saving each iteration of Nested for-loops in a matrix

Hi!

I have a nested for-loop (f. ex.: ii=1:length(x1), jj=1:length(x2),...) in which I call my function file. The function has several outputs. Now I want to save the outputs for each iteration and so create a matrix. Additionally I plot in the function file also and save it as png file. This should be saved as with the right iteration name (so that I lnow that this figure belongs to x1=4,x2=3,x3=2, x4=1)

How I can do this?

Answer 1

[Geoff Hayes]

Antonio - for any iteration you have a png image and several variables. Try saving all of this to a structure like

 data.x1 = 4;
 data.x2 = 3;
 data.x3 = 2;
 data.x4 = 1;
 data.img = ...;

Then save each of these structures to an array (or cell array) that is updated at each iteration of your inner loop. Using a structure allows you to keep all relevant info together, and putting it all in an array (cell or otherwise) keeps all of the output from each iteration together.

Answer 2

[Antonio Sereira]

Hi!

The problem is that I have to save each output in a matrix like the first column of matrix A (correspond to output y1) are the values for m=1. Second coulumn for m=2. The problem is my function has several outputs and I called all the outputs "Results=[y1,y2,y3,...]. And now I would like to do something like

"A_1(:,count)=Result(...)".

You understand what I mean?

[Stephen23]

If count is your loop variable and each of yN is scalar, then doing

A_1(:,count) = Result;

will allocate your vector Results to a new column of A_1, thus storing them. Try it!