> -----Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of William Dunlap > Sent: Monday, March 22, 2010 9:31 AM > To: Martin Batholdy; r help > Subject: Re: [R] add information above bars of a barplot() > > > -----Original Message----- > > From: r-help-boun...@r-project.org > > [mailto:r-help-boun...@r-project.org] On Behalf Of Martin Batholdy > > Sent: Monday, March 22, 2010 7:53 AM > > To: r help > > Subject: [R] add information above bars of a barplot() > > > > hi, > > > > > > I have a barplot with six clusters of four bars each. > > Now I would like to add the exact value of each bar as a > > number above the bar. > > > > I hoped to get some tips here. > > I could simply add text at the different positions, but I > > don't understand how the margins on the x-axis are calculated > > (how can I get / calculate the x-ticks of a barplot?). > > > > Also I would like to code this flexible enough so that it > > still works when I have more bars in each cluster. > > You didn't say how you made the original barplot, but > here is one way use barplot()'s return value (the > x coordinates of the bar centers) to add text a little > above the top of each bar: > > z <- rbind(log2(1:10), sqrt(1:10), (1:10)/3) # data matrix > barX <- barplot(z, beside=TRUE) > text(cex=.5, x=barX, y=z+par("cxy")[2]/2, round(z,2), xpd=TRUE) > > The xpd=TRUE means to not plot the text even if it is outside ^^^^^^^^ : I meant either "not clip" or "plot" > of the plot area and par("cxy") gives the size of a typical > character in the current user coordinate system. > > Bill Dunlap > Spotfire, TIBCO Software > wdunlap tibco.com > > > > > > > > > thanks for any suggestions! > > > > ______________________________________________ > > 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.
