[R] ggplot2 Xlim
Felipe Carrillo
mazatlanmexico at yahoo.com
Sat Dec 27 02:25:46 CET 2008
Thanks Hadley: I had already gone to your website and stat="identity" is what I needed.
--- On Fri, 12/26/08, hadley wickham <h.wickham at gmail.com> wrote:
> From: hadley wickham <h.wickham at gmail.com>
> Subject: Re: [R] ggplot2 Xlim
> To: mazatlanmexico at yahoo.com
> Cc: r-help at r-project.org, "Wayne F" <wdf61 at mac.com>
> Date: Friday, December 26, 2008, 3:31 PM
> 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
> <mazatlanmexico at 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 <wdf61 at mac.com>
> wrote:
> >
> >> From: Wayne F <wdf61 at mac.com>
> >> Subject: Re: [R] ggplot2 Xlim
> >> To: r-help at 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 at 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 at 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/
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