"when I am restructuring the data it always a hassle to put every data holder variable to a proper place" If it's a hassle, then your storage structure is not optimal. You may be better off revising the way you store your data rather than constantly finding workarounds.
To answer your question, this should do what you want:
function into = mergestruct(into, from)
%MERGESTRUCT merge all the fields of scalar structure from into scalar structure into
validateattributes(from, {'struct'}, {'scalar'});
validateattributes(into, {'struct'}, {'scalar'});
fns = fieldnames(from);
for fn = fns.'
if isstruct(from.(fn{1})) && isfield(into, fn{1})
%nested structure where the field already exist, merge again
into.(fn{1}) = mergestruct(into.(fn{1}), from.(fn{1}));
else
%non structure field, or nested structure field that does not already exist, simply copy
into.(fn{1}) = from.(fn{1});
end
end
end
Test:
>> a = struct('a', 1, 'b', 2, 'c', 3, 'd', struct('a', 11, 'b', 12, 'c', struct('a', 111)))
a =
struct with fields:
a: 1
b: 2
c: 3
d: [1×1 struct]
>> a.d
ans =
struct with fields:
a: 11
b: 12
c: [1×1 struct]
>> a.d.c
ans =
struct with fields:
a: 111
>> b = struct('a', -1, 'b', -2, 'd', struct('b', -12, 'c', struct('b', -112)))
b =
struct with fields:
a: -1
b: -2
d: [1×1 struct]
>> aa = mergestruct(a, b)
aa =
struct with fields:
a: -1
b: -2
c: 3
d: [1×1 struct]
>> aa.d
ans =
struct with fields:
a: 11
b: -12
c: [1×1 struct]
>> aa.d.c
ans =
struct with fields:
a: 111
b: -112
Seems to do what you want.
