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Warning: Using only the real component of complex data.

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Pablo Álvarez García
编辑： Yongjian Feng 2022-2-11
%¿por que me da este warning?
n=0:5:50;
x= exp(j*pi*n);
stem(x)

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Yongjian Feng
Yongjian Feng 2022-2-11
编辑：Yongjian Feng 2022-2-11
j is the imaginary unit here, so x is complex. stem is not used to plot complex numbers, that is why only the real component is used.
Maybe you want to plot the real part and/or the imaginary part?
stem(real(x))
stem(imag(x))

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