[R] ggplot2 shifting bars to only overlap in groups

[Hörmetjan Yiltiz]

I did not know the SVG file did not come through. I thought SVG should be
able to pass through the filter. Here is a PDF file along with an PNG.
Guess one of them should be able to pass.

祝好，
========================
He who is worthy to receive his days and nights is worthy to receive* all
else* from you (and me).
                                                 The Prophet, Gibran Kahlil


On Fri, Feb 13, 2015 at 12:04 AM, John Kane <jrkrideau at inbox.com> wrote:

>
> I'm a bit blind today. I read df as a dput() .
>
> John Kane
> Kingston ON Canada
>
> -----Original Message-----
> From: hyiltiz at gmail.com
> Sent: Thu, 12 Feb 2015 23:38:01 +0800
> To: jrkrideau at inbox.com
> Subject: Re: [R] ggplot2 shifting bars to only overlap in groups
>
> You are most likely simply not running the whole lines of code: note that
> the first line is:
>
> N = 32
>
>  Best
> ，
> ========================
> He who is worthy to receive his days and nights is worthy to receive* all
> else* from you (and me).
>                                                  The Prophet, Gibran Kahlil
>
> On Thu, Feb 12, 2015 at 11:31 PM, John Kane <jrkrideau at inbox.com> wrote:
>
>         I am gettting the error"
>  Error in rep_len(rep.int [http://rep.int](seq_len(n), rep.int [
> http://rep.int](k, n)), length) :
>    object 'N' not found
>
>  Also your image did not come through.  Try sending it as a pdf file.
>
>  when I try to create
>  df<- data.frame(gender=gl(2,1,N, c("male","female")),
>            direction=gl(2,2,N, c("up","down")),
>            condition=gl(4,4,N, c("c1","c2","c3","c4")),
>            location=gl(2,16,N, c("east","west")),
>            t=rnorm(N, 1, 0.5),
>            ci=abs(rnorm(N, 0, 0.2)))
>
>  John Kane
>  Kingston ON Canada
>
>  > -----Original Message-----
>  > From: hyiltiz at gmail.com
>  > Sent: Thu, 12 Feb 2015 22:08:36 +0800
>  > To: r-help at r-project.org
>  > Subject: [R] ggplot2 shifting bars to only overlap in groups
>  >
>  > Hi all,
>  >
>  > I have four factors for a continuous time variable along with its
>  > confidence interval. I would like to produce a publication quality error
>  > bar chart that is clear to understand. For now, I used colors, x axis
>  > position, facets and alpha level to distinguish them.
>  >
>  > I would like to overlap each pairs of bars with the same color a bit as
> a
>  > group, but not overlap each and every bars with each other.
>  >
>  > Here is a minimal example:
>  >
>  > N = 32
>  > df<- data.frame(gender=gl(2,1,N, c("male","female")),
>  >           direction=gl(2,2,N, c("up","down")),
>  >           condition=gl(4,4,N, c("c1","c2","c3","c4")),
>  >           location=gl(2,16,N, c("east","west")),
>  >           t=rnorm(N, 1, 0.5),
>  >           ci=abs(rnorm(N, 0, 0.2)))
>  > pp <-
>  >   ggplot(df, aes(x=gender, y=t, fill=condition, alpha=direction)) +
>  >   facet_grid(location~.) +
>  >   geom_bar(position=position_dodge(.9), stat="identity", color="black")
> +
>  >   geom_errorbar(aes(ymin=t-ci, ymax=t+ci),
>  >                 width=.2,                    # Width of the error bars
>  >                 position=position_dodge(.9)) +
>  >   scale_alpha_discrete(range= c(0.4, 1))
>  > pp
>  >
>  >
>  >
>  > In the attachment, I have added the output figure, while manually
> editing
>  > the SVG file to make the lower-left group of bars to make them as I
>  > wanted.
>  > (The spacing in between each pair is not necessarily required.)
>  >
>  >
>  > Best
>  > ，
>  > ========================
>  > He who is worthy to receive his days and nights is worthy to receive*
> all
>  > else* from you (and me).
>  >                                                  The Prophet, Gibran
>  > Kahlil
>
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