Arbitrary colour gradient palette (continuous)
gradient_n_pal(colours, values = NULL, space = "Lab")
vector of colours
if colours should not be evenly positioned along the gradient
this vector gives the position (between 0 and 1) for each colour in the
colours
vector. See rescale()
for a convenience function
to map an arbitrary range to between 0 and 1.
colour space in which to calculate gradient. Must be "Lab" - other values are deprecated.