I have data.frame of value between -10 to 10, my data.frame has 2 columns.I wanted to create a ggplot graph.
I need to give color to points which have values more than 8 or less than -8.
How can I do this by ggplot in geom_point()?
I agree with the comments above, anyway I think this is what you are looking for
p <- runif(100, min=-10, max=10) g <- 1:100 dat <- data.frame(p, g) dat$colors <- 1 dat[which(dat$p < (-8) | dat$p > 8),"colors"] <- 0 library(ggplot2) ggplot(dat, aes(x=g, y=p, group=colors)) + geom_point(aes(color=as.factor(colors)))
In a previous version of this answer the different colors were expressed as a continuous variable. I changed this to a dichotomous format with