> -----Original Message-----
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of David
> I'm trying to set different boxes to different colors the following page
> shows
> http://www.sthda.com/english/wiki/ggplot2-box-plot-quick-start-guide-r-
> software-and-data-visualization
>
>
> I've tried the code
> ToothGrowth$dose <- as.factor(ToothGrowth$dose)
> head(ToothGrowth)
> library(ggplot2)
> # Basic box plot
> p <- ggplot(ToothGrowth, aes(x=dose, y=len)) +
> geom_boxplot()
> p+scale_color_manual(values=c("#999999", "#E69F00", "#56B4E9"))
> p
You have not mapped an aesthetic to colour, so the scale (which applies to an
aesthetic) is not being used at all.
Try
( p <- ggplot(ToothGrowth, aes(x=dose, y=len)) +
geom_boxplot(aes(colour=dose)) )
which uses default colours. Once you have an aes mapping you can change the
scale, so
( p + scale_colour_manual(values = c("red", "blue", "green")) )
gives you the colour ordering you want.
( p + scale_colour_manual(values = c("red", "blue", "green"), guide=FALSE) )
also removes the redundant colour key.
S Ellison
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