A reproduction of Florence Nightingale’s rose diagram. Data Source: Nightingale, F., Farr, W., & Smith, A. (1859). A contribution to the sanitary history of the British army during the late war with Russia. John W. Parker and Son.

First, we draw a circle, divide it by “Month”, then divide the resulting pie by “Type”.

Next, we select any arc and bind its thickness to “Death”. The default scale type is linear, we change it to “Square Root” so that the area represents the death count.

Finally, we bind the fill color of each arc to “Type”, and customize the color mapping.