This function implements a number of new color textures for rayshader maps,
allowing users to reference any of the "spacey" palettes without needing to
create arrays themselves. It is extremely unlikely users will need to call
this function themselves; instead, most users will call it via
[automap].
Usage
get_texture(colorscale)
Arguments
colorscale
The color scale to return an RGB array for
Value
A matrix object provided by readPNG, suitable for
use with rayshader and similar mapping utilities.