[R] ggplot boxplot - how to order categories

[hadley wickham]

Hi Raj,

It's the same as the other plotting systems in R: you need to change
the order of the underlying factor levels.  e.g.:

levels(diamonds$color) <- c("J", "D", "E", "I", "H", "F", "G")

If you're reordering then according to the value of another variable,
also see ?reorder

Hadley

On Mon, Aug 25, 2008 at 12:56 PM, Raj Minhas <rajminhas at gmail.com> wrote:
>
> I am interested in creating a boxplot using ggplot or qplot where I can
> specify the order of the categories being plotted on the x-axis. For
> example, the following command plots the categories (diamond color) in
> alphabetic order (D, E, ..., J):
>
> qplot(color, price/carat, data=diamonds, geom="boxplot")
>
> I want to know how I can modify this command so that the categories are
> plotted in a different order (say, J, D, E, I, H, F, G).
>
> Thanks in advance.
>
> -Raj.
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