I would use "melt" from the reshape package so that "sample" could be used, rather than trying to process various selections of columns from a wide data.frame.
"Addi Wei" <addi...@gmail.com> wrote: > >Sorry to post multiple questions, but this is still related to the sample >function. > >In my previous example, how do I save/store the current sample so when I run >sample again (after analysis) I can exclude the samples that were previously >chosen. > >For example if I have 180 factors or columns...and I sample 10 from the data >set using: >sample10 <- sample(data, 10, replace=FALSE) > >##and then from this sample of 10, I'll run my analysis, and then I wish to >randomly replace 3 samples out of 10, with 3 new factors from the list of >180 factors (that have not been chosen thus far). I wish to store all the >factors that have been chosen for analysis into an object to avoid me going >back and picking those same factors again.... >-- >View this message in context: >http://r.789695.n4.nabble.com/Want-to-exclude-a-column-when-using-sample-function-tp2287988p2289118.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. --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity. ______________________________________________ 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.
