Gavin, I agree w.r.t. documenting all arguments. However, it is quite natural to expect that something as basic as `na.actionâ would work for more generally than with only one particular type of usage. Why should the behavior of princomp(x, â¦), where x is a data matrix or dataframe be any different than when a formula is provided, with regards to the NA action? It should be easy enough to remove the rows of `xâ with NAs. This is my main point.
Ravi From: Gavin Simpson [mailto:ucfa...@gmail.com] Sent: Friday, May 30, 2014 10:46 AM To: Ravi Varadhan Cc: peter dalgaard; r-devel@r-project.org Subject: Re: [Rd] A bug in princomp(), perhaps? Ravi, You mean something /more/ explicit than the Usage section, wherein `na.action` only exists in the formula method? I doubt we'd want RCore to go down the road of documenting all the arguments that do/don't work with particular methods included in an Rd file, beyond the Usage section. G On 30 May 2014 06:33, Ravi Varadhan <ravi.varad...@jhu.edu<mailto:ravi.varad...@jhu.edu>> wrote: Thank you, Peter. Now I see that. I still think the documentation of `na.action' can be made more explicit to state that this option is only used for princomp.formula. Best regards, Ravi -----Original Message----- From: peter dalgaard [mailto:pda...@gmail.com<mailto:pda...@gmail.com>] Sent: Friday, May 30, 2014 5:15 AM To: Ravi Varadhan Cc: r-devel@r-project.org<mailto:r-devel@r-project.org> Subject: Re: [Rd] A bug in princomp(), perhaps? It's only documented to work for princomp.formula; other methods do not know about na.action. -pd On 29 May 2014, at 22:10 , Ravi Varadhan <ravi.varad...@jhu.edu<mailto:ravi.varad...@jhu.edu>> wrote: > Hi, > It may be my misunderstanding, but it seems that the "na.action" in the > princomp() function for principal components analysis does not work. Please > see this simple example: > > u <- matrix(rnorm(75), ncol=1) > v <- matrix(rnorm(20), ncol=1) > x <- u%*%t(v) + matrix(rnorm(20*75),ncol=20) x[1,1] <- NA pc.out <- > princomp(x, na.action=na.exclude) Error in cov.wt(z) : 'x' must > contain finite values only >> > > Note, I have: >> options("na.action") > $na.action > [1] "na.omit" > > Thanks, > Ravi > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel@r-project.org<mailto:R-devel@r-project.org> mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501<tel:%28%2B45%2938153501> Email: pd....@cbs.dk<mailto:pd....@cbs.dk> Priv: pda...@gmail.com<mailto:pda...@gmail.com> ______________________________________________ R-devel@r-project.org<mailto:R-devel@r-project.org> mailing list https://stat.ethz.ch/mailman/listinfo/r-devel -- Gavin Simpson, PhD [[alternative HTML version deleted]]
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