vector to struct without loop
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I have two vectors, one with ids and another with information for each id. For each id, the vector with information has, potentially, a different number of entries. I want to assign this to a struct, ideally without using a loop as the information vector/struct is used within an optimization routine and it changes every time there is a new iteration.
This is the example:
id=[1 1 1 2 2 3]';
info = [0.5 1 10 1 0.3 -200]';
In this case, id 1 has three elements in the information vector, id 2 has two, and id 3 has one. With the loop, I would do
for i = 1:max(id),
m(i).info = info(id==i);
end
Is there anyway to do this without using the loop?
Thanks
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采纳的回答
Walter Roberson
2017-1-1
t1 = [find(diff(id).'), length(id)];
t2 = [t1(1), diff(t1)];
m = struct('info', mat2cell(info, t2, 1));
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