Function generateXYData

polynomial-regression/index.js:226–235

(canvas, coeffs)

// Generate x-y data based on the size of the canvas.
function generateXYData(canvas, coeffs) {
  const data = [];
  for (let x = -canvas.width / 2; x < canvas.width / 2;
       x += canvas.width / 25) {
    data.push([
      x, coeffs[0] * x * x * x + coeffs[1] * x * x + coeffs[2] * x + coeffs[3]
    ]);
  }
  return data;
}

// Fit a model and render the data and predictions.
async function fitAndRender() {