Imagine you need to create a scatter plot in R that color-codes points based on a third categorical variable. How would you do this?

  • Use the col or col.fill parameter in the plot() function and map the third categorical variable to colors
  • Use the scatterplot() function and specify the third categorical variable as the col or color argument
  • Use the points() function and manually assign colors based on the third categorical variable
  • Use the ggplot2 package and the geom_point() function with the third categorical variable as the color aesthetic
To color-code points in a scatter plot based on a third categorical variable in R, you would use the col or col.fill parameter in the plot() function. Map the third categorical variable to different colors, and R will assign the corresponding colors to the data points on the scatter plot.
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