how I can automatically save the output of a for loop?

I created a loop that performs operations on a series of 2D matrices, each cycle I want to save the output matrix, so I need a way to automatically save these matrices creating an automatic generation of file names

[Anand]

Store each matrix in an array

Ex

for k=1:1:(no of matrices)

A{k}=result

end

you can view any result by A{1}, A{2}...

[Francesca Di Nicola]

Thanks, I try

[Francesca Di Nicola]

I created a Cell Arrays (1x200), now, how can I save the numerical matrix?

Answer 1

[Star Strider]

If you’re creating a series of 2D matrices, I would concatenate them into a single resultant 3D matrix (use something like: Savemat=cat(3, Savemat, Mat); then save the updated ‘Savemat’ in the same .mat file at each iteration, or preferably after the loop.

That way, you have all your 2D matrices in one 3D matrix that you can load from one file and easily address in your code.

[Francesca Di Nicola]

I have already tried with the 3D matrix, but then I have trouble making the subsequent operations between matrices 3D

[Star Strider]

To use a particular page (third dimension) of a 3D matrix, you have to address it specifically:

M = Savemat(:,:,5);

This creates ‘M’ as the 5th page — corresponding to the 5th iteration of your loop — to use in any calculations that require a 2D matrix. It would be easier than using a cell array, because there would be no need to convert from a cell array to a double array.

[Francesca Di Nicola]

the problem is that I need to create two 3D matrices and then multiply them together. I tried this but it does not start matlab for memory problems. I thought to do it without the 3D matrix but using a for loop is feasible

[Star Strider]

I thought from your Question that you had 2D matrices that you want to save. How do you intend to multiply your 3D matrices? What result do you want to get? I don’t understand what you’re doing.

[Francesca Di Nicola]

I have 16 data series, each series has 9000 file.mat, each file.mat contains a matrix (480x640) with temperature data. This matrix in all the files is called Frame. I need to: create a matrix that will call COND, cutting Frame to delete the data that are not needed, the difference with the T reference and then divide by a costane. create a matrix that will call CONV containing the media space of the Frame and then make a difference with the T reference make the product element by element between CONV and COND

this for each file.mat obviously I need to implement an automated way

[Star Strider]

This seems quite distant from your original Question here.

Create a new Question that describes in some detail what you really want to do, expanding on your last Comment. It seems like a much more complicated project than I want to deal with.

Write the code to implement it yourself. If you have problems with your code, post the relevant parts of it along with a description of what you want your code to do and what it is doing, including the entire red text of any error messages that your code throws.

We will then help you get it to run.

I will delete my Answer — including this Comment — in a few hours, since it does not address your actual problem.