how to formulate if statement for a vector?
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Shubham Mohan Tatpalliwar
2018년 10월 15일
댓글: Shubham Mohan Tatpalliwar
2018년 10월 18일
A=[-3,-2,-1,1,2,3]
B=[-3,-2,-1,2,3,4]
i have 4 condition and have to slect only one when it satisfies.
- negative A negative B i.e. A=[-3,-2,-1,0,0,0] B=[-3,-2,-1,0,0,0]
- negative A positive B .
- positive A negative B.
- positive A positive B.
How can i select only one condition if input is in vector.
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Steven Lord
2018년 10월 15일
The elements at some of the locations of your vectors satisfy your first condition. Others satisfy the fourth condition. Do you want to choose one of those conditions at random and apply it to the entire A and B vectors, or do you want to apply the condition that each pair of corresponding elements satisfies to that element of the result?
What do you want to do if none of the conditions are satisfied?
A = zeros(1, 6);
The elements of A are neither positive nor negative.
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Torsten
2018년 10월 15일
편집: Torsten
2018년 10월 15일
if A<=0 & B<=0
...
elseif A<=0 & B>=0
...
elseif A>=0 & B<=0
...
elseif A>=0 & B>=0
...
end
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Jan
2018년 10월 17일
If A and B are vectors, the expression
if A<=0 & B<=0
is converted internally to:
if all(A(:)<=0 & B(:)<=0) & ~isempty(A) & ~isempty(B)
Writing this explicitly is less confusing in my opinion. Array-valued conditions of if commands are a frequent source of bugs.
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