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condition checking in matlab

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subha
subha 2013-11-3
评论： subha 2013-11-3
i want to verify each element in the matrix and keep that value in the same place if its true otherwise i want to make it as 0.
example: say x=[0.1 0.2 0.3;0.4 0.5 0.6;0.7 0.8 0.9]
i want to check two condition 1.Y=x>0 &x<0.25 2.Z=x>0.25 & x<0.5
i want both Y and Z to be in same size.so,want to add zeros in all the other locations where condition is not satisfied.Can anybody help?
i used ind=find(x>0)&(x<0.25) and then y(ind). but it produces an array.how to get matrix of size x with added zero in remaining all places.

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采纳的回答

the cyclist
the cyclist 2013-11-3
Here's one way:
ind = (x>0)&(x<0.25);
y = ind.*x;

更多回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-11-3
x=[0.1 0.2 0.3;0.4 0.5 0.6;0.7 0.8 0.9]
y=zeros(size(x))
z=y;
idy=x>0 & x<0.25
idz=x>0.25 & x<0.5
y(idy)=x(idy)
z(idz)=x(idz)

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