[R] defining a function using strings

[Gabor Grothendieck]

Try this (to evaluate them at 10):

polynomial.values(l, 10)


On Thu, Oct 16, 2008 at 2:40 PM, Chernomoretz Ariel <algo107 at gmail.com> wrote:
> Hi All,
> I need to evaluate a series expansion using Legendre polynomials.
> Using the 'orthopolinom' package I can get a list of the first n
> Legendre polynomials as character strings.
>
>> library(orthopolynom)
>> l<-legendre.polynomials(4)
>> l
> [[1]]
> 1
>
> [[2]]
> x
>
> [[3]]
> -0.5 + 1.5*x^2
>
> [[4]]
> -1.5*x + 2.5*x^3
>
> [[5]]
> 0.375 - 3.75*x^2 + 4.375*x^4
>
> But I can't figure out how to implement functions that could be
> evaluated for arbitrary 'x', from this list,
> Thanks for your help.
>
> Ariel./
>
>
> --
>  Dr. Ariel Chernomoretz
>       Departamento de Fisica, FCEyN,        Universidad de Buenos Aires,
>       (1428) Ciudad Universitaria,        Ciudad de Buenos Aires, Argentina.
>       TE +54 11 4576 3390 ext 817
>       Fax +54 11 4576 3357
>       email: ariel at df.uba.ar        Webpage: http://www.df.uba.ar/users/ariel
>
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