Question

I am dealing with a small tricky issue in matlab:

I want to assign values to a dynamically created struct (2. level):

my struct looks like this:

a.b.c = 1    %Creates a struct with two levels

now I want to autofill a.b with c1, c2, c3,...cn as neighbor-elements to c. Also the firste leven b must be changed dynamically, so I can not hardcode any ‘path’…All values consist of a prefix (e.g. b or c) and a postfix (just a number increased by a loop)

My main concern is, that this process MUST be done by a loop and not by hand (otherwise I would do many copy/paste lines with manual edits).

It would be great if someone could give me a hint.

greets, poeschlorn

Answer 1

I’m not exactly sure if this is what you’re looking for. It uses dynamic field names to create eleven b entries and n c entries:

>> n = 5;
>> for ii = 1:11
for jj = 1:n
a.b(ii).(sprintf('c%u', jj)) = 1;
end
end
>> a

a = 

    b: [1x11 struct]

>> a.b(1)

ans = 

    c1: 1
    c2: 1
    c3: 1
    c4: 1
    c5: 1

>> a.b(3)

ans = 

    c1: 1
    c2: 1
    c3: 1
    c4: 1
    c5: 1