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if i want to change each value 1 in a matrix to 0 how to do that?

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mary
mary 2013-12-4
评论： mary 2013-12-7
a=[1 2 3;1 3 3;2 1 2]
is there a function that make a as below
b=[0 2 3;0 3 3;2 0 2]
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José-Luis
José-Luis 2013-12-4
Is this homework?
This can be solved with a combination of loops (for) and conditional statements (if), or in a syntactically simpler way with logical indexing.
mary
mary 2013-12-4
nop i just want a function some reduced thing instead of using loops

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José-Luis
José-Luis 2013-12-4
b = a;
b(b==1) = 0;

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