Hello! I am a beginner to R. I have read several guides, but still am stuck on this:
I have data in an excel csv file, on which I want to run PCA. I'm not sure how the prcomp formula works. The help page states: prcomp(x, retx = TRUE, center = TRUE, scale. = FALSE, tol = NULL, ...) what is x referring to? I tried putting the file name for x, but i get the following error: Error in colMeans(x, na.rm = TRUE) : 'x' must be numeric what kind of numeric value do I need to put in for x? Potentially helpful information: my data sheet has around 48 columns and over 7000 rows. I have converted the csv file into a matrix in R. Thanks in advance for all your help. I'd appreciate step by step instructions on how to go from my csv file to a PCA biplot in R. [[alternative HTML version deleted]] ______________________________________________ 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.