All about attributes: color, shape, size and alpha
This time you'll use these arguments to set attributes of the plot, not map variables onto aesthetics.
You can specify colors in R using hex codes: a hash followed by two hexadecimal numbers each for red, green, and blue ("#RRGGBB"). Hexadecimal is base-16 counting. You have 0 to 9, and A representing 10 up to F representing 15. Pairs of hexadecimal numbers give you a range from 0 to 255. "#000000" is "black" (no color), "#FFFFFF" means "white", and `"#00FFFF" is cyan (mixed green and blue).
A hexadecimal color variable, my_blue has been defined for you.
This exercise is part of the course
Introduction to Data Visualization with ggplot2
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# A hexadecimal color
my_blue <- "#4ABEFF"
ggplot(mtcars, aes(wt, mpg)) +
# Set the point color and alpha
geom_point(___)