Michael, Use %in% to select multiple cases:
dat[dat$sc_recov %in% c(21, 31, 41), ] ------------------------------------------------------------------------ ---- ir. Thierry Onkelinx Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest Cel biometrie, methodologie en kwaliteitszorg / Section biometrics, methodology and quality assurance Gaverstraat 4 9500 Geraardsbergen Belgium tel. + 32 54/436 185 [EMAIL PROTECTED] www.inbo.be To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher The plural of anecdote is not data. ~ Roger Brinner The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey -----Oorspronkelijk bericht----- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens Michael Just Verzonden: donderdag 2 oktober 2008 10:59 Aan: r-help@r-project.org CC: [EMAIL PROTECTED] Onderwerp: Re: [R] Multiple hist(ograms) - One plot Dieter Menne: Thanks for the suggestion and link, it looks good. I think my trouble now is lack of basic R knowledge. Cheers, Michael For example, I tried: histogram(~bbContag | sc_recov, data=dat) This would work fine if I could select cases from sc_recov. How can I select more than one case? I know I can do: sc_recov.21 <- dat[dat$sc_recov=21,] but how could I select all cases where sc_recov = 21, 31 or 41? On Thu, Oct 2, 2008 at 3:33 AM, Michael Just <[EMAIL PROTECTED]> wrote: > Hello, > If I use: > > p <- ggplot(dat, aes(x=bbContag, y=..density..)) + geom_histogram() > > and then: > > p + facet_grid(. ~ sc_recov) > > Its a little crazy because I have 48 different values in 'sc_recov'. > Instead I want to select cases from 'sc_recov' and only use three at a time: > > I tried: > > p + facet_grid(sc_recov=="21" ~.) > Error in check_formula(formula, varnames) : > Formula contains variables not in list of known variables > > How can I select cases? > > Any ideas or suggestions? > Thanks, > M Just > > On Thu, Oct 2, 2008 at 2:42 AM, ONKELINX, Thierry < > [EMAIL PROTECTED]> wrote: > >> Dear Michael, >> >> Try ggplot2. Use something like >> >> install.packages("ggplot2") >> library(ggplot2) >> recov <- 0:2 >> n <- 1000 >> all <- data.frame(bbED = rnorm(3 * n, mean = recov), recov = >> factor(rep(recov, n))) >> ggplot(data = all, aes(x = bbED)) + geom_histogram() + facet_grid(. ~ >> recov) >> ggplot(data = all, aes(x = bbED)) + geom_histogram() + facet_grid(recov >> ~ .) >> ggplot(data = all, aes(x = bbED, colour = recov)) + geom_density() >> >> You'll find more information on ggplot2 at http://had.co.nz/ggplot2/ >> >> HTH, >> >> Thierry >> >> ------------------------------------------------------------------------ >> ---- >> ir. Thierry Onkelinx >> Instituut voor natuur- en bosonderzoek / Research Institute for Nature >> and Forest >> Cel biometrie, methodologie en kwaliteitszorg / Section biometrics, >> methodology and quality assurance >> Gaverstraat 4 >> 9500 Geraardsbergen >> Belgium >> tel. + 32 54/436 185 >> [EMAIL PROTECTED] >> www.inbo.be >> >> To call in the statistician after the experiment is done may be no more >> than asking him to perform a post-mortem examination: he may be able to >> say what the experiment died of. >> ~ Sir Ronald Aylmer Fisher >> >> The plural of anecdote is not data. >> ~ Roger Brinner >> >> The combination of some data and an aching desire for an answer does not >> ensure that a reasonable answer can be extracted from a given body of >> data. >> ~ John Tukey >> >> -----Oorspronkelijk bericht----- >> Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] >> Namens Michael Just >> Verzonden: donderdag 2 oktober 2008 7:29 >> Aan: r-help@r-project.org >> Onderwerp: [R] Multiple hist(ograms) - One plot >> >> Hello, >> I am trying to plot multiple histograms with the same scales, etc into >> one >> plot. The commands below produce a 3 page PDF with each histogram >> occupying >> the upper right quadrant. And use slightly different scales on the X and >> Y >> axes. >> >> > s21 <- dat[dat$sc_recov=="21",] >> > s21.ED <- subset(s21, select=(bbED)) >> > s31 <- all[all$sc_recov=="31",] >> > s31.ED <- subset(s31, select=(bbED)) >> > s41 <- all[all$sc_recov=="41",] >> > s41.ED <- subset(s41, select=(bbED)) >> > pdf("234_1_ED.pdf") >> > par(mfrow = c(2, 2), oma = c(0, 0, 2, 0)) >> > hist(s21.ED) + hist(s31.ED) + hist(s41.ED) >> > dev.off() >> >> Also, for example if I add something like col="x", or main="x" to the >> hist(x, ...) nothing appears on the plot. ? >> >> Please advise, >> Thank you kindly, >> M Just >> >> [[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. >> >> Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver >> weer >> en binden het INBO onder geen enkel beding, zolang dit bericht niet >> bevestigd is >> door een geldig ondertekend document. The views expressed in this message >> and any annex are purely those of the writer and may not be regarded as >> stating >> an official position of INBO, as long as the message is not confirmed by a >> duly >> signed document. >> > > [[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. Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver weer en binden het INBO onder geen enkel beding, zolang dit bericht niet bevestigd is door een geldig ondertekend document. The views expressed in this message and any annex are purely those of the writer and may not be regarded as stating an official position of INBO, as long as the message is not confirmed by a duly signed document. ______________________________________________ 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.
