How to call on an object's location in a matrix?

Hello, currently I have a three dimensional array of a particular size. I have a code that fits data to a particular equation. What I want to do is make a for loop that runs this code on each x,y location in the array. The 'data' or inputs for the code will be every number in that specific location in the z direction. Therefore, every array element in location (1,1) and through the depth of the array will be input into the code. This will be run on every x,y location. Then, I want the output of the code to be written to a new 2d array in the correct element location. So after the (1,1) elements are run through the code, the 'answer' of the code will be written to the new array in location (1,1). However, I am not sure how this for loop should be written, or how to call on the particular location that the for loop is being run on so that the output can be written in the corresponding location on the new array. Any help would be greatly appreciated, thank you!

[Walter Roberson]

Duplicated by https://www.mathworks.com/matlabcentral/answers/367484-how-to-call-on-an-object-s-location-in-a-matrix which has an answer.