Something like this shouldn't be too complicated to cook up. Perhaps this is a start:
function h = cwheel(x0,y0,phi0,r,nspokes)
% CWHEEL - simple colour-wheel
%
if nargin < 5 || isempty(nspokes)
nspokes = 18;
end
if nargin < 4 || isempty(r)
r = 1;
end
phi = linspace(0,2*pi,nspokes+1);
[phi,R] = meshgrid(phi,[0 r]);
v = repmat(linspace(0,1,nspokes+1),2,1);
h = pcolor(x0+R.*cos(phi-phi0),y0+R.*sin(phi-phi0),v);
You can run this like this to get something like your second graph:
qwe = peaks(14);
[x0,y0] = meshgrid(1:14);
for i1 = 1:14,
for i2 = 1:14,
h = cwheel(x0(i1,i2),y0(i1,i2),qwe(i1,i2),0.4,12);
hold on
end
end
axis auto
colormap(hsv)
Then if you need different wheels to span different ranges you'll have to add that to the cwheel-function instead of having v span 0-1 every time. You might also prefer to have smoother colour-wheel and only plot a couple of spokes, but that's a minor adjustment (increase the number of elements in v, set shading to flat or interp and plot the spokes you want separately).
HTH
