Sounds like one of your data columns is constant. The variance of a constant is 0, and scaling would then divide by 0, which is impossible.
Kevin Wright On Wed, Oct 31, 2012 at 7:47 AM, fillay89 <jasonf...@gmail.com> wrote: > I am trying to run the R Script below, I have actually simplified it to > just > this part that is causing issues. When I run this script I continue to get > an error that says "cannot rescale a constant/zero column to a unit > variance". I cannot figure out what is going on here. I have stripped > down > my data file so it is more manageable so I can try to figure this out. > > The data.txt file that is being read looks like this: > > > I have made this file very basic on purpose to see if I could get this to > work, but it is not working. Of course once I get this to actually work I > will expand the data file to match the data I am actually using. > > > > If I change the attribute in the prcomp function to scale=FALSE of course I > can run my script. But if it is scaling...which is causing the issues, it > errors. > > Any help would be GREATLY appreciated. > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Cannot-rescale-a-constant-zero-column-error-tp4647996.html > Sent from the R help mailing list archive at Nabble.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. > -- 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.
