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## Re: [Bug-gsl] levy skew alpha-stable distribution documentation mis-plot

**From**: |
Brian Gough |

**Subject**: |
Re: [Bug-gsl] levy skew alpha-stable distribution documentation mis-plot? |

**Date**: |
Thu, 05 Feb 2009 15:03:51 +0000 |

**User-agent**: |
Wanderlust/2.14.0 (Africa) Emacs/22.2 Mule/5.0 (SAKAKI) |

At Mon, 2 Feb 2009 01:52:41 -0500,
dorkusmonkey wrote:
>* *
>* On p. 218 for my copy of the gsl reference, chapter 19.13 "The Levy*
>* skew alpha-Stable Distribution" I noticed that the plot of the*
>* probability distribution function, p(x), (for alpha=1.0, beta=1.0,*
>* scale=1.0) has a maximum at around y=0.06 or so. I have estimated the*
>* pdf myself and have found the peak for the same parameters to be*
>* nearer to 0.3. Are you sure that the plot of the pdf (p(x)) is*
>* correct?*
>* *
Thanks for the email. You're correct, comparing it against a
histogram of random variates shows the same difference---I must have
generated the plot with different parameters from the ones in the
title. I will regenerate it for the next release.
--
Brian Gough
(GSL Maintainer)
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