dot product function in Matlab

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2016 12 27
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更新时间：2023 11 25
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Hello, I just tried to do in Matlab :
I=eye(3)
dot(I,I)
--> the result is [1 1 1]
To my understanding it clearly should be [0 0 0] !!! Why does it produce 1 1 1 ?
Best regards,
(P.S. It works correctly with other e.g. random matrices)

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Walter Roberson
Walter Roberson 2016-12-27

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dot(A,B), for N-D arrays A and B, returns the scalar product
along the first non-singleton dimension of A and B. A and B must
have the same size.
>> dot(I(:,1),I(:,1))
ans =
1

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AD
AD 2016-12-27
移动：John D'Errico 2023-11-25
or sorry .. I made a mistake ... what I did was useless, I was projecting it on itself - so to speak.
projecting each vector on himself gives his own norm

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