How can I manipulate with fields in structure.
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I have struct s with 96 fields that have different names, each field is 44x1 column of numbers.
is it possible to divide all numbers in each field by some number, or use reshape to make from 44*1 to 11*4 matrix, or for example find max from each field and make a new array from those maximum values.
采纳的回答
You can use structfun() for that:
% creating a struct like yours but with only 3 fields:
s = struct('field1',zeros(44,1),'field2',ones(44,1),'field3',randn(44,1))
% divide by 7:
s_new = structfun(@(x)x/7,s,'UniformOutput',false)
s_new.field2
% reshape:
s_new = structfun(@(x)reshape(x,11,4),s,'UniformOutput',false)
% get the max:
s_max = structfun(@max,s)
2 个评论
Kiryl Zhaliazka
2022-3-4
Voss
2022-3-4
You're welcome!
If that answers your question, please consider marking the answer as 'Accepted'. Thanks!
更多回答（1 个）
Jan
2022-3-4
A loop over the field names can achieve this:
s = struct('field1',zeros(44,1),'field2',ones(44,1),'field3',randn(44,1)); % Thanks _
Field = fieldnames(s);
for k = 1:numel(Field)
s.(Field{k}) = s.(Field{k}) / 17;
% Or: s.(Field{k}) = reshape(s.(Field{k}), 4, 11);
end
This is done in structfun also, but the loop runs faster and is easier to read, in my opinion.
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