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This is not the same as the recent thread on a waterfall graph. I'm thinking about the rolling FFT display used in acoustics and other spectrum analysis tasks. Here's an example of a very fancy 3-D waterfall display: http://www.ultimaserial.com/UltimaWaterfall.html I was just wondering if there are any simple hidden-line tools in R that I could use to draw simple waterfall displays. Basically, I'd like to plot a time-series of FFTs (or equivalent) and use hidden-line tools to produce a clean-looking graph. I know I could hac...