ggplot-How to define fill colours?

Pedro,

I've had a similar problem. See this post for the solution:
http://thread.gmane.org/gmane.comp.lang.r.general/100649/focus=100673

Cheers,

Thierry


------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be
www.inbo.be

Do not put your faith in what statistics say until you have carefully
considered what they do not say.  ~William W. Watt
A statistical analysis, properly conducted, is a delicate dissection of
uncertainties, a surgery of suppositions. ~M.J.Moroney

-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens Pedro de Barros
Verzonden: maandag 17 december 2007 23:55
Aan: r-help at stat.math.ethz.ch
Onderwerp: [R] ggplot-How to define fill colours?
Urgentie: Hoog

Dear R's (most likely Hadley),

I want to build a stacked bar plot where I would like to define which
colours will be used for each of the groups. However, I do not seem
to find a way to do this, even if I've been looking over many places.

I have tried several variations, and my final try was this code, but
I still do not manage to get the colours as I pre-define. Any hints
about how to get this?

Thanks in advance,
Pedro
============================================
my code:

 >plotdata1<-data.frame(x=rep(factor(1:4),4), y=rep(0.1*(1:4),4),

+group=as.character(rep(c('white', 'red', 'blue', 'green'),rep(4,4))))

 >plot0<-ggplot()
 >plot3<-plot0+layer(data=plotdata1, mapping=aes_string(x='x',y='y',

+fill='group'),geom='bar', stat='identity', position='stack')

 >print(plot3)