thomas@biostat.washington.edu
2000-Aug-24 20:45 UTC
[Rd] Re: [R] too large alpha or beta in dbeta ? (PR#643)
On Thu, 24 Aug 2000, Troels Ring wrote:> Dear friends. > > Is this as expected ? Is alpha and beta too large simply ? > > > dbeta(.1,534,646) > [1] NaN > Warning message: > NaNs produced in: dbeta(x, shape1, shape2, log)well, it should work, but the correct answer is effectively zero. pbeta(.1,534,646) gives 3.6e-213 Perhaps more worrying is> dbeta(.25,534,646)[1] Inf -thomas Thomas Lumley Assistant Professor, Biostatistics University of Washington, Seattle -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._