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one Structure Aceess Problem

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ar fa
ar fa 2015-6-14
关闭： MATLAB Answer Bot 2021-8-20
I have these below codes:
a(1).x = [5 9];
a(2).x = [4 41];
a(3).x = [7 0];
a(4).x = [23 45];
a(2:3).x(1);
After running these codes, I encountered to below Error:
Scalar index required for this type of multi-level indexing.
Please help me to access to "a(2:3).x(1)" as [4 7].
Thanks

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回答（1 个）

Walter Roberson
Walter Roberson 2015-6-14
MATLAB doesn't allow that.
In the particular case that the vectors are the same size for the structure members, you can use
t = vertcat(a(2:3).x);
t(:,1)
If they are not the same size then
cellfun(@(C) C(1), {a(2:3).x})

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