I have data structured like this:
F1 F2 2012 2011
Dinner Monday 5 10
Lunch Tuesday 20 15
Breakfast Wednesday 4 20
I want to create a cross tab visual graph just like is described in this post:
visualizing crosstab tables with a plot in R
However, I want two columns on the graph so that I can see the year over year difference.
I successfully replicated the code at the above link to create the chart with one year. Is there a way for me to add another year?