problem to implement an algorithm

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Khalid Sherif 2020-12-24

评论： Khalid Sherif 2020-12-25

I want to implement the algorithm in matlab but what I underlined with red is confusing me a little bit.

Is there a function in matlab that does this action, or do I just type path(i,j) and it will add on its own?

William 2020-12-24

Given what John said, you should rename 'path' to something else, like 'pathij'. Then at the beginning of the code set

pathij = [];

and at the location of your red line you can use:

pathij = [pathij; i j];

If you can anticipate how many values of i,j there will be (let's say N), then it is more efficient to give the array pathij an explicit size, with:

pathij = zeros(N,2);
n = 1;

Then, at the red line you would use:

pathij(n,:) = [i j];
n = n+1;

Khalid Sherif 2020-12-25

Thank you William, that worked.

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