[R] Legend / bar order - ggplot2

[Dennis Murphy]

Hi:

The bars *are* ordered in the same way, but when you use coord_flip(),
the left category goes on top and the right category goes on the
bottom. Is this what you want?

ggplot(df, aes(x = name, y = value, fill = type)) +
  geom_bar(position = position_dodge()) +
  coord_flip() +
  scale_fill_manual(breaks = rev(levels(df$type)),
                               values = c('orange', 'blue'))

HTH,
Dennis

On Mon, Aug 29, 2011 at 6:18 AM, Yang Lu <Yang.Lu at williams.edu> wrote:
> Hi all,
>
> I am trying to do a barplot in ggplot2 and want to make sure that the legend order is consistent with the bar order, that is the legend order is orig and match; and the bars are ordered in the same way. It seems to me that I can only control one of them. Any idea?
>
> library(ggplot2)
> df <- data.frame(value = rnorm(20),
>                 name = factor(rep(letters[1:10], 2), levels = letters[1:10]),
>                 type = factor(c(rep("orig", 10),
>                   rep("match", 10)), levels = c("orig", "match")))
>
> ggplot(df, aes(x = name, y = value, fill = type)) +
>  geom_bar(position = position_dodge()) +
>  coord_flip()
>
> Thank you very much,
>
> YL
>
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