How do I create a for loop with fields of structures?

Hello. Im not an expert using matlab and this is my first time working with data in structures.

I have a structure that has another structure inside (see attached pictures) and I want to calculate the percentage of data that remain after filtering, my first approach is:

nt= length(Global_Data.FilteredData)
for i=1:nt
F= length(Global_Data.FilteredData(i).DTTM)
R= length(Global_Data.FreeAna_data(i).DTTM)
P= (F/R)*100
end

But with these I only get one value of P, and I need the percentage for each item (118)

Thanks in advance for your suggestions

Answer 1

[Kelly Kearney]

In your current code, you're saving over P on each iteration of the loop. Instead, save to an array:

nt= length(Global_Data.FilteredData);
P = zeros(nt,1);
for i=1:nt
    F= length(Global_Data.FilteredData(i).DTTM)
    R= length(Global_Data.FreeAna_data(i).DTTM)
    P(i)= (F/R)*100
end

[MARGE]

Thanks a lot! :)

Answer 2

[Sulaymon Eshkabilov]

You can try to work with fieldnames() and getfield() names, e.g.:

Fnames = fieldnames(Global_Data);
for ii = 1:length(Fnames)
    Fi = getfield(Global_Data,Fnames{ii});
...
    P = ...;
end