--- On Thu, 11/11/10, William Dunlap <wdun...@tibco.com> wrote:
> From: William Dunlap <wdun...@tibco.com> > Subject: Re: [R] Populating then sorting a matrix and/or data.frame > To: "Peter Langfelder" <peter.langfel...@gmail.com>, r-help@r-project.org > Received: Thursday, November 11, 2010, 4:19 PM > Peter, > > Your example doesn't work for me unless I > set options(stringsAsFactors=TRUE) first. Don't you mean stringsAsFactors=FALSE here? At least I get the same results you do but with stringsAsFactors=FALSE The TRUE condition is giving multiple NAs and error messages > (If I do set that, then all columns of 'results' > have class "character", which I doubt the user > wants.) > > > results <- data.frame() > > > > n = 10 > > for(i in 1:n){ > + a = LETTERS[i]; > + b = i; > + c = 3*i + 2 > + d = rnorm(1); > + results <- rbind(results, c(a,b,c,d)) > + } > There were 36 warnings (use warnings() to see them) > > warnings()[1:5] > $`invalid factor level, NAs generated` > `[<-.factor`(`*tmp*`, ri, value = "B") > > $`invalid factor level, NAs generated` > `[<-.factor`(`*tmp*`, ri, value = "2") > > $`invalid factor level, NAs generated` > `[<-.factor`(`*tmp*`, ri, value = "8") > > $`invalid factor level, NAs generated` > `[<-.factor`(`*tmp*`, ri, value = "-0.305558353507095") > > $`invalid factor level, NAs generated` > `[<-.factor`(`*tmp*`, ri, value = "C") > > > results > X.A. X.1. X.5. X.1.43055780028799. > 1 A 1 > 5 1.43055780028799 > 2 <NA> <NA> <NA> > <NA> > 3 <NA> <NA> <NA> > <NA> > 4 <NA> <NA> <NA> > <NA> > 5 <NA> <NA> <NA> > <NA> > 6 <NA> <NA> <NA> > <NA> > 7 <NA> <NA> <NA> > <NA> > 8 <NA> <NA> <NA> > <NA> > 9 <NA> <NA> <NA> > <NA> > 10 <NA> <NA> <NA> > <NA> > > Bill Dunlap > Spotfire, TIBCO Software > wdunlap tibco.com > > > -----Original Message----- > > From: r-help-boun...@r-project.org > > > [mailto:r-help-boun...@r-project.org] > On Behalf Of Peter Langfelder > > Sent: Thursday, November 11, 2010 12:25 PM > > To: Noah Silverman > > Cc: r-help@r-project.org > > Subject: Re: [R] Populating then sorting a matrix > and/or data.frame > > > > On Thu, Nov 11, 2010 at 11:33 AM, Noah Silverman > > <n...@smartmediacorp.com> > wrote: > > > Still doesn't work. > > > > > > When using rbind to build the data.frame, it get > a > > structure mostly full of > > > NA. > > > The data is correct, so something about pushing > into the > > data.frame is > > > breaking. > > > > > > Example code: > > > results <- data.frame() > > > > > > for(i in 1:n){ > > > #do all the work > > > #a is a test label. b,c,d are numeric. > > > results <- rbind(results, c(a,b,c,d)) > > > } > > > > Works for me: > > > > results <- data.frame() > > > > n = 10 > > for(i in 1:n){ > > a = LETTERS[i]; > > b = i; > > c = 3*i + 2 > > d = rnorm(1); > > results <- rbind(results, c(a,b,c,d)) > > } > > > > > > > results > > > > X.A. X.1. X.5. X.0.142223304589023. > > 1 A 1 > 5 0.142223304589023 > > 2 B 2 > 8 0.243612305595176 > > 3 C > 3 11 0.476795513990516 > > 4 D > 4 14 1.0278220664213 > > 5 E > 5 17 0.916608672305205 > > 6 F > 6 20 > 1.61075985995586 > > 7 G > 7 23 0.370423691258896 > > 8 H > 8 26 -0.0528603547004191 > > 9 I > 9 29 -2.07888666920403 > > 10 > J 10 32 > -1.87980721733655 > > > > Maybe there's something wrong with the calculation you > do? > > > > Peter > > > > ______________________________________________ > > 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. > > > > ______________________________________________ > 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. > ______________________________________________ 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.