[R] computing roots of bessel function

[Robin Hankin]

hi

package(gsl)

calculates zeroes of regular Bessel functions of integral order.

You need function bessel_zero_Jnu()


best wishes

Robn

On Jan 27, 2005, at 11:55 am, coutand wrote:

> I am not yet a R user but I will be soon.
> I am looking for the R command and syntax to compute the roots of 
> Bessel function i.e. computing the z values that lead to Jnu(z)=0 
> where J is a Bessel function or order nu.
> May You help me ?
> thanks in advance.
>
> Dr Catherine COUTAND
> Institut National de la Recherche Agronomique (INRA)
> umr Physiologie Intégrative de l'Arbre Fruitier et Forestier (PIAF)
> 234 av. du Brézet
> 63039 Clermont-Ferrand cedex 02
> France
>
> tel : 00-33-(0)4-73-62-46-73
> fax : 00-33-(0)4-73-62-44-54
> email : coutand at clermont.inra.fr
> http://www.clermont.inra.fr/piaf
>
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--
Robin Hankin
Uncertainty Analyst
Southampton Oceanography Centre
European Way, Southampton SO14 3ZH, UK
  tel  023-8059-7743