Thank you. On Fri, Sep 28, 2018 at 5:34 PM William Dunlap <wdun...@tibco.com> wrote: > > Use the 'at' argument to boxplot. E.g., > > > x <- rep(c(2,4,8,16), c(5,10,20,30)) > > y <- seq_along(x) > > par(mfrow=c(2,1)) > > boxplot(y~x, at=unique(x)) > > boxplot(y~x) > > > Bill Dunlap > TIBCO Software > wdunlap tibco.com > > On Fri, Sep 28, 2018 at 3:05 AM, Luigi Marongiu <marongiu.lu...@gmail.com> > wrote: >> >> Dear all, >> I am using boxplot to draw some data. Would be possible to have the >> X-axis linear (as in a scatter plot) instead of the standard >> categorical axis? >> The data I have is subdivided into three groups at the numerical >> values 1, 3, 5; boxplot treats these as categorical values; in fact, I >> can write my own labels simply by using the values 1, 2, 3 for the >> position of the labels as in the example. >> Thank you, >> >> >>>> >> # generate data.frames >> A = c(70, 22, 4, 21, 29, 35, 24, 20, 9, 21, >> 22, 12, 20, 21, 13, 18, 15, 3, 9, 23, >> 6, 5, 2, 24, 25, 21, 16, 0, 4, 1) >> B = c(17, 21, 70, 6, 23, 10, 8, 5, 22, 5, >> 21, 5, 19, 9, 23, 24, 11, 13, 7, 15, >> 25, 9, 13, 14, 11, 9, 12, 0, 5, 9) >> C = c(17, 8, 30, 22, 11, 32, 33, 8, 160, 11, >> 35, 7, 36, 15, 11, 25, 16, 6, 38, 19, >> 35, 30, 12, 27, 22, 32, 47, 39, 31, 26) >> X = rep(c(1, 3, 5),30*3) >> dfA <- data.frame(X, c(A, B, C)) >> names(dfA) <- c("X", "Y") >> par(mfrow=c(2,1)) >> boxplot(dfA$Y ~ dfA$X, >> ylim=c(0, 80), >> col="green", >> ylab="Y-values", >> xlab="X-values", >> main="usual X labels" >> ) >> boxplot(dfA$Y ~ dfA$X, >> ylim=c(0, 80), >> col="green", >> ylab="Y-values", >> xlab="X-values", >> main="custom X labels", >> xaxt="n" >> ) >> x.lab = c("A", "B", "C") >> x.pos = c(1, 2, 3) >> axis(side=1, at=x.pos, >> lab=x.lab, cex.axis=1) >> >> -- >> Best regards, >> Luigi >> >> ______________________________________________ >> 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. > >
-- Best regards, Luigi ______________________________________________ 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.