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    <h1>Create FFT definitions</h1>
    <small class="dont-index">Source: <a href="https://github.com/ndphillips/FFTrees/blob/HEAD/R/fftrees_define.R" class="external-link"><code>R/fftrees_define.R</code></a></small>
    <div class="hidden name"><code>fftrees_define.Rd</code></div>
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    <div class="ref-description">
    <p><code>fftrees_define</code> defines fast-and-frugal trees (FFTs)
either from the definitions provided 