# find center of matrix

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arame sotudegan on 3 Mar 2021
Moved: Image Analyst on 4 Jun 2023
Hello everyone. I have a 100*120 Matrix and I want to find a mini square insite the matrix exactly at its center. How can I find it?

jessupj on 3 Mar 2021
Moved: Image Analyst on 4 Jun 2023
A( 49: 51, 59:61) for a 2x2 submatrix.

Kautuk Raj on 3 Jun 2023
To find a mini square exactly at the center of a 100x120 matrix in MATLAB, we can follow the following steps:
1. Calculate the center coordinates of the matrix using the size function.
2. Define the size of the mini square you want to extract.
3. Calculate the starting row and column indices of the mini square.
4. Extract the mini square using the calculated row and column indices.
This is the MATLAB code for doing this:
% Define the matrix
matrix = rand(100, 120);
% Calculate the center coordinates of the matrix
[rows, cols] = size(matrix);
center_row = ceil(rows/2);
center_col = ceil(cols/2);
% Define the size of the mini square
square_size = 10;
% Calculate the starting row and column indices of the mini square
start_row = center_row - floor(square_size/2);
start_col = center_col - floor(square_size/2);
% Extract the mini square
mini_square = matrix(start_row:start_row+square_size-1, start_col:start_col+square_size-1);
The resulting mini square will be a 10x10 matrix in the center of the original matrix. The code can be run to find the mini square.