import numpy as np
import holoviews as hv
from holoviews import opts

hv.extension('matplotlib')

x,y = np.mgrid[-50:51, -50:51] * 0.1
h = 0.5 + np.sin(0.2*(x**2+y**2)) / 2.0
s = 0.5*np.cos(y*3)+0.5
v = 0.5*np.cos(x*3)+0.5

hsv = hv.HSV(np.dstack([h, s, v]))
hsv

opts.defaults(opts.Image(cmap='gray'))

hsv[..., 'H'].relabel('H') + hsv[..., 'S'].relabel('S') + hsv[..., 'V'].relabel('V')

print(hsv.rgb)
hsv.rgb[..., 'R'] + hsv.rgb[..., 'G'] + hsv.rgb[..., 'B']