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How to subtract from a vector array and, if the answer is lees than 0, have it return a value of 0
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I'm trying to subtract a number from a specific value in a vector. Then, if the answer is less than 0, I want it to return the answer with it being rounded to 0.
this is what I meam
%example%
x = [1 2 3]
x(1)-2
%the result would look like this%
x =
-1 2 3
%but I want it to look like this%
x =
0 2 3
How do I do this without using conditionals?
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Answers (2)
David Hill
on 15 Sep 2020
x=[1 2 3];
x=x-2;
x(x<0)=0;
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David Hill
on 15 Sep 2020
x=[1 2 3];
amountbelowzero=zeros(size(x));
x=x-2;
amountbelowzero(x<0)=abs(x(x<0));
x(x<0)=0;
John D'Errico
on 15 Sep 2020
Edited: John D'Errico
on 15 Sep 2020
Simple. No need to test anything either. Just use the max function.
x = [1 2 3];
x(1) = max(x(1) - 2,0);
x
x =
0 2 3
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