How can i plot this pic by matlab ??

Answer 1

[DGM]

It looks like an upside-down representation of HSV with some random unknown extra line. I'm going to ignore it, since it looks like a mistake.

% vertex colors
CT0 = [0 0 0; % k
    1 1 1; % w
    hsv(6)]; % rygcbm

% vertex locations
a = 0.5;
b = sqrt(3)/2;
V = [0 0 1; % k
    0 0 0; % w
    1 0 0; % r
    a b 0; % y
    -a b 0; % g
    -1 0 0; % c
    -a -b 0; % b
    a -b 0]; % m

% face list
ps = (3:8).';
F = [2*ones(6,1) circshift(ps,-1) ps;
    ones(6,1) ps circshift(ps,-1)];

% plot it all
patch('faces',F,'vertices',V, ...
    'facevertexcdata',CT0,'facecolor','interp');
view(-62,-22)
axis equal; grid on
xlabel('X'); ylabel('Y'); zlabel('Z')
ylim([-1 1])

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