scale_length_continuous() provides a continuous scale for controlling the
length aesthetic in a ggplot. This is particularly useful when working with
vector plots where vector lengths are mapped to a continuous scale.
scale_length_continuous(max_range = 0.5, ...)If max_range is less than or equal to 0.5 (the default), a
continuous scale object (typically of class "ScaleContinuous")
mapping the length aesthetic is returned. If max_range is
greater than 0.5, a list is returned with two components:
the continuous scale object, and
a theme modification (a theme object) that adjusts the legend key width based
on the value of max_range.
The maximum value to which the input is rescaled. Numeric scalar specifying the upper bound of the output range. Should be between 0 and 1.
Other arguments passed to continuous_scale().