Hi, why don't you use pnorm? E.g.,
pnorm(1, mean = 0.1, sd = 1.2) - pnorm(0, mean = 0.1, sd = 1.2) Matthias ----- original message -------- Subject: Re: [R] Integration + Normal Distribution + Directory Browsing Processing Questions Sent: Sun, 21 Jan 2007 From: Dimitris Rizopoulos<[EMAIL PROTECTED]> > 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 > > > > ______________________________________________ > > [email protected] 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 > > ______________________________________________ > [email protected] 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. > --- original message end ---- -- Dr. rer. nat. Matthias Kohl [EMAIL PROTECTED] www.stamats.de ______________________________________________ [email protected] 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.
