numpy vdot

numpy.vdot

<font color=blue>numpy.vdot(a,b)</font>

numpy.vdot(a,b)

Return the dot product of two vectors
The vdot(a,b) function handles complex numbers differently thant dot(a,b).If the first argument is complex the complex conjugate of the first argument is used for the calculation of the dot product.

Note that vdot handles multivimensional arrays differently than dot,it does not perform a matrix product,but flattens input arguments to 1-D vectors first. Consequently,it should only be used for vectors.

Examples

>>>a=np.array([1+2j,3+4j])
>>>b=np.array([5+6j,7+8j])
>>>np.vdot(a,b)
(70-8j)
>>>np.vdot(b,a)
(70+8j)

Note that higher-dimensional arrays are flattened

>>>a=np.array([[1,4],[5,6]])
>>>b=np.array([[4,1],[2,2]])
>>>np.vdot(a,b)
30