How to save multiple matrices in multiple files? I solved the first two parts using for loop but couldn't do the 3rd one.How to save these multiple matrices in separate files?

[Dyuman Joshi]

I think the instructions are fairly clear. What have you tried so far? Where did you get stuck?

[AKASH TYAGI]

I also tried one more thing. I tried to name the matrices differently using

A(n)=magic(n)

It didn't work as it said left and right side element are NOT equal.

So challenge remaining is store the magic matrices in different names say A1, A2 etc. and then save these in magicmatrix1, magicmatrix2...

This is the last thing I tried and now i can't think of anything else.

[AKASH TYAGI]

Thank you for the reply @Dyuman Joshi .

Here is what I wrote for first two and what i tried for the 3rd one.

for n=20:5:50

A=magic(n)

outputfile=['magicmatrix',int2str((n/5)-3)]

end

This solved the first two parts.

Then I ran out of ideas! I tried-

save magicmatrix1 A

It saved the last one (Magic(50) ) in magicmatrix1 file.

Issue is I have 7 separate matrices saved in A.. and I want to save each of them separately in separate files starting from magicmatrix1 , magicmatrix2 ... so on. To be honest, I don't know what to do.

Thanks for reading and please help if you can.

[Stephen23]

"So challenge remaining is store the magic matrices in different names say A1, A2 etc. "

You could do that if you want to force yourself into writing slow, complex, inefficient, obfuscated, buggy code that is difficult to debug.

Or you could:

• just write each array to file, without storing them all, or
• use indexing, which is neat, simple, and very efficient.

Answer 1

[Dyuman Joshi]

%Saving magic matrices in files
for n=1:7
    A=magic(5*n+15);
    filenames=sprintf('magicmatrix_%d.mat',n);
    save(filenames);
end

%clear workspace variables
clear all

%Loading saved files
for j=1:7
    filenamel=sprintf('magicmatrix_%d.mat',j);
    y=load(filenamel,'A');
    figure %creates a new figure window
    image(y.A) %display image
end

[AKASH TYAGI]

Thanks a lot, Mr Joshi. @Dyuman Joshi

[Dyuman Joshi]

If your issue is resolved, please accept the answer!

[AKASH TYAGI]

👍👍👍