how to read surrounding matrix elements following list of coordinates

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how to read surrounding matrix elements following list of coordinates answer to reddit.com question
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answer to reddit.com matlab question
https://www.reddit.com/r/matlab/comments/4d1r6y/is_it_possible_to_convert_mutliple_local_regions
Q:
For example, if I have a 10×10 matrix, and I have a list of n coordinates in that matrix, I would like to take a 3×3 region surrounding each coordinate, resize it to be a length 9 vector, and then stack all the vectors into a 9×n matrix. I know I could write a for loop to do this but that seems gross, though probably what I'll end up doing.

Cite As

John BG (2024). how to read surrounding matrix elements following list of coordinates (https://www.mathworks.com/matlabcentral/fileexchange/56345-how-to-read-surrounding-matrix-elements-following-list-of-coordinates), MATLAB Central File Exchange. Retrieved .

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1.0.0.0