RGB cube of an image

I'm trying to create a RGB cube of a image with matplotlib in python. I have a python list with the RGB of all the pixels in format [(2,152,255),(0,0,0)...]. I plot all the points with scatter function, but i don't know how to plot each RGB point with it's respective RGB colour.

I've tried doing something like this ax.scatter(paleta[0],paleta[1],paleta[2],c = RGBlist), but the function expect a RGBa value...

I expect somthig like this:

enter image description here

CODE :



paleta=zip(*RGBlist)        
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.scatter(paleta[0],paleta[1],paleta[2])
ax.grid(False)
ax.set_title('grid on')
plt.savefig('Images\\RGBcube.png')

Solution

Try scaling your RGB values to the range [0,1]:

ax.scatter(paleta[0],paleta[1],paleta[2], c=[(r[0] / 255., r[1] / 255., r[2] / 255.) for r in RGBlist])

This works in the following example:

import random
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import axes3d, Axes3D

RGBlist = [(random.randint(0,255), random.randint(0,255), random.randint(0,255)) for i in range(100)]
paleta=zip(*RGBlist)
fig = plt.figure()
ax = Axes3D(fig)
ax.scatter(paleta[0],paleta[1],paleta[2], c=[(r[0] / 255., r[1] / 255., r[2] / 255.) for r in RGBlist])
ax.grid(False)
ax.set_title('grid on')
plt.savefig('blah.png')

Giving the output:

enter image description here