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condition checking in matlab

Asked by subha on 3 Nov 2013
Latest activity Commented on by subha on 3 Nov 2013

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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subha

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2 Answers

Answer by the cyclist on 3 Nov 2013
Accepted answer

Here's one way:

ind = (x>0)&(x<0.25);
y = ind.*x;

1 Comment

subha on 3 Nov 2013

thanks

the cyclist
Answer by Azzi Abdelmalek on 3 Nov 2013
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)

1 Comment

subha on 3 Nov 2013

thanks all for your valuable reply

Azzi Abdelmalek

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