MATLAB可以用颜色作为第四维进行画图，四维曲面图

clc;clear; close all; rpol=25/2000; nthe=51; npsi=51; the=linspace(0,pi,nthe); psi=linspace(0,2*pi,npsi); % Matriculated; [psi,the]=meshgrid(psi,the); rpol=rpol*ones(size(the)); % Convert spherical coordinate to Cartesian Coordinate; x_mm=rpol.*cos(the)*1000; % z in transformational relation; y_mm=rpol.*sin(the).*cos(psi)*1000; % x in transformational relation; z_mm=rpol.*sin(the).*sin(psi)*1000; % y in transformational relation; tic fval=2*x_mm.^2+y_mm.^2-z_mm.^2; %% this is a example !!; toc %% matrix ( x y z fval ) used to figure fval is color; %% figure figure('Renderer','zbuffer','Color',[1 1 1]); surf(x_mm,y_mm,z_mm,fval); shading interp;light;lighting gouraud; colorbar axis equal; xlabel('x(mm)');ylabel('y(mm)');zlabel('z(mm)');