Sorry, Bert. The fitdistr function estimates parameters via maximum likelihood. (i.e. The "lognormal" part of this, is not a kernel).
On Fri, Jan 22, 2021 at 5:14 AM Bert Gunter <bgunter.4...@gmail.com> wrote: > > In future, you should try to search before posting. I realize that getting > good search terms can sometimes be tricky, but not in this case: 'plot > density with histogram in R' or similar on rseek.org or just on your usual > search platform brought up several ways to do it. > > As a (slightly offtopic) side issue, be careful with this: both histograms > and smooth density estimates are just that: density **estimates** that > depend on both the data and various parameters, e.g. the location of the > bins for histograms and kernel for kernel density estimates. You may > therefore get plots where the two do not appear to "match" when you use the > defaults for each. > > > Bert Gunter > > "The trouble with having an open mind is that people keep coming along and > sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) > > > On Thu, Jan 21, 2021 at 3:54 AM Eric Leroy <le...@icmpe.cnrs.fr> wrote: > > > Hi, > > > > I would like to plot the histogram of data and fit it with a lognormal > > distribution. > > > > The ideal, would be to superimpose the fit on the histogram and write > > the results of the fit on the figure. > > > > Right now, I was able to plot the histogram and fit the density with a > > lognormal, but I can't combine all together. > > > > Here is the code I wrote : > > > > histdata <- hist(dataframe$data) > > > > library(MASS) > > > > fitdistr(histdata$density, "lognormal") > > > > Can you help me ? > > > > Best regards, > > > > -- > > > > *Eric Leroy* > > > > /Responsable de la plateforme microscopie électronique/ > > > > /Correspondant Sécurité des Systèmes Informatiques de l'ICMPE/ > > > > ICMPE - UMR 7182 - CNRS - UPEC > > > > 2/8, rue Henri Dunant > > > > 94320 Thiais > > > > Tél : 01.49.78.12.09 > > > > Fax : 01.49.78.12.03 > > > > courriel : le...@icmpe.cnrs.fr <mailto:le...@icmpe.cnrs.fr> > > > > Page Web : : http://www.icmpe.cnrs.fr <http://www.icmpe.cnrs.fr> > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > 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. > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
