Processing purely imaginary numbers

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Alex Wylie
Alex Wylie 2017-2-14
评论： Adam 2017-2-15
Hey,
I've got a vector of purely complex numbers (ie. the real component = 0). However the processing time of it is taking a long time and I think it's because MATLAB is doing conjugate multiplication. When I print out the vector is is in the form 0 + bi .. how can I make Matlab just read it as a purely imaginary number such as bi and process it quicker?
Thanks for your time, Alex.

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Adam
Adam 2017-2-14
You can just use
imag( myVector )
to get the imaginary part as a standard non-complex double and then do your maths on that, as though it where the imaginary component.
  2 个评论
Alex Wylie
Alex Wylie 2017-2-15
I didn't meant to accept it, I actually need to do my maths on an imaginary number and imag(A) just gets the imaginary component of the vector and turns it real. I need imaginary ...
Adam
Adam 2017-2-15
Does the maths re-introduce a real part? In which case there is probably no alternative to just using it as is. If it doesn't I don't see why you need it as imaginary. You can turn it back to imaginary at the end of the maths if it stays purely imaginary throughout.

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