[R] Plot histogram and lognormal fit on the same time
bgunter@4567 @end|ng |rom gm@||@com
Thu Jan 21 17:13:44 CET 2021
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.
"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 <leroy using icmpe.cnrs.fr> wrote:
> I would like to plot the histogram of data and fit it with a lognormal
> 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$data)
> fitdistr(histdata$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
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