you can use the `...' argument of integrate, e.g., integrate(dnorm, 0, 1) integrate(dnorm, 0, 1, mean = 0.1) integrate(dnorm, 0, 1, mean = 0.1, sd = 1.2)
look at ?integrate for more info. I hope it helps. Best, Dimitris ---- Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm Quoting Nils Hoeller <[EMAIL PROTECTED]>: > Hi everyone, > > I am new to R, but it's really great and helped me a lot! > > But now I have 2 questions. It would be great, if someone can help me: > > 1. I want to integrate a normal distribution, given a median and sd. > The integrate function works great BUT the first argument has to be a > function > > so I do integrate(dnorm,0,1) and it works with standard m. and sd. > > But I have the m and sd given. > > So for fixed m and sd I work around with a new function mynorm > > mynorm <- function(n) { > ret <- dnorm(n,0.6,0.15) > ret > } > > for example. > > BUT what can I do for dynamic m and sd? > I want something like integrate(dnorm(,0.6,0.15),0,1), with the first > dnorm parameter open for the > integration but fixed m and sd. > > I hope you can help me. > > 2. I am working with textfiles with rows of measure data. > read.table("file") works fine. > > Now I want R to read.table all files within a given directory and > process them one by the other. > > for(all files in dir xy) { > x <- read.table(nextfile) > process x > } > > Is that possible with R? I hope so. Can anyone give me a link to examples. > > Thanks for your help > > Nils > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.