How I plot 3d graph of known x,y,z ?

I have known x,y,z and I want to plot them in 3d graph, please how can I do that? The data is attached for your reference ..

Thanks in advance,

x = [1 5 10 50 100];

y = [0.001 0.125 0.25 0.5 1 5 10 50 100];

Number of Y

z= [0.7395 0.8675 0.8899 0.9069 0.9316 0.9777 0.9879 0.9904

Number 0.7652 0.8904 0.9062 0.9316 0.9516 0.9849 0.9924 0.9947

of 0.7739 0.8949 0.9157 0.94 0.9591 0.9874 0.9931 0.996

X 0.7805 0.9115 0.9369 0.9558 0.9705 0.9908 0.9958 0.997

0.7833 0.921 0.9429 0.9616 0.9738 0.9921 0.9965 0.9971]

i've tried this link, but there is an error

>> surf(X,Y,z)

Error using surf (line 71)

Data dimensions must agree.

Thank you

Answer 1

[Prabhan Purwar]

Hi,

Kindly refer to the following code:

x=[1 5 10 50 100];
y=[0.001 0.125 0.25 0.5 15 10 50 100];
Z=[0.7395 0.8675 0.8899 0.9069 0.9316 0.9777 0.9879 0.9904;
   0.7652 0.8904 0.9062 0.9316 0.9516 0.9849 0.9924 0.9947;
   0.7739 0.8949 0.9157 0.94 0.9591 0.9874 0.9931 0.996;
   0.7805 0.9115 0.9369 0.9558 0.9705 0.9908 0.9958 0.997;
   0.7833 0.921 0.9429 0.9616 0.9738 0.9921 0.9965 0.9971];

[X,Y] = meshgrid(y,x);

surf(X,Y,Z)

Note:

% If Z is 5 X 8;
% X should be 5 X 8;    // created using meshgrid
% Y should be 5 X 8;
% and x is 1 X 5;
% and y is 1 X 8;

Output:

Following links may help:

• https://www.mathworks.com/help/matlab/ref/meshgrid.html (meshgrid)
• https://www.mathworks.com/help/matlab/ref/surf.html (surf)