In exercise 1 in the "Aesthetic Mappings" section of the "Data Visualization Basics" primer it asks you to assign cty to the color, size, and shape arguments in the aesthetic mapping. However, this causes an error because "A continuous variable can not be mapped to shape".
In exercise 1 in the "Aesthetic Mappings" section of the "Data Visualization Basics" primer it asks you to assign
ctyto thecolor,size, andshapearguments in the aesthetic mapping. However, this causes an error because "A continuous variable can not be mapped to shape".