Method updatePoints

src/heatmap.ts:145–150

(points: Example2D[])

  }

  updatePoints(points: Example2D[]): void {
    if (this.settings.noSvg) {
      throw Error("Can't add points since noSvg=true");
    }
    this.updateCircles(this.svg.select("g.train"), points);
  }

  updateBackground(data: number[][], discretize: boolean): void {
    let dx = data[0].length;