Dear All I would like to draw a picture with the density curve of a normal distribution over a histogram of a set of random numbers extracted from the same normal distribution. Is that possible? Thanks in advance, Paul
On Wed, 27 Apr 2005 19:06:07 +0100 Paul Smith wrote:> Dear All > > I would like to draw a picture with the density curve of a normal > distribution over a histogram of a set of random numbers extracted > from the same normal distribution. Is that possible?To quote Simon `Yoda' Blomberg: "This is R. There is no if. Only how." (see fortune("Yoda")) Try: R> x <- rnorm(100) R> hist(x, freq = FALSE) R> curve(dnorm, col = 2, add = TRUE) Z> Thanks in advance, > > Paul > > ______________________________________________ > R-help at 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 >
Paul Smith wrote:> Dear All > > I would like to draw a picture with the density curve of a normal > distribution over a histogram of a set of random numbers extracted > from the same normal distribution. Is that possible?Yes. If you like to know how, see e.g. ?hist and ?curve. Uew Ligges> Thanks in advance, > > Paul > > ______________________________________________ > R-help at 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
Le 27 Avril 2005 14:06, Paul Smith a ??crit??:> I would like to draw a picture with the density curve of a normal > distribution over a histogram of a set of random numbers extracted > from the same normal distribution. Is that possible?Sure. See curve() with add=TRUE. Don't forget to use prob=TRUE when plotting your histogram, though. Vincent
Paul Smith <phhs80 at gmail.com> writes:> Dear All > > I would like to draw a picture with the density curve of a normal > distribution over a histogram of a set of random numbers extracted > from the same normal distribution. Is that possible?Yes. If you look at the scripts that go with the ISwR package, you'll find a detailed example in ch01.R (end of 1.3/beginning of 1.4). Or you could read the book, of course... -- O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907