On Thu, Oct 18, 2012 at 4:20 PM, Sam Steingold <s...@gnu.org> wrote: >> * R. Michael Weylandt <zvpunry.jrlyn...@tznvy.pbz> [2012-10-18 16:01:37 >> +0100]: >> >> On Thursday, October 18, 2012, Sam Steingold wrote: >> >>> > * Bert Gunter <thagre.ore...@trar.pbz> [2012-10-17 23:21:44 -0700]: >>> > >>> > However, Is level "5" in 'a' the same as level "5" in 'b' ? >>> >>> yes, of course. >>> would anyone want to _different_ factors with identical string >>> representations?! >> >> Off the cuff, studying education and grades: F could be a grade or a >> gender. > > would you ever want to concatenate a vector of grades with a vector of > genders?
You said nothing about having good reasons to do manipulation s thereupon. As I read the question (changing "to" to "two"), you were just asking if two distinct factors might share string representations ;-) Perhaps even better: grades on two different exams: sharing the same level set entirely, but from a statistical point of view, distinct (but likely confounded) Cheers, M ______________________________________________ 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.
