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Map an array yo another one

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evangeline
evangeline 2018-2-15
编辑： Stephen23 2018-2-15
I have an array like: A=[3,5,6,10] and I need to map it to another one like: B=[1,2,3,4] so instead of returning A, I can return B. how can I do this?
  2 个评论
Guillaume
Guillaume 2018-2-15
The question is really not clear. What does map mean? How do you go from [3 5 6 10] to [1 2 3 4]? What is the rule?

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回答（2 个）

Andrei Bobrov
Andrei Bobrov 2018-2-15
编辑：Andrei Bobrov 2018-2-15
A=[3,5,6,10];
B=[1,2,3,4];
C = randsrc(8,5,B);
ii = discretize(C,B);
out = A(ii);
Stephen23
Stephen23 2018-2-15
编辑：Stephen23 2018-2-15
Use interp1:
>> A = [3,5,6,10];
>> B = [1,2,3,4];
>> interp1(A,B,[5,10])
ans =
2 4

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