小弟有一段程式碼如下
% An example of sRGB color gamut plotted in 3D CIELAB color space.
clear all;
% D65 light
Xn=0.9504;Yn=1.00;Zn=1.0883;
% XYZ-RGB matrix for ITU-R BT.709 (sRGB)
matxyz=[0.4124 0.3576 0.1805;
0.2126 0.7152 0.0722;
0.0193 0.1192 0.9505];
matsrgb=inv(matxyz);
% cor: {r,g,b} data corresponding {a,b,L} data
rgb=[1 0 0;
0 1 0;
0 0 1;
1 1 0;
1 0 1;
0 1 1;
1 1 1;
0 0 0];
% 0<nn<=1; we can change the R,G,B ranges by setting nn value.
nn=1.0;
rgbi=rgb.*nn;
% gamma correction for CRT
rgb=rgbi.^2.2;
rgb=rgb';
% tcx:tristimulus
tri=matxyz*rgb;
% the calculation of {a,b,L} data
xx=tri(1,/Xn;
yy=tri(2,/Yn;
zz=tri(3,/Zn;
ll=116*yy.^(1/3)-16;
% modify to negative L* values to zero
cp=ll<0;
ll(cp)=0;
aa=500*(xx.^(1/3)-yy.^(1/3));
bb=200*(yy.^(1/3)-zz.^(1/3));
% use LOOP to draw {a,b,L} points with their corresponding colors
rgb=rgb';

for i=1:length(rgb);
h1=plot3(aa(i),bb(i),ll(i),'.','MarkerSize',60,'Color',rgbi(i,);
h2=plot3(aa(i),bb(i),ll(i),'O','MarkerSize',30*(1.1-nn),'Color',rgbi(i,);
axis([-120 120 -120 120 0 100]);
set(gca,'nextplot','add');
end;

axis('square');
box on;
grid on;
xlabel('a*');ylabel('b*');zlabel('L*');
title('CIELAB Color Space');
%whitebg([0.8 0.8 0.8]);
rotate3d on;


這個程式會秀出八個分散的點
我想用plot3或是interp3這兩個指令把這八個點變成一直線
可是不知道該怎麼用
想請站上的前輩指點一下