how can i rotate a matrix by a specific angle in matlab

In order to rotate a matrix by a specific angle in MATLAB, you can use the function imrotate(). This function rotates an image by a specified angle, and can also be used to rotate a matrix. Here is an example code snippet that rotates a matrix by 45 degrees:

main.m
% Create a matrix
M = magic(5);

% Rotate the matrix by 45 degrees
M_rotated = imrotate(M, 45);

% Display the original and rotated matrices
subplot(1,2,1), imagesc(M), title('Original matrix');
subplot(1,2,2), imagesc(M_rotated), title('Rotated matrix');
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This will create a 5x5 magic square matrix, then rotate it by 45 degrees using imrotate(). The subplot() and imagesc() functions are used to display both the original and rotated matrices side-by-side for comparison.

Note that the imrotate() function can also take additional arguments, such as the center of rotation and the interpolation method to use. The documentation for imrotate() has more information on these additional arguments.