How do I add numbers in a cell to another cell?

"R" = random number

A = {[R R X R]}

B = {[R X R X]}

How do I add the X's in cell "B" to the X in cell "A?"

[James Tursa]

Please provide a small example of inputs and desired output so we know for sure what you are asking. Based on your wording, this is what you could do:

A{1}(3) = A{1}(3) + B{1}(2) + B{1}(4);

[Austin Sowers]

How would I do that, same concept, but the -10's (cells below) represent the X's from before in CA. The values to add would be, for example, the 4 and 2 in the first group of CB. I am looking for a general way to do this based on random -10 locations.

CA = {[5 -10 2],[6 6 8],[0 9 -10 8 -10 3]};

CB = {[4 17 2],[6 6 10],[9 3 4 9 7 6]};

[James Tursa]

We are still trying to figure out the rules for your adding. What would be the desired result fot this latest example?

[Austin Sowers]

The new CA, after the adding, would be:

CA = {[5 -4 2],[6 6 8],[0 9 2 8 5 3]};

First one adding 4 and 2. Second adding 3 and 9. Third adding 9 and 6. All these values from "CB" adding to the -10 in "CA."

[Austin Sowers]

Is this possible to do?

[James Tursa]

So it appears that when you encounter a -10 in CA, you want to add the two immediate neighboring numbers from CB to it. Correct? What if the -10 is on an edge/end?

[Austin Sowers]

Good question. I will be ignoring the ones on the end for this reason.

and yes. that is correct. exactly

Answer 1

[gonzalo Mier]

A{1}(B{1}==X) = B{1}(B{1}==X)

[Austin Sowers]

The X's represent the position of the random number. So all three X's could also be different numbers

[Austin Sowers]

Using a numeric example:

A = {[2 3 7 1}]

B = {[1 7 9 3}]

Id want to add 7 and 3 in B to the 7 in A

[gonzalo Mier]

Use the solution of James Tursa of the comments: https://www.mathworks.com/matlabcentral/answers/459692-how-do-i-add-numbers-in-a-cell-to-another-cell#comment_700634