how to combine two matrices?
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arian hoseini
le 10 Jan 2022
Commenté : arian hoseini
le 11 Jan 2022
A=[Pg; 0.5;0.6;0;0;0]
B=[0;0;0;0.7;0.7;0.7]
1)the answer i need is C=[Pg;0.5;0.6;0.7;0.7;0.7]
i tried C=[A,B] but thats not what i want.
2)how can i add zero to matrix D if first value of A is Pg.
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Les Beckham
le 10 Jan 2022
Maybe this is what you want for #1:
Pg = 1; % example value for Pg
A=[Pg; 0.5;0.6;0;0;0]
B=[0;0;0;0.7;0.7;0.7]
C = A+B
For #2:
if A(1) == Pg
% Do something to D
end
3 commentaires
Les Beckham
le 11 Jan 2022
Modifié(e) : Les Beckham
le 11 Jan 2022
It really depends on what you want to do. In the specific example you give in the question the first three elements of B and the last three elements of A are zero so adding them essentially replaces those elements. This is true regardless of the sign of Pg.
If you want to combine a portion of A with a portion of B you could do something like this:
Pg = 1; % example value for Pg
A = [Pg; 0.5; 0.6; 2; 2; 2]; % note that I've replaced the zeros with twos as an example
B = [2; 2; 2; 0.7; 0.7; 0.7];
C = [A(1:3); B(4:6)]
Note that we get the first three elements of A and the last 3 elements of B.
To learn more of the basics of Matlab (indexing is especially relevant to your questions), I suggest that you take advantage of the free online training available here: https://www.mathworks.com/learn/tutorials/matlab-onramp.html
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