How can i plot a 3d curve ?

Hello

How can i plot a 3d curve like (Figure 3D) as attached ?

For example:

x1 = [1 2 3 4 5 6 7 8 9 10];

x2 = [5 4 2 7 15 12 26 84 95 78];

x3 = [12 41 51 62 142 185 192 202 256 275 ];

plot3d (x1,x2,x3)

Using this program, I have obtained a line not a surface.

Please help me.

Answer 1

[Jan]

See patch and surf.

[Mallouli Marwa]

Hello

How can i add the coulor to the function surf ?

Thanks

[Jan]

This is explained in the documentation: surf(X,Y,Z,C) or surf(Z,C), where C is the color information. What did you try and which problem occur?

[Mallouli Marwa]

Please how can i add the colour This is my example:

y1 = [28 28.5 29 35 50];

y2 = [1e2 1e3 1e4];

y3 = [0.30566 0.31675837 0.3280565163 0.4793385 0.98557455 3.04709 3.157375 3.269625 4.77027 9.7606137 29.5405784 30.576361 31.628 45.4737503 88.77938];

[Y1,Y2]= meshgrid (y1*1e-3 , y2) ; %(20:20:100,0:0.2:1);

figure (2)

surf(Y1,Y2,y3)

xlabel ('Length of layers (mm)')

ylabel('Load resistance (\Omega)')

zlabel('Power (\muW/g^2)')

[Mallouli Marwa]

All my curves are blue

How can i change their colour ?