ggplot2 Color Scale Over Affected by Outliers

Question

I\'m having difficulty with a few outliers making the color scale useless.

My data has a Length variable that is based in a range, but will usually have a few much large

Answer 1

From my comment, see ?cut

x$colors <- cut(x$Length, breaks=c(0,500,1000,1300,max(x$Length)))

g <- ggplot(data=x,aes(x=date,y=factor(stateabbr),color=colors)) +
    geom_point() + 
    opts(title="Date and State") + 
    xlab("Date") + 
    ylab("State")