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Waterfall plot
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<p>Waterfall plots are often used to show how two-dimensional phenomena change over time. A three-dimensional <i>spectral waterfall plot</i> is a plot in which multiple curves of data, typically <a href="/facts/Spectrum/wPUjkpqI">spectra</a>, are displayed simultaneously. Typically the curves are staggered both across the screen and vertically, with "nearer" curves masking the ones behind. The result is a series of "mountain" shapes that appear to be side by side. The waterfall plot is often used to show how two-dimensional information changes over time or some other variable such as <a href="/facts/Rotational_speed/DAVXQgXj">rotational speed</a>. Waterfall plots are also often used to depict <i><a href="/facts/Spectrogram/Jt8zHI0H">spectrograms</a></i> or <i>cumulative spectral decay</i> (CSD). </p>