How to use structure variable names in for loop

2020 4 28
1 个回答
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更新时间：2020 4 28
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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

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Tommy
Tommy 2020-4-28
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
jinang patel 2020-4-28
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
Tommy 2020-4-28
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
Tommy
Tommy 2020-4-28
Fantastic! Trying to break a habit of answering questions in the comments...

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 采纳的回答

Tommy
Tommy 2020-4-28

0 个投票

Loop through the structures instead of their names:
Structure={A,B,C,..,n};
for i=1:numel(Structure)
output= Structure{i}.fieldname;
end

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