How do I call on each point in a triplet individually, so that I can perform a calculation on each triplet set?

The other day, Matt J offered a great solution to my first problem, which was: "What is the best way to store groups of 3 nearest non-zero pixels?"

I would like to build on his answer to now perform a calculation on each triplet set (see attached file), but I need to call on each point of the triplet set within an equation. After that, I'll need to iterate in a loop to perform the same calculation on every triplet set. What is the best way to do this?

[dpb]

Well, I didn't see that posting and answer but the sidebar found it as a related link.

Matt returned the triplets to you in a cell array, each cell containing a 2x3 array.

So, as he shows in that thread, to reference any given triplet set is just T{i}; the elements within are referenced by ordinary parentheses --

T{1}(1,:)

will return the first row from the first cell. Any of the indices can be variables and iterated over with loop indices at will.

[Steve]

Hi,

I need to call on specific items (e.g., the x coordinate, of the second variable, in the 4th Triplet set). How do I do this? Thanks for your help!

Best,

SD

[dpb]

As outlined above...

T{4}(2,1)

See access-data-in-a-cell-array

[Steve]

Thank you. How do I accept this answer? The button is not showing.

[the cyclist]

It's a comment, not an answer, so cannot be formally accepted.