how do i make a for loop picking out adjacent values of an 2D array

For example

I have the matrix

A= [1 3 4 7 3;
    5 4 3 7 2;
    9 8 6 5 2;
    9 6 3 1 6;
    2 9 6 8 5]

My current position is at A(3,3) which is equal to 6. How do I make a loop that will pick out the minimum adjacent values of 6 which are [7 5 1]

Answer 1

[Image Analyst]

Assuming you actually meant [7; 5; 1] instead of [7 5 1], you can get the three elements in the column to the right of some specified element like this:

A = [1 3 4 7 3;
  5 4 3 7 2;
  9 8 6 5 2;
  9 6 3 1 6;
  2 9 6 8 5]
row = 3; % Whatever...
col = 3;
output = A(row-1:row+1, col+1)

[Image Analyst]

You'd have to check the rows and columns to make sure they are not outside the array. Here is how to check the row:

row1 = max(1, row-1);
row2 = min(size(A, 1), row);
output = A(row1:row2, col+1)