display a 3d picture in matlab

To display a 3D picture in Matlab, you can use the 'surf' function. Here's an example code:

main.m
% Define the x and y ranges
x = linspace(-2, 2, 100);
y = linspace(-2, 2, 100);

% Create coordinate grid
[X,Y] = meshgrid(x,y);

% Define the z function
Z = X.*exp(-X.^2-Y.^2);

% Plot the surface
surf(X,Y,Z);
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In this code, we first define the range of x and y values, create a coordinate grid using the meshgrid function, and define a 3D function for z values. We then plot the surface using the surf function. This creates a 3D picture of the function in a 3D plot window.