save for loop variable in workspace

Hello.

I am new to coding and have a question.

I'm running a script which gives produces many variables in the output inclduing a 1x1 structure with 6 fields, I want to save one of the fields: "PM.res" each time. I'm using loop numbers:

loop = 1

at the beginning and

loop = loop + 1

in the for loop so I will incorporate this when saving but I want to know how. I want to save each one as a variable in the workspace, so it can be used within the rest of the for loop.

Thank you.

Answer 1

[Stephen23]

Given that you are apparently incrementing your own loop counter then presumably you have a WHILE loop.

In that case, try this:

C = {};
loop = 1;
while ..
    .. your code here
    C{end+1} = PM.res;
    loop = loop+1;
end

https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-cell-array.html

If the total number of iterations is known in advance then a FOR loop would be simpler and more efficient.

[Sarah Philips]

Thank you for your help. If it is simipler, I do know that there will be 720 iterations what would you suggest?

I haven't used a while loop, but I included the counter to keep track of which part of the data the for loop is at.

[Stephen23]

"...but I included the counter to keep track of which part of the data the for loop is at."

FOR loops already have a "counter", in most cases there is no need to duplicate that information with your own separately-defined "counter" as well. Therefore you can write simpler and more efficient code:

N = 720;
C = cell(1,N);
for k = 1:N
    ..
    C{k} = PM.res;
end