A visualization of the Discrete Fourier Transform for n=8. The vector exp({i}*2*pi*jk/n) is represented as a unit vector in the complex plane.
<a href="https://en.wikibooks.org/wiki/en:User:MickLinux~enwikibooks" class="extiw" title="b:en:User:MickLinux~enwikibooks">en:User:MickLinux~enwikibooks</a> (<span lang="en" dir="ltr">Original text: <i><bdi lang="">Michael Rudmin (made myself)</bdi></i></span>)
<span class="int-own-work" lang="">Own work by the original uploader</span>