An important limitation of hexagonally binned scatterplots is that they do not allow for the display of multi-class data using colours in a single graph panel; faceting is necessary. The
hextripackage allows the use of colour for multi-class data by dividing each hex into six triangles and allocating these in proportion to the number of observations from each class in the hex.
Multi-class hexbins (following Thomas Lumley & Jie Fu Yu 2016) for dealing with the overdraw problem. I hereby rename them Trivial Pursuit Maps. pic.twitter.com/rnM7R0f5IG
— Elijah Meeks (@Elijah_Meeks) May 8, 2018