Label numbers in log format (10^3, 10^6, etc)Source:
label_log() displays numbers as base^exponent, using superscript formatting.
Base of logarithm to use
Number of significant digits to show for the exponent. Argument is passed on to
label_() functions return a "labelling" function, i.e. a function that
takes a vector
x and returns a character vector of
length(x) giving a
label for each input value.
Labelling functions are designed to be used with the
labels argument of
ggplot2 scales. The examples demonstrate their use with x scales, but
they work similarly for all scales, including those that generate legends
rather than axes.