How to separate all negative and all positive values of a vector?
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Sergey Dukman
el 23 de Sept. de 2015
Comentada: Brice Arthur Azangue
el 17 de Jun. de 2023
Hello, I baffled by one task in Matlab, namely I need to create two vectors that contains all positive and all negative values of an initial vector. I would like to get a general answer to my question. Here is my script (unfinished): for i=1:numel(x) if x(i) > 0 & x(i)==0 P(i)=????????(all positives) end end disp('The postive vector is:')
Sergey
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Stephen23
el 23 de Sept. de 2015
Editada: Stephen23
el 23 de Sept. de 2015
>> X = [1,2,-3,-4,5,-6,7,-8,9];
>> idx = X<0; % create logical index
>> neg = X(idx)
neg =
-3 -4 -6 -8
>> pos = X(~idx)
pos =
1 2 5 7 9
5 comentarios
Walter Roberson
el 20 de Mzo. de 2023
Do we understand correctly that there should be 11 different outputs?
- element in first vector and second vector are both positive
- element in first vector is positive, element in second vector is zero
- element in first vector is positive, element in second vector is negative
- element in first vector is zero, element in second vector is positive
- element in first vector is zero, element in second vector is zero
- element in first vector is zero, element in second vector is negative
- element in first vector is negative, element in second vector is positive
- element in first vector is negative, element in second vector is zero
- element in first vector is negative, element in second vector is negative
- element exists in first vector but you have run out of elements in the second vector
- element exists in second vector but you have run out of elements in the first vector
Or should the cases where you have run out of elements in one of the vectors each be split into the negative / zero /positive, leading to a total of 15 different cases?
Más respuestas (1)
RAM MANOHAR
el 23 de Jul. de 2019
I have used for , if --else loops but i have got positive and 0 in place of negative.
2 comentarios
Narendra Kintali
el 23 de Sept. de 2022
Hi Ram,
I even got zeros in the place of negative numbers.
How did you fix your code.
Walter Roberson
el 23 de Sept. de 2022
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