The Function computes the sum of the elements of an input matrix A that are on the “perimeter” of A. In other words, it adds together the elements that are in the first and last rows and columns. Note that the smallest dimension of A is at least 2.
Ibrahim Abouemira (2020). Sum of values on the perimeter of a matrix (https://www.mathworks.com/matlabcentral/fileexchange/71595-sum-of-values-on-the-perimeter-of-a-matrix), MATLAB Central File Exchange. Retrieved .
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