Trying to plot 4D data

I'm trying to plot my data as a 4D figure like attached image, but I don’t know which command should be used.

I would be grateful if someone could help me with this, thank you.

x=[1;2;3;4;5;6]

y=[20;40;60;80;100;120]

z=[7.5	6.4	5.4	4.7	4.6	7.3
8	7	6.3	5.9	6.2	9.3
7.6	6.9	7.6	10.6	17.8	38.8
8.9	9	10.8	15.1	24.6	52.2
9.9	10.4	12.5	17.2	27.4	57.6
11.8	12.9	15.6	21	32.6	67.2
]

u=[1.166095944	0.97358166	0.779831701	0.585208118	0.390139923	0.194918905
1.125081616	0.938075367	0.750416267	0.56248955	0.374665613	0.187071512
1.299656109	1.085162773	0.869349505	0.6528042	0.435361439	0.217700286
1.33599592	1.114982352	0.893254036	0.670663527	0.447356191	0.223576511
1.353130634	1.129064616	0.904218619	0.678721998	0.452633899	0.226149653
1.383264964	1.153932529	0.923799929	0.693105559	0.462123411	0.230823789
]

Answer 1

[Voss]

In the sample image, it looks like Z = U, i.e., the color of the surface corresponds to a U-value which is equal to the Z-value of the surface. That's not the case here, since here the variable z is not equal to the variable u.

Nevertheless, you can create a surface that uses x, y, and z as its spatial coordinates and u as its color.

x=[1;2;3;4;5;6];

y=[20;40;60;80;100;120];

z=[7.5	6.4	5.4	4.7	4.6	7.3
8	7	6.3	5.9	6.2	9.3
7.6	6.9	7.6	10.6	17.8	38.8
8.9	9	10.8	15.1	24.6	52.2
9.9	10.4	12.5	17.2	27.4	57.6
11.8	12.9	15.6	21	32.6	67.2
];

u=[1.166095944	0.97358166	0.779831701	0.585208118	0.390139923	0.194918905
1.125081616	0.938075367	0.750416267	0.56248955	0.374665613	0.187071512
1.299656109	1.085162773	0.869349505	0.6528042	0.435361439	0.217700286
1.33599592	1.114982352	0.893254036	0.670663527	0.447356191	0.223576511
1.353130634	1.129064616	0.904218619	0.678721998	0.452633899	0.226149653
1.383264964	1.153932529	0.923799929	0.693105559	0.462123411	0.230823789
];

% hard to say which one of these four is the correct way to depict 
% these data:
surf(x,y,z,u);
% surf(x,y,z.',u.');
% surf(x,y,z.',u);
% surf(x,y,z,u.');

cb = colorbar();
xlabel('X')
ylabel('Y')
zlabel('Z')
ylabel(cb,'U','Rotation',0);

[Amin KLS]

It's exactly what I needed, thank you for your assistance.