Chapter 7: Attribute Maps, Draw, and Annotate
Using bar charts or series plots by the appropriate class variable, you create a graph of response by visit and drug or revenues by product and year. But, when you run the program with a different data set, the colors for the groups shift. What to do?
Or, you want to add a feature to the graph, but there is no plot statement that will let you do it. How do you proceed?