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sum first matrix and second matrix

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abdullah qasim
abdullah qasim 2019-1-12
评论： Walter Roberson 2019-2-17
I want to collect the first function and the second function but there is an error there is no help ('Xf ').
x=[-1 8 2 -3 -5 6 -4 5 -8 7 -9 4 5 -10 -6 -11 8 3 7 1 -5 -20 14 18 19 -16 8 16 -17 -15];
Xp=x(x>0);
Xn=x(x<0);
figure(1)
stem(Xn);
title('negative signal');
Xn=abs(Xn);
figure(2)
stem(x);
title('orginal signal');
figure(3)
stem(Xp);
title('positive signal');
figure(4)
stem(Xn);
title('abs negative signal');
Xf=Xp+Xn;

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采纳的回答

Walter Roberson
Walter Roberson 2019-1-12
Your Xp and Xn are different lengths. You cannot add them. And if you could, what would the answer mean ?
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abdullah qasim
abdullah qasim 2019-2-17
How can I keep track of the size of at least one of the two if I need to separate them out again?

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