how know size of field struct
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hi,
Sis is a struct
D is a field of struct
size(Sis.D)
>> size(Sis.D)
Error using size
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Walter Roberson
2023년 6월 5일
What you failed to indicate is that Sis is a non-scalar struct. Sis.D is then "struct expansion". So
size(Sis.D)
is the same as if you had written
size(Sis(1).D, Sis(2).D, Sis(3).D, Sis(4).D, up to Sis(63).D)) %or whatever the size of Sis is
You can inquire about size(Sis(1).D) or size(Sis(end).D) or as appropriate.
If you need to know the size of each of the Sis.D entries then
SisSizes = arrayfun(@(S) size(S.D), Sis, 'uniform', 0);
If all of the Sis.D entries had the same dimension then you could also proceed to
SisSizeArray = cell2mat(SisSizes(:));
which would be a numeric array with numel(Sis) rows and numdim(Sis(1).D) columns
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추가 답변 (1개)
the cyclist
2023년 6월 5일
That command will give an error for some values of Sis.D, and not for others. Regardless, I don't think it will do what you expect. For example, what do you think size(Sis.D) should give for the following struct?
Sis(1).D = [1 2];
Sis(2).D = [1 2 3];
Sis(3).D = [1; 2; 3];
Perhaps you should upload your data, and explain what you are trying to do.
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