If you define
color = "blue" inside the
aes() function you are mapping the
color aesthetic to a factor containing the "blue" label, if you want to set the color instead, you have to do it outside the
aes() function, see this example.
library(ggplot2) ggplot(mpg, aes(x = displ, y = hwy)) + geom_point(color = "blue")
Created on 2019-11-29 by the reprex package (v0.3.0.9000)
Thanks a lot
I will try it
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