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Logical indexing of nonscalar structures

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Octavian
Octavian 2021-1-30
回答： Jan 2021-1-30
Dear All,
I have a nonscalar nested structure s of length n, I need to index field e in s (s.a.b.c.d.e). I can do it with a loop,
for i = 1:length(s)
s(i).a.b.c.d.e = g(x(i));
end
where x is a logical array. I wanted to know if it is possible to use x for indexing s(x).a.b.c.d.e = g(x); I have lots of such assigments in my code, so it is important to know. For now, I get a dot indexing error when trying the logical indexing.
Thank you,
O

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回答（2 个）

Matt J
Matt J 2021-1-30
No, it is not possible.
Jan
Jan 2021-1-30
There is no abbreviation. There is no method for vectorizing the access of nested struct arrays.
Maybe a tiny acceleration:
gx = g(x);
for i = 1:length(s)
s(i).a.b.c.d.e = gx(i);
end

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