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...gh after three times the message " Error in read.table("file.txt", header = T, sep = ";") : no lines available in input " is shown, the program stops. Is there another way of checking if I can try to read a file? Thanks in advance, Reagrds, Marlon !!! marlon at lscp.pqi.ep.usp.br

...gt; 30. dsn (Margarida J?lia Rodrigues Igreja) > 31. Re: lm - significance disappears (Prof Brian Ripley) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 07 Mar 2004 13:21:56 +0100 > From: pallier <pallier at lscp.ehess.fr> > Subject: Re: [R] "Statistiques avec R" > To: r-help <r-help at stat.math.ethz.ch> > Message-ID: <404B13E4.8010909 at lscp.ehess.fr> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Shigeru Mase wrote: > > > > >...

Hello Coming from matlab background, I could use some help on this one. I need to generate a data set based on this equation X(t) = 3.8x(t-1) (1-x(t-1)) + e(t), where e(t) is a N(0,0,001) random variable I need say 100 values. How do I do this? Thanks

Hello, I am running R under Linux/x11. I would like to call R from a shell script and have it display a series of graphics. The graphics should remain visible until the user clicks or presses a key. I first tried R BATCH, but it does not load the x11 module, making it impossible to open x11 or png devices. Then, I tried to call R with a 'here' script: R --vanilla --quiet --args

Hello, I use the function 'aggregate' a lot. One small annoyance is that it is necessary to name the factors in the 'by' list to get the names in the resulting data.frame (else, they appear as Group.1, Group.2...etc). For example, I am forced to write: aggregate(y,list(f1=f1,f2=f2),mean) instead of aggregate(y,list(f1,f2),mean) (for two factors with short names, it is not such

Dear All, I am doing some exercise in statistics textbook on comparison of two experimental means. Is it possible to use t.test() do t-test when I have only two means, sample size, two standard deviations ? (no raw data). Thanks. Pramote

Hello, I had been thinking for years, without having ever checked (shame on me), that indexing a named vector by a factor 'f' produced the same results as indexing it by 'as.character(f)'. I was wrong, as the following example shows: (m <- c(a=1,b=2)) (f <- factor(c(1,2),labels=c('b','a'))) m[f] m[as.character(f)] m[as.numeric(f)] When the

Dear all, I've started working with R (vs 1041) a few weeks ago, and now I'm having problems with the amount of memory. I'm working on the windows-me, my computer has 128 Mb of memory. I'm using the R under the emacs (ESS-5.1.20) and it is started by the command: Rterm --min-vsize=10M --max-vsize=100M --min-nsize=500k --max-nsize=1M I've been had problems when executing a

Hello, I routinely use aov and and the Error term to perform analyses of variance of experiments with 'within-subject' factors. I wonder whether a notion like 'multistratum models' exists for glm models when performing a logit analysis (without being 100% sure whether this would make sense). I have data of an experiment where the outcome is a categorical variable: 20