How to use structure variable names in for loop

Hello,

I have a .mat file from a source containg structures with variable names as A,B,C etc.

I'm loading those to my workspace,creating a array for variable names and want to access the structures in a for loop. Error Dot indexing is not supported for variables of this type.

----------------------------------------------------------------------------

Structure names={'A','B','C'}

for i=1:3

output= Structure names(i).fieldname

end

[Tommy]

What is your struct named? The below code shows how you can loop through each field in a struct called S:

names = fieldnames(S);
for i = 1:numel(names)
    disp(S.(names{i}))
end

[jinang patel]

I have "n" structures, each with unique names. I want to access a particular fieldname in each structure. So I thought creating a array with unique structure names= {'A','B'.....'n'} and then

for i=1:n

output= structure names {i}.fieldname

but this is not possible since structure names {i} returns a character 'A'

[Tommy]

Oh I see. Instead of storing the names of the structures in a cell array, can you store the structures themselves?

Structure={A,B,C,..,n};
for i=1:numel(Structure)
output= Structure{i}.fieldname;
end

[jinang patel]

Great that works!! Thanks

[Tommy]

Fantastic! Trying to break a habit of answering questions in the comments...

Answer 1

[Tommy]

Loop through the structures instead of their names:

Structure={A,B,C,..,n};
for i=1:numel(Structure)
output= Structure{i}.fieldname;
end