Map vector of numeric values to Viridis color scale.
mapViridis(values, domain_min = 0, domain_max = 50, n = 256)
vector of numeric values (mostly -log10(p-values))
numeric value that corresponds to the 'yellow' in the color scale
numeric value that corresponds to the 'dark blue' in the color scale
number of bins to generate from the color scale
The output is a corresponding vector of colors from the Viridis color scale with domain in range(domain_min, domain_max).