Thank you, Ben. Best, Ravi
-----Original Message----- From: r-devel-boun...@r-project.org [mailto:r-devel-boun...@r-project.org] On Behalf Of Ben Bolker Sent: Monday, June 02, 2014 8:07 PM To: r-de...@stat.math.ethz.ch Subject: Re: [Rd] A bug in princomp(), perhaps? Ben Bolker <bbolker <at> gmail.com> writes: > > FWIW this seems to be a FAQ: > > https://stat.ethz.ch/pipermail/r-devel/2003-July/027018.html > > http://thr3ads.net/r-devel/2013/01/ > 2171832-Re-na.omit-option-in-prcomp-formula-interface-only > > http://r.789695.n4.nabble.com/ > na-omit-option-in-prcomp-formula-interface-only-td4373533.html > > And two StackOverflow questions (the latter's a bit tangential): > > http://stackoverflow.com/questions/12078291/ > r-function-prcomp-fails-with-nas-values-even-though-nas-are-allowed > > http://stackoverflow.com/questions/23421438/ > what-was-wrong-with-running-princomp-in-r/23446938#23446938 > > (Sorry for broken URLs and random assortment of mailing list > aggregators.) > > I appreciate Gavin's points that implementing this stuff for > princomp.default is difficult/problematic, but I second Ravi's request > for a little more clarification in the help text; it's quite easy to > miss the fact that 'na.action' is defined for princomp.formula but not > for princomp.default. Perhaps just "Note that setting na.action works > for princomp.formula, but not for princomp.default" (under the > "na.action" argument description). Putting my effort where my mouth is: I wonder if there is any chance that this patch against the current SVN would be accepted ... ?? Index: princomp.Rd =================================================================== --- princomp.Rd (revision 65832) +++ princomp.Rd (working copy) @@ -37,7 +37,8 @@ when the data contain \code{NA}s. The default is set by the \code{na.action} setting of \code{\link{options}}, and is \code{\link{na.fail}} if that is unset. The \sQuote{factory-fresh} - default is \code{\link{na.omit}}.} + default is \code{\link{na.omit}}. (This argument applies \emph{only} + to the formula method.)} \item{x}{a numeric matrix or data frame which provides the data for the principal components analysis.} \item{cor}{a logical value indicating whether the calculation should Index: prcomp.Rd =================================================================== --- prcomp.Rd (revision 65832) +++ prcomp.Rd (working copy) @@ -40,7 +40,8 @@ when the data contain \code{NA}s. The default is set by the \code{na.action} setting of \code{\link{options}}, and is \code{\link{na.fail}} if that is unset. The \sQuote{factory-fresh} - default is \code{\link{na.omit}}.} + default is \code{\link{na.omit}}. (This argument applies \emph{only} + to the formula method.)} \item{\dots}{arguments passed to or from other methods. If \code{x} is a formula one might specify \code{scale.} or \code{tol}.} \item{x}{a numeric or complex matrix (or data frame) which provides ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel