It works! Thanks a lot for your explanations, Michael.
 
Good luck,
 Mario


________________________________
Von: R. Michael Weylandt <michael.weylandt@gmail.com>

Cc: "r-help@r-project.org" <r-help@r-project.org> 
Gesendet: 5:22 Montag, 30.Januar 2012
Betreff: Re: [R] ColorBrewer question

I believe you need to use the scale_fill_brewer since fill is the
color of the bars while color is the outside of the bars in
ggplot2-speak:

E.g., with built-in data (it's polite to provide yours so that your
minimal working example is working):

data(diamonds)
ggplot(diamonds, aes(clarity)) + geom_bar(aes(fill = clarity, color = clarity))

# Note the borders are now changed but the fill is the same
ggplot(diamonds, aes(clarity)) + geom_bar(aes(fill = clarity, color =
clarity)) + scale_color_brewer(pal = "Blues")

# Now the fill is changed, but you probably want to drop the border
coloring since it's hideous against the blues
ggplot(diamonds, aes(clarity)) + geom_bar(aes(fill = clarity, color =
clarity)) + scale_fill_brewer(pal = "Blues")

# So lovely
ggplot(diamonds, aes(clarity)) + geom_bar(aes(fill = clarity)) +
scale_fill_brewer(pal = "Blues")

Michael


> Hello, R friends,
>
> I'm trying to change colors of my horizontal bars so that they show a sequence.
> I chose the ColorBrewer palette "Blues". However the resulting plot doesn't show any changes to the default.
> I tried several places of "+ scale_colour_brewer(type="seq", pal = "Blues")" with no effect.
> This is my code:
>
> p <- ggplot(data, aes(x = gender))  + scale_y_continuous("",formatter="percent") + xlab("Gender") + coord_flip() +     scale_colour_brewer(type="seq", pal = "Blues")
> p+geom_bar(aes(fill=pet),colour='black',position='fill')
>
>
> Any ideas welcome.
> Thanks,
>  Mario
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>
>
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