What is the model behind stem's scale? How the number of bins are determined? In the following example session, scale=1 and scale=2 has the same result. > stem(c(11,21,31),scale=2) The decimal point is 1 digit(s) to the right of the | 1 | 1 1 | 2 | 1 2 | 3 | 1 > stem(c(11,21,31),scale=1) The decimal point is 1 digit(s) to the right of the | 1 | 1 1 | 2 | 1 2 | 3 | 1