title: Fit Landau distribution over a histogram in R
body: <p>I am currently working with a dataset of a sensor detecting Strontium-90 beta minus emission. I have succesfully built an histogram of energies and, as I would expect, i get a &quot;Landau-like&quot; spectrum (typical of energy decay in a thin absorber).
  Now i'd like to overlay a the Landau curve that best fits my data (the same way it's frequently done with a normal distribution); however I can't find any useful resource online, neither for the landau itself nor for the moyal function.</p>
  <p>Any ideas?</p>
  <p>edit:
  I both need to get the parameters of the landau that best fits and to plot it over my histogram.
  The moyal function is an approximation of the landau with a definite formula (instead of a PDF).</p>