On Sun, Apr 22, 2012 at 4:43 PM, Michael <comtech....@gmail.com> wrote: > I actually tried "robustPca" in "pcaMethods" on bioconductor. > > It keeps giving me the warning "Input data is not complete"... > > Reading into the function: > > When there is no "NA"s, it will give this warning... > > It seems that there is a bug in this code... > > Is it reliable at all? > > --------------------- > > >> robustPcafunction (Matrix, nPcs = 2, verbose = interactive(), ...) > { > nas <- is.na(Matrix) > if (!any(nas) & verbose) { > cat("Input data is not complete.\n") > cat("Scores, R2 and R2cum may be inaccurate, handle with care\n") > }
that seems to issue the notes when there are *not any missing* and verbose is TRUE. I would submit a bug report to the author. > > > > > > On Fri, Apr 20, 2012 at 9:58 AM, Kevin Wright <kw.s...@gmail.com> wrote: > >> You can also have a look at the pcaMethods package on Bioconductor. >> >> Kevin >> >> >> On Thu, Apr 19, 2012 at 11:20 PM, Michael <comtech....@gmail.com> wrote: >> >>> Hi all, >>> >>> I found that the PCA gave chaotic results when there are big changes in a >>> few data points. >>> >>> Are there "improved" versions of PCA in R that can help with this problem? >>> >>> Please give me some pointers... >>> >>> Thank you! >>> >>> [[alternative HTML version deleted]] >>> >>> ______________________________________________ >>> R-help@r-project.org mailing list >>> https://stat.ethz.ch/mailman/listinfo/r-help >>> PLEASE do read the posting guide >>> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html> >>> and provide commented, minimal, self-contained, reproducible code. >>> >> >> >> >> -- >> Kevin Wright >> >> > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > 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. -- Joshua Wiley Ph.D. Student, Health Psychology Programmer Analyst II, Statistical Consulting Group University of California, Los Angeles https://joshuawiley.com/ ______________________________________________ R-help@r-project.org mailing list 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.