R help - Aug 2008 - Weibull Likelihod function.

Is there a likelihod function for the Weibull distribution in 'R'? I
found the following reference:

http://www.weibull.com/LifeDataWeb/weibull_log_likelihood_functions_and_their_partials.htm

But I had a hard time understanding the parameters required Particularly
'number of groups of times-to-failure data points", "number of
groups of suspension data points", and "number of interval failure
data groups".

Maybe if there is a likelihood function within 'R' the documentation
will be a little better and contain some examples.

I would like the likelihood function for some Bayesian inference and the Weibull
distribution seems to closely resemble my prior data distribution.

Thank you.

Kevin

For a log-likelihood, just  sum values of dweibull(x, log=TRUE)

On Wed, 6 Aug 2008, rkevinburton at charter.net wrote:
> Is there a likelihod function for the Weibull distribution in 'R'?
I found the following reference:
>
>
http://www.weibull.com/LifeDataWeb/weibull_log_likelihood_functions_and_their_partials.htm
>
> But I had a hard time understanding the parameters required Particularly
'number of groups of times-to-failure data points", "number of
groups of suspension data points", and "number of interval failure
data groups".
>
> Maybe if there is a likelihood function within 'R' the
documentation will be a little better and contain some examples.
>
> I would like the likelihood function for some Bayesian inference and the
Weibull distribution seems to closely resemble my prior data distribution.
>
> Thank you.
>
> Kevin
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
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