label a matrix according to another label matrix

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em
em 2014-11-11
回答： Azzi Abdelmalek 2014-11-11
I have a label matrix A
A=[1 1 1 1; 1 1 2 3; 3 2 1 4]
I have another boolean matrix B, each element labels each label in matrix A to be true or false
B=[0 0 1 1] % in A, label 1 and label 2 are false, label 3 and label 4 are true
How can I change matrix A according to B, result would look like:
A=[0 0 0 0; 0 0 0 1; 1 0 0 1]

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回答（2 个）

Sean de Wolski
Sean de Wolski 2014-11-11
>> C = ismember(A,find(B))
Enjoy!
Azzi Abdelmalek
Azzi Abdelmalek 2014-11-11
A=[1 1 1 1; 1 1 2 3; 3 2 1 4]
B=[0 0 1 1]
C=ismember(A,find(B))

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