Unfornately, I can't get the right result! And the R give the warning messages as follow: > sum(table_x[,3]) >[1] NA >Warning message: >interger overflow in sum(.);please use sum(as.numeric(.)) (the original upper message is

The only references to this I can find searching the archives are to a student who asked in relation to his course work on a stats course. Promise I'm not doing that! I have a situation in which we want to test proportions against an expected proportion, binom.test() is great. I'd like to do some post hoc power tests (the x and n were beyond our control in the survey as all we could set

I am moving from windoze on a Dell laptop to Debian but I seem to have hit a snag for R. I managed to find the information to point an /etc/apt/sources.list entry at my local CRAN repository and have installed R 2.13.1 for squeeze from the Bristol UK repository. I installed a number of the additional R packages using synaptic which reported no errors but when I run my first

Hi all, I don't understand the behavior of is.integer(): > x <- integer() > is.integer(x) [1] TRUE > x <- 10 > is.integer(x) [1] FALSE > x <- 1:10 > is.integer(x) [1] TRUE Why is.interger() returns FALSE if x has only one element? And how can someone check if x is an integer but contains only one value? (R 1.5.0 on Linux i386) Thanks, Sven

Dear list, I was wondering if there is a function to plot league tables, sometimes also known as "caterpillar plots"? A league table is conceptually very similar to a box plot. One difference is that the inter-quartile ranges are not shown. If there isn't such a function a first attempt for a "selfmade" plot would be to tell boxplot not to plot boxes (sounds silly

I may be being dopey, I surely am, but I'm baffled by this. I've been working, on and off for a few days in R version 2.13.0 (2011-04-13) i386-pc-mingw32/i386 (32-bit) working it through ESS. I've got a dataframe created a couple of days back, during the session: > dim(AllDat) [1] 27270 94 I came back this morning and misremembered my variables and thought I had a variable

Here is an R problem I am struggling with: My dataset is organized like this... subject session variable_x variable_y 01 1 1 <interger values> 01 1 2 01 1 3 01 2 1 01 2 2 01

I'm working on Windoze XP and have for some time installed R in D:\R and upgraded my packages after installing the new version of R with a bit of code I think I got from the list: ip <- installed.packages(lib.loc = "d:\\R\\R-2.4.1\\library") ip <- ip[ip[,1]!="base" ,1] install.packages(ip) This time around that's produced some warning grumbles: Warning messages:

I'm sure I'm being stupid so flame away... R2.2.1 on Windoze (boohoo) latest updates of packages. I'm exploring a dataset (land) with three variables looking at an narrowly unbalanced two group (GROUP) ANCOVA of a randomised controlled trial analysing endpoint score (SFQ.LOCF.ENDPOINT) entering the baseline score (SFQ.BASELINE) as covariate and the following work fine: > res.same

Dear R user, if the dates are in format as "20050425" i.e., Apr. 25 2004" can you suggest an easy way to transfom it to standard form as "2005-04-25" or "2004Apr25" or "2005/04/25" or any other format which is R recognizable? if there is no easy way to do that, can you let me know what is the function in R performing similiar function as the

Sorry bit of a Newbie question, and I promise I have searched the forum already, but I'm getting a bit desperate! I have over-dispersed, zero inflated data, with variance greater than the mean, suggesting Zero-Inflated Negative Binomial - which I attempted in R with the pscl package suggested on http://www.ats.ucla.edu/stat/R/dae/zinbreg.htm However my data is non-integer with some pesky

Dear R Users, Is it possible to make file names dependent on a changing variable? For instance. I generate random numbers in a loop and at each iteration I want data to write to file (I do not want to write everything in one file using 'append'): for (i in 1:50){ x<-matrix(runif(100, min=0,max=1),nrow=5,ncol=20) Write(t(x),file="Data_i.txt",ncolumns=5,sep="\t") }

Dear mailing list, For two normal distributions, e.g: r1 =rnorm(20,5.2,2.1) r2 =rnorm(20,4.2,1.1) plot(density(r2), col="blue") lines(density(r1), col="red") Is there a way in R to compute/estimate the point(s) x where the density of the two distributions cross (ie where x has equal probability of belonging to either of the two distributions)? Many Thanks Eleni

The specific message is: "Warning: package 'spatial' in library '/usr/lib/R/library' will not be updated" and the number of libraries about which that's the complaint is now increasingly almost daily so clearly something is wrong. I'm working on a laptop on which I do the recommended Ubuntu updates daily. I done a standard installation of R 2.15.1 using

Dear R-community, my data set looks like 'mat' below. Plant<-c(NA,1,1,1,NA,NA,NA,NA,NA,1); Value1<-rnorm(1:10); Value2<-rnorm(1:10); mat<-cbind(Plant,Value1,Value2); I receive data from two different sites. One site is identified by an interger number, the other site has no data in column Plant=NA. My pb: I'm trying to assign labels "A" or "B" to

Hi All, I'm a little stumped by the following problem. I've got a dataset with the following structure: idxy ix iy country (other variables) 1 1 1 c1 x1 2 1 2 c1 x2 3 1 3 c1 x3 . . . . . 3739 55 67 c7 x3739 3740 55 68 c7 x3740 where ix and