3d Plotting Using Meshgrid

Hello,

This is the Matlab script I designed for 3D plotting using "meshgrid". Basically, I need to make a plot a function which is given by " f " depending on two independent variables " i " and " j ". I want to keep " f " as a 2-D array. I have tried to modify my code several times, but I couldn't get an expected output. Would you help me to address the problem?

format long e

n=1:1:5;
m=1:1:10;
alpha=0.01;
A=zeros(length(n),length(m));
B=zeros(length(n),length(m));
f=zeros(length(n),length(m));


for i=1:1:length(n)
    for j=1:1:length(m)        
        A(i,j)=i.^2/j.^3;
        B(i,j)=A(i,j)/(alpha+i);         
        f(i,j)=B(i,j)./A(i,j);
        %fprintf('%d %d %.10e %.10e %.10e\n',i,j,A(i,j),B(i,j),f(i,j));
    end
end

for i=1:1:length(n)
    for j=1:1:length(m)
        [X,Y]=meshgrid(i,j);
        %disp(f(X,Y));       
        mesh(X,Y,f(X,Y));
    end
end

Answer 1

[Daniel M]

Replace

for i=1:1:length(n)
    for j=1:1:length(m)
        [X,Y]=meshgrid(i,j);
        %disp(f(X,Y));       
        mesh(X,Y,f(X,Y));
    end
end

with

[X,Y] = meshgrid(1:length(n),1:length(m));
figure
surf(X,Y,f')

[onsagerian]

It works! Thank you for your help.