Function tricube

docs/app/js/sanddance-app.js:119892–119894

(x)

    return output(xv, yhat, ux, uy);
} // weighting kernel for local regression
function tricube(x) {
    return (x = 1 - x * x * x) * x * x;
} // advance sliding window interval of nearest neighbors
function updateInterval(xv, i, interval) {
    const val = xv[i];
    let left = interval[0], right = interval[1] + 1;