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...t want that the script continue. If I use the R windows GUI the script show the error message but it continue till the very end. I want that the script continue to run also in BATCH mode, How can I do that? Many thanks in advance, Fabio ---------------------------------------------------- Fabio Veronesi Ph.D Student Cranfield University School of Applied Sciences Building 37 Cranfield, Bedforshire MK43 0AL tel. +4407984049316

...ctor Vec1<-c(MAD1,MAD2,MAD3,MAD4) but MAD4 is missing and as a consequence R return an error like this: "object 'MAD4' not found" Is it possible to say to R that if it does not find an object it must substitute that object with NA in the vector? Many Thanks, Fabio Mr. Fabio Veronesi Ph.D. student Cranfield University, Bld.37 School of Applied Sciences MK43 0AL Cranfield, Bedfordshire Tel. +44 (0)7984049316 e-mail: f.veronesi@cranfield.ac.uk [[alternative HTML version deleted]]

...9;m using the following lines: pS<-list(a=1,b=1,c=1,d=1) model<-function(pS,xx){pS$a-pS$b*exp(-pS$c*xx^-pS$d)} resid<-function(observed,pS,xx){observed-model(pS,xx)} lin<-nls.lm(pS,resid,observed=Y,xx=X) Why I can't obtain the same results? Many thanks in advance, Fabio Mr. Fabio Veronesi Ph.D. student Cranfield University e-mail: f.veronesi@cranfield.ac.uk [[alternative HTML version deleted]]

Hello, I would like to start running a script from Python with the Rscript command. I tested several ways of invoking R from Python and I finally I succeeded. The problem is that the script starts but R does not recognize the installed packages. I tried simplifying the matter and I created a script.bat with the classic commands: Rscript c:\test.R If I run it by double clicking on it it works

Dear R users, my problem, at the moment, is the following: I need to apply a script to a very big dataset, so I need first to subdivide the dataset into samples and then apply the script to every single sample. Now I tried to solve the problem with these linest: S00001<-data[data$sub==1,1:3] #which divide the dataset in samples based on the number on the column "sub"

...t-- From: samuoko at yahoo.com To: r-help at r-project.org Date: Mon, 23 Aug 2010 14:57:39 +0000 Subject: [R] AUC Hello, Is there is any R function computes the AUC for paired data? Many thanks, Samuel [[alternative HTML version deleted]] --Forwarded Message Attachment-- From: f.veronesi at cranfield.ac.uk To: r-help at r-project.org Date: Mon, 23 Aug 2010 16:01:59 +0100 Subject: [R] Fitting Weibull Model with Levenberg-Marquardt regression method Hi, I have a problem fitting the following Weibull Model to a set of data. The model is this one: a-b*exp(-c*x^d) If I fitted the mode...