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Doubt on fft function

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Pooja
Pooja 2013-2-7
关闭: MATLAB Answer Bot 2021-8-20
x=[1 2 6] x=fft(x) x =
9.0000 -3.0000 + 3.4641i -3.0000 - 3.4641i
x=x>-3
x= 1 0 0.
why this is coming as binary ?can this idea could be used as a binary coder? Expecting your kind reply.Thank you.

回答(1 个)

Walter Roberson
Walter Roberson 2013-2-7
It isn't coming out as binary: it is coming out as logical, as you have assigned the result of the comparison to the variable "x".
If you are trying to extract the elements that are greater than -3 then
x(x>-3)
Please be careful about using comparison operations with complex data.
  2 个评论
Pooja
Pooja 2013-2-7
编辑:Pooja 2013-2-7
Sir,from where we get solutions to these type of problems.From any matlab books?

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