Re: [R] integrate fails with errors

From: Thomas Lumley <tlumley_at_u.washington.edu>
Date: Wed 20 Jul 2005 - 03:53:46 EST

On Tue, 19 Jul 2005, [iso-8859-1] herodote@oreka.com wrote:

>
> beta0,eta0,n are initialized as single integer, temp is a 1 dimension array containing 9 integer.
>
> integrate(function(beta) ((beta/(eta0)^beta)^n)*prod(temp^(1-beta)*exp(-sum(temp^beta)/(eta^beta)))*(1/(sqrt(2*pi))*exp(((beta-beta0)^2,0,Inf)
>
> R says : The longuest object isn't a multiple of the shortest object in temp^beta , the same for temp^(1-beta).
>
> I don't understand why R fails to take calculate each temp^beta then sum it over again for each beta values.
>

The help page for integrate() says

     f: an R function taking a numeric first argument and returning a
           numeric vector of the same length.

Your f is not of that form.

         -thomas



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