Hi Felipe, It sounds like ForkLength is a factor - what deos str(FL) tell you? You might also need geom_bar(..., stat = "identity") since your data are pretabulated.
Hadley On Fri, Dec 26, 2008 at 2:44 PM, Felipe Carrillo <mazatlanmex...@yahoo.com> wrote: > Wayne: > What's crowded are my x axis labels. The bars look fine on my graph but the > labels are being displayed from 29 to 170 one by one. I need something like a > seq(29,170 by:10) or something like that. I don't want to treat my FL as > factor because I don't want a bar per each FL value, I only want to count the > number of FL at any given FL size. Thanks > > > --- On Thu, 12/25/08, Wayne F <wd...@mac.com> wrote: > >> From: Wayne F <wd...@mac.com> >> Subject: Re: [R] ggplot2 Xlim >> To: r-help@r-project.org >> Date: Thursday, December 25, 2008, 2:43 PM >> I'm just a ggplot2 beginner, but... >> >> It seems to me that you're mixing continuous and factor >> variables/concepts. >> It looks to me as if ForkLength and Number are continuous >> values. But you'll >> need to convert ForkLength into a factor before using >> geom="bar". I do that >> and the graph "works" but the bars are extremely >> busy, which I assume is >> what you mean by "crowded". >> >> As I try several different things, I'm seeing error >> messages. Are you not >> seeing error messages? >> >> Is the bottom line that you simply want to display some >> continuous data in a >> histogram-ish style, and you don't like the default >> "binning" of Number for >> each of many ForkLengths? >> >> If you simply use geom="line", things look clear >> and simple, no need to bin >> or simplify or... >> >> If you do end up using geom="bar", I believe the >> mistake you're making -- >> and I see an error message when I try -- is that you are >> using >> scale_x_continuous whereas the X axis is discrete, so you >> should be using >> scale_x_discrete. But then it will take some R magic to >> combine your "bins" >> into wider bins so you get a "less crowded" look. >> >> Or perhaps I'm misunderstanding? >> >> Wayne >> >> >> Felipe Carrillo wrote: >> > >> > Hi: I need some help. >> > I am ploting a bar graph but I can't adjust my x >> axis scale >> > I use this code: >> > i <- >> qplot(ForkLength,Number,data=FL,geom="bar") >> > i + >> geom_bar(colour="blue",fill="grey65") # >> too crowded >> > >> > FL_dat <- >> ggplot(FL,aes(x=ForkLength,y=Number)) + >> > >> geom_bar(colour="green",fill="grey65") >> > FL_dat + scale_x_continuous(limits=c(20,170)) # >> Can't see anything >> > >> > FL Number >> > 29 22.9 >> > 30 63.4 >> > 31 199.3 >> > 32 629.6 >> > 33 2250.1 >> > ... >> > >> >> -- >> View this message in context: >> http://www.nabble.com/ggplot2-Xlim-tp21161660p21170453.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. > > ______________________________________________ > 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. > -- http://had.co.nz/ ______________________________________________ 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.
