Exercise 5.5: Heat maps with Bokeh

---

A heat map is a type of plot where magnitude is expressed in terms of color. You can see an example of a heatmap generated using Bokeh here.

a) Write a function with call signature heatmap(x, y, z) (you can add any kwargs you like) that make a heat map from x, y, z data. For simplicity for this function, assume x and y are categorical variables.

b) 96 well plates are often used in analyzing biochemical reactions. Some absorbance data from a 96 well plate experiment are in the file ~/git/bootcamp/data/96_well.csv. Use your heatmap() function to make a display of the data.