pub fn axis_gutter(font_size: Pixels) -> f32Expand description
The space below (or above) an x-axis line that tick labels of font_size
need: the gap PlotAxis leaves between the line and the labels, the
labels themselves, and a trailing gap.
A chart reserves this much of its height for the axis. With the default
TEXT_SIZE it is 18px; a styled layer drawing larger labels passes its
own size so the plot shrinks to fit them.