[R] ggplot2 setting colors for individual groups.

[Dennis Murphy]

Hi:

You could always try cut() to discretize a continuous variable and
then apply your vector of set colors to the discretized variable in
ggplot2's scale_*_manual().

HTH,
Dennis

On Tue, Aug 9, 2011 at 9:26 AM, Adrienne Wootten <amwootte at ncsu.edu> wrote:
> All,
>
> I'm working with ggplot2 to produce some graphics that will be part of
> my master's thesis.  Here's what I would like to do here, (attached is
> an example of how far I've gotten).
>
> I'm working on mapping the values of several different parameters for
> each station in my study.  So far I've been working with
> scale_color_gradientn to handle the coloring.  What I would like to do
> is rather than have a smooth color gradient, I would like make the
> values between A and B a set color, between B and C another color, and
> so on.  That's where I'm having an issue, because the values are all
> continuous data, and it seems like the only thing which will let me
> get anything close to what I would like (such as scale_color_manual)
> requires a discrete dataset.
>
> I've reached an impasse with this and could really use some advice.
> Thanks everyone!
>
> A
>
> --
> Adrienne Wootten
> Graduate Research Assistant
> State Climate Office of North Carolina
> Department of Marine, Earth and Atmospheric Sciences
> North Carolina State University
>
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