Get array of elements based on occurrences of another vector

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Enrico Gambini
Enrico Gambini 2022-9-9
回答： Matt J 2022-9-9
Hi guys!
Let's assume that you have 2 Nx1 arrays "y" and "x", is there a way to find all the elements of y corresponding to the unique elements of x?
E.g
y=[0;1;2;3;4];
x=[1;1;2;2;2];
%The results should be two vectors, one containing the elements [0;1] and the other one containing
%[2;3;4]
Thank you!

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采纳的回答

Torsten
Torsten 2022-9-9
Ran in:
y=[0;1;2;3;4];
x=[1;1;2;2;2];
z{1} = y(x==1);
z{2} = y(x==2);
z{1}
ans = 2×1
0 1
z{2}
ans = 3×1
2 3 4

更多回答（1 个）

Matt J
Matt J 2022-9-9
Ran in:
y=[0;1;2;3;4];
x=[1;1;2;2;2];
z=splitapply(@(x){x},y,x);
z{:}
ans = 2×1
0 1
ans = 3×1
2 3 4

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