[R] Combining several mappings in ggplot2

[hadley wickham]

On Tue, Mar 25, 2008 at 11:48 AM, Tribo Laboy <tribolaboy at gmail.com> wrote:
> Hello,
>
>  I want to be able to make a plot that has several series with
>  different color and linetype.
>  Online documentation suggest that this is possible, but I haven't found how:
>
>  "We can also create redundant mappings, mapping the same variable to
>  multiple aesthetics. This is most useful when producing a graphic for
>  both colour and black and white display."
>
>  Here's what I have to get the color
>  ggplot(data = Orange, aes(x = age, y = circumference, color = Tree)) +
>  geom_line()
>
>  if i try this I get an error:
>  ggplot(data = Orange, aes(x = age, y = circumference, color = Tree,
>  linetype = Tree)) + geom_line()

Please provide a reproducible example (or at least describe the
error!), otherwise we have no way to help you.

Hadley


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