[R] log-normal distribution fitting with expected value = 1

[R. Michael Weylandt]

Take a look at

fitdist

in the MASS package.

Cheers,
Michael

On Wed, Aug 22, 2012 at 4:23 AM, Biophil <biophilo at gmail.com> wrote:
> Dear R users,
> I would like to estimate mu and sigma of a log-normal distribution, where I
> know that the expected value is 1, as it is a normalized distribution. That
> means as E(x) = exp (mu + 1/2*sigma^2) = 1 that 2*mu = -sigma^2 . Therefore
> I only need to fit one parameter either sigma or mu. How could I do this in
> R?
> Thank you very much for your help!
> biophil
>
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