polygon
clear; close t = 0:pi/5:2*pi; patch(sin(t),cos(t),'y') axis equal
t = t(1:length(t)-1); % remove redundant vertex h = linspace(0,1,10); s = ones(10,1); v = s; hsv = cat(3,h',s,v); rgb = hsv2rgb(hsv); % You can specifiy color for each vertex, each face, or a % single color for the entire patch. close patch(sin(t),cos(t),rgb); axis equal