I am gettting the error"
Error in rep_len(rep.int(seq_len(n), 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: hyil...@gmail.com
> Sent: Thu, 12 Feb 2015 22:08:36 +0800
> To: r-help@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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> and provide commented, minimal, self-contained, reproducible code.
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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