r of integers from -10 to 10 would be warped
so the intervals near zero were smaller than 1, and intervals
farthest from zero are greater than 1.</p>
<p>The main driver for this function was the desire to compress
divergent color scales used in heatmaps, in order to enhance
smaller magnitude numeric values. Existing color ramps map the
color gradient in a linear manner relative to the numeric range,
which can cause extreme values to dominate the color scale.
Further, a linear application of colors is not al