How can I add attachments? The following two files were attached in the initial message
On Tue, Apr 2, 2019 at 3:34 PM Bert Gunter <bgunter.4...@gmail.com> wrote: > Nothing was attached. The r-help server strips most attachments. Include > your code inline. > > Also note that > > > 0/0 > [1] NaN > > so maybe something like that occurs in the course of your calculations. > But that's just a guess, so feel free to disregard. > > > Bert Gunter > > "The trouble with having an open mind is that people keep coming along and > sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) > > > On Tue, Apr 2, 2019 at 11:32 AM Eric Bridgeford <ericw...@gmail.com> > wrote: > >> Hi R core team, >> >> I experienced the following issue with the attached data/code snippet, >> where the studentized residual for a single observation appears to be NaN >> given finite predictors/responses, which appears to be driven by the >> glm.influence method in the stats package. I am curious to whether this is >> a consequence of the specific implementation used for computing the >> influence, which it would appear is the driving force for the NaN >> influence >> for the point, that I was ultimately able to trace back through the >> lm.influence method to this specific line >> < >> https://github.com/SurajGupta/r-source/blob/a28e609e72ed7c47f6ddfbb86c85279a0750f0b7/src/library/stats/R/lm.influence.R#L67 >> > >> which >> calls C code which calls iminfl.f >> < >> https://github.com/SurajGupta/r-source/blob/master/src/library/stats/src/lminfl.f >> > >> (I >> don't know fortran so I can't debug further). My understanding is that the >> specific issue would have to do with the leave-one-out variance estimate >> associated with this particular point, which it seems based on my >> understanding should be finite given finite predictors/responses. Let me >> know. Thanks! >> >> Sincerely, >> >> -- >> Eric Bridgeford >> ericwb.me >> ______________________________________________ >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > -- Eric Bridgeford ericwb.me ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
