MATLAB: Adding legend for multiple surface in same graph

legend for individual surface

Hi,
I am relatively new to Matlab. I have a figure (attached) which has two surfaces . I want to create legend for each surface. Any idea/suggestion how I can create legend for each surface? I have the attached the figure.
This is my code to create this graph
close all
clear variables
clc
test = xlsread('Matlabinput.xlsx', 'c2:f20');
x=test(:,1);
y=test(:,2);
z=test(:,3);
v=test(:,4);
xlin = linspace(min(x),max(x),13);
ylin = linspace(min(y),max(y),13);
[X,Y] = meshgrid(xlin,ylin);
f = scatteredInterpolant(x,y,z);
f2 = scatteredInterpolant(x,y,v);
Z = f(X,Y);
Z2 = f2(X,Y);
figure
mesh(X,Y,Z); %interpolated

axis tight ;
hold on;
surf( X, Y, Z, 'EdgeColor', 'black', 'FaceColor', [255,100,0]/255, 'FaceAlpha', .5 );
plot3(x,y,z,'.' );
axis tight; 
mesh(X,Y,Z2) %interpolated
axis tight; 
surf( X, Y, Z2, 'EdgeColor', 'black', 'FaceColor', [1,255,200]/255, 'FaceAlpha', .9);
plot3(x,y,v,'.' ) %nonuniform
%hold on
xlabel('h')
ylabel('s')
zlabel('tc')
alpha(0.5) %transparent
Thanks in advance.
Best,
Roni

Best Answer

Side note: you do not need surf() and then plot3(). You can use
surf( X, Y, Z, 'EdgeColor', 'black', 'FaceColor', [255,100,0]/255, 'FaceAlpha', .5, 'Marker', '.' );
To legend appropriately, you would use
h1 = surf( X, Y, Z, 'EdgeColor', 'black', 'FaceColor', [255,100,0]/255, 'FaceAlpha', .5, 'Marker', '.' );
and later
h2 = surf( X, Y, Z2, 'EdgeColor', 'black', 'FaceColor', [1,255,200]/255, 'FaceAlpha', .9, 'Marker', '.');
and then
legend([h1, h2], {'First Surface', 'Second Surface'});
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