How to compare a vector A of real numbers with a vector of zeros using equalities and inequalities?

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MRC 2013-12-9

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采纳的回答： Andrei Bobrov

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Hi, I have a vector A mx1 which should be compared with a mx1 vector of zeros. In particular: for the first n<m elements I want to obtain 1 if they are equal to zero; for the remaining m-n elements I want to obtain 1 if they are less than or equal to zero. I prefer no loops. For example:

m=5;
n=2;
A=[0; 1; -3; 1; 5];

I want to get

C=[1;0;1;0;0];

Thanks

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Andrei Bobrov 2013-12-9

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C = [A(1:n) == 0;A(n+1:end) <= 0];

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MRC 2013-12-9

What instead if I want A(1:n) approximately close to zero?

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