3 Texters create the label strings written to the ticks. There are texters
4 available for decimal numbers without and with an exponential part as well as
7 ! At the right axis we also show how to create a special piaxis. Here some axis
8 parameters are altered to fit an pi-scaled axis nicely. Futhermore instead of
9 just creating a special axis instance by setting the divisor and texter
10 parameters, a `piaxis` class is created which just alters the defaults of the
11 linear axis it is based at.