How can I remove the line aesthetic from a ggplot2 legend?
I have a plot where I would like to use different colors for the points but plot the linear regression based on all of the points:
library(ggplot2) set.seed(1) df <- data.frame(x=rnorm(100), y=rnorm(100), group=factor(rep(1:2,each=50))) ggplot(df,aes(x=x,y=y,color=group)) + stat_smooth(aes(group=1), method="lm", fill=NA) + geom_point() + theme_bw()
The problem is that when I use
stat_smooth() to add the regression line, it adds lines in the legend that I don't want. I can't override the color to remove the lines from the legend because I need the color for the points. How can I remove the lines from the legend but keep the points?