math_format: Add arbitrary expression to a label.
The symbol that will be replace by the label value is .x.
Description
Add arbitrary expression to a label. The symbol that will
be replace by the label value is .x.
Usage
math_format(expr = 10^.x, format = force)
Arguments
expr
expression to use
format
another format function to apply prior to
mathematical transformation - this makes it easier to use
floating point numbers in mathematical expressions.
Value
a function with single paramater x, a numeric vector,
that returns a list of expressions