Jerry.Lewis at biogenidec.com
2008-Oct-09 17:20 UTC
[Rd] solve cdf for noncentrality (PR#11527)
Full_Name: Jerry W. Lewis Version: 2.7.0 OS: Windows XP Professional Submission from: (NULL) (198.180.131.16) If you are saying that there is no need to solve for the noncentrality parameter, please justify this amazing assertion. If you are saying that this need is already adequately addressed in R, then please enlighten me.
ligges at statistik.tu-dortmund.de
2008-Oct-11 19:25 UTC
[Rd] solve cdf for noncentrality (PR#11527)
Jerry.Lewis at biogenidec.com wrote:> Full_Name: Jerry W. Lewis > Version: 2.7.0 > OS: Windows XP Professional > Submission from: (NULL) (198.180.131.16) > > > If you are saying that there is no need to solve for the noncentrality > parameter, please justify this amazing assertion.- He? What noncentrality are you talking about? - You are reporting a bug with an outdated version of R. - You have not followed the guide on how to report bugs in R. Uwe Ligges> If you are saying that this need is already adequately addressed in R, then > please enlighten me. > > ______________________________________________ > R-devel at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel
jerry.lewis at biogenidec.com
2008-Oct-14 13:45 UTC
[Rd] solve cdf for noncentrality (PR#11527)
R implementations of Student's t, chi-squared, F, and beta distributions all support noncentrality parameters. There is often a need (for example in sample size problems) to invert the cdf to obtain the noncentrality parameter given the quantile, instead of to obtain the quantile given the noncentrality (as the q... functions do). For example, in SAS, these functions are called TNONCT, CNONCT, and FNONCT. I believe that 2.7.0 was the current version when I submitted this on 27 May, 2008. If it has been subsequently addressed, I can find no mention of it either in the 2.7.2 Reference Manual or in today's https://svn.r-project.org/R/trunk/NEWS Jerry Uwe Ligges <ligges at statistik.tu-dortmund.de> wrote> > Jerry.Lewis at biogenidec.com wrote: > > Full_Name: Jerry W. Lewis > > Version: 2.7.0 > > OS: Windows XP Professional > > Submission from: (NULL) (198.180.131.16) > > > > > > If you are saying that there is no need to solve for the noncentrality > > parameter, please justify this amazing assertion. > > - He? What noncentrality are you talking about? > - You are reporting a bug with an outdated version of R. > - You have not followed the guide on how to report bugs in R. > > Uwe Ligges > > > > If you are saying that this need is already adequately addressed in R,then> > please enlighten me.[[alternative HTML version deleted]]
ligges at statistik.tu-dortmund.de
2008-Oct-14 13:50 UTC
[Rd] solve cdf for noncentrality (PR#11527)
Jerry Lewis wrote:> R implementations of Student's t, chi-squared, F, and beta distributions > all support noncentrality parameters. There is often a need (for example > in sample size problems) to invert the cdf to obtain the noncentrality > parameter given the quantile, instead of to obtain the quantile given the > noncentrality (as the q... functions do). For example, in SAS, these > functions are called TNONCT, CNONCT, and FNONCT. > > I believe that 2.7.0 was the current version when I submitted this on 27 > May, 2008. If it has been subsequently addressed, I can find no mention > of it either in the 2.7.2 Reference Manual or in today's > https://svn.r-project.org/R/trunk/NEWSThanks for the clarification. I was not aware you were citing an old bug report, because you had not cited anything in your message except for the old PR#. Uwe Ligges> Jerry > > Uwe Ligges <ligges at statistik.tu-dortmund.de> wrote >> Jerry.Lewis at biogenidec.com wrote: >>> Full_Name: Jerry W. Lewis >>> Version: 2.7.0 >>> OS: Windows XP Professional >>> Submission from: (NULL) (198.180.131.16) >>> >>> >>> If you are saying that there is no need to solve for the noncentrality >>> parameter, please justify this amazing assertion. >> - He? What noncentrality are you talking about? >> - You are reporting a bug with an outdated version of R. >> - You have not followed the guide on how to report bugs in R. >> >> Uwe Ligges >> >> >>> If you are saying that this need is already adequately addressed in R, > then >>> please enlighten me.
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