I have followed all instruction in R FAQ Section 9.2 This looks like a bug to me
"C:\Program Files\R\R-2.3.1\bin\Rgui.exe" --sdi > version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 2 minor 3.1 year 2006 month 06 day 01 svn rev 38247 language R version.string Version 2.3.1 (2006-06-01) > # If a command you are familiar with causes an R error message in a # case where its usual definition ought to be reasonable, it is # probably a bug. call to pt with ncp < 10^-5 Warning message: full precision was not achieved in 'pnt' # # example > nc [1] 1e-01 1e-02 1e-03 1e-04 1e-05 1e-06 1e-07 0e+00 > cnpt function(p,df,nc){ pt( qt(p,df),df,nc) } > cnpt(.95,10,nc) [1] 0.9395967 0.9490285 0.9499035 0.9499904 0.9499990 0.9499999 0.9500000 [8] 0.9500000 Warning messages: 1: full precision was not achieved in 'pnt' 2: full precision was not achieved in 'pnt' 3: full precision was not achieved in 'pnt' > sessionInfo() Version 2.3.1 (2006-06-01) i386-pc-mingw32 attached base packages: [1] "methods" "stats" "graphics" "grDevices" "utils" "datasets" [7] "base" ># quit 2.3.1 >q() ### run 2.2.1 "C:\Program Files\R\R-2.2.1\bin\Rgui.exe" --sdi > version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 2 minor 2.1 year 2005 month 12 day 20 svn rev 36812 language R > cnpt(.95,10,nc) [1] 0.9395967 0.9490285 0.9499035 0.9499904 0.9499990 0.9499999 0.9500000 [8] 0.9500000 > # no warning message in previous versions of R ========================================================================= Thanks for your advise on this issue Ed Frome http://www.csm.ornl.gov/~frome/ [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel