R help - Jan 2009 - Changing histogram stack in qplot

I've been using qplot pretty successfully to generate stacked histograms. 
However, it appears that I need to tweak the colors a little. 
 
I've got three temperature variables (characters not numeric) and I need to
change from the default qplot colors to the following:
Low = Blue
Middle = black
High = Red
 
Here is pseudo code of what I have currently:qplot(Run, data = TestData, breaks
= hist_breaks, , 
          fill = TestData$Temperature, 
          main = short_title) +
          scale_x_continuous("Run, Radians") +
scale_y_continuous("Frequency") +
          scale_fill_discrete("Temperature")
 
Thanks for any advice and insights.
 
 


      
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Hi Jason,

You'll need scale_fill_manual(values = c(low = "blue", middle
"black", high = "red"))

See http://had.co.nz/ggplot2/scale_manual.html for more examples/details.

Regards,

Hadley

On Wed, Jan 28, 2009 at 3:11 PM, Jason Rupert <jasonkrupert at yahoo.com>
wrote:
> I've been using qplot pretty successfully to generate stacked
histograms.  However, it appears that I need to tweak the colors a little.
>
> I've got three temperature variables (characters not numeric) and I
need to change from the default qplot colors to the following:
> Low = Blue
> Middle = black
> High = Red
>
> Here is pseudo code of what I have currently:qplot(Run, data = TestData,
breaks = hist_breaks, ,
>           fill = TestData$Temperature,
>           main = short_title) +
>           scale_x_continuous("Run, Radians") +
scale_y_continuous("Frequency") +
>           scale_fill_discrete("Temperature")
>
> Thanks for any advice and insights.
>
>
>
>
>
>        [[alternative HTML version deleted]]
>
>
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> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>


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