How to change the color of a particular bar based on a particular threshold...
Say I am dividing revenue for a few department but I want to change the color of the bar of a particular or multiple department they meet a particular criteria.
Great solution @jcblum, cannot resist to add that IMHO one should avoid generating data in the call to ggplot, but rather include all the data needed for plotting in the data itself and also if possible set the aesthetics in the ggplot call