contour plot in matlab

Contour plots are 2D graphs that show isolines of a 3D surface. In Matlab, you can create a contour plot using the 'contour' function.

Here's an example code to create a contour plot in Matlab:

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

% Create a grid of points for (x,y)
[X, Y] = meshgrid(x, y);

% Define the function to plot
Z = sin(X.^2 + Y.^2);

% Create the contour plot
contour(X, Y, Z);

% Label the x and y axes
xlabel('x');
ylabel('y');

% Add a title to the plot
title('Contour Plot of sin(x^2 + y^2)')
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Explanation:

• The linspace function is used to define the domain for x and y
• The meshgrid function is used to create a grid of points for (x,y)
• The function to plot is defined as Z = sin(X.^2 + Y.^2)
• The contour function is used to create the contour plot
• The xlabel, ylabel, and title functions are used to label the axes and add a title to the plot.