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Dear John, Dear Joseph, Thank you for your quick answers and the pointer to semnet. I try to clarify on my assumptions: - yes, I am willing to assume multivariate normality - no, I don't want to assume a single factor...

Hi Lucas, the examples below give you an idea how to add a column to an ffdf. library(ff) # physically single columns x<-ff(runif(10,0,1)) y<-ff(runif(10,-1,1)) z<-ff(runif(10,2,3...

If I receive ASCII data through the socket-interface, how can I apply scan() and read.table() to this character data? scan() seems to read only from file or keyboard, read.table only from file. Thanks for any help Regards...

Does anyone know about R code for the methods presented in "Item Similarity in Scale Analysis" in Political Analysis, 2000, 8:3, 261-283 by Marco R. Steenbergen? (seems to be a variant of Item Similarity Index from Hunter 1973...

"Simon Pears" <s.p.pears at hotmail.co.uk> writes: > Hi, > > I am considering using R to integrate with a Java application. However, > before deciding upon R I need to understand if R is capable of dealing with > multiple requests...

No, MANOVA is for Multivariate analysis of variance which is used if there are multiple responses as well as variables but you just have one response which is blood pressure. You should just have model <- lm(BP ~Weight+Height) anova...

Hi, is there a way to have roxygen2 write both export(<generic>,<class>) and S3method(<generic>,<class>) to the NAMESPACE file? I tried #' @rdname Summaries #' @export all.bit <- function(x, range=NULL, ...) and only get S3method(all,bit) but not...

Hi, does anybody know, how to enforce a certain encoding for readCitationFile()? Haven't found any usable documentation for this :( E.g.: basecit <- system.file("CITATION", package="base") source(basecit, echo=TRUE, encoding="8859-1") readCitationFile(basecit) BTW: 'make check...

Does anyone know, if there are any fast k-nearest neighbor methods available for R, and how they consume memory and time with increasing n (n, n*log(n), n^2) ? (I will summarize, if I receive information not send...

Try to close the file on the first nfs client before reopening it on the second nfs client. NFS has something called "close-to-open cache consistency". This means that two clients which have the same nfs file open, cannot...

Brian, Simon, Thanks for your quick answers. Unfortunately neither \n nor \012 works. Under R for Windows (tried on 1.8.0 and 1.5.1) they are automatically converted to chr(13)+chr(10). I need only chr(10...

Dear All, I am searching for a possibility to use the garch estimation with variance targeting, i.e. first estimate the parameter a_0 in a garch model (h_i=a_0+a_1*r_i-1^2+b_1...

Dear list members, i need a hint - i am stuck on my search for a function. I would like to calculate cross-correlograms between two variables (predator and prey densities) and use this as an index of spatial overlap. I...

Dear list, Could someone point me to where package archives are kept? I had downloaded a few tarballs from the website, and installed them, Now I wanted to reproduce this installation on a different machine, but I was unable to...

Hi, can anyone help with two questions concerning persp? (1) Is there a function in R to project points onto a persp() plot, as is in S+ (perspp() I think) ? (2) How can I label and tickmark axes x,y...

Concerning speed and memory efficiency I find as.logical(x) is better than x!=0 and seq(along=x)[as.logical(x)] is better than which(as.logical(x)) thus which(x!=0) is shortest and rfind <- function(x)seq...

Hello together, Is there a tool to test the statistical differences between parameter estimates of an nlsList fit, with more than two groups? I am able to complete the nlme function for two groups after getting starting paramaters in nlsList...

Dear experts, I am trying to INSTALL to R-2.12.1 a package with a high-resolution time (timer_gettime and friends). I learned that I need to compile with the real time option "gcc -lrc" and on my...

I was recently told that it is not allowed to include static covariates in mixed effect models. There should be something written in "Applied Longitudinal Analysis, Fitzmaurice, Laird and Ware, Wiley & Sons, 2004. Chapter 12", however I do not have...

Is it possible creating line plots with symbols so, that the solid line doesn't appear in the symbol background. When I fill the symbols with color the line is still visible behind the symbols (with plot.default(type="o...