On Sun, Jun 12, 2011 at 12:44 PM, Tiago Pereira
<tiago.pere...@mbe.bio.br> wrote:
> The test I am working on has an asymptotic 0.5*chi2(1)+0.5*chi2(2)
> distribution, where numbers inside parenthesis stand for the degrees of
> freedom. Is is possible to compute quickly in R the cumulative distribution
> of that distribution?
>
There appear to be pchibar() functions in both the ibdreg and ic.infer
packages that should do want you want. Simulation is also fairly
efficient.
-thomas
--
Thomas Lumley
Professor of Biostatistics
University of Auckland
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