const data = [];

for (let i = 0; i <= 360; i++) {
  const t = (i / 180) * Math.PI;
  const r = Math.sin(2 * t) * Math.cos(2 * t);
  data.push([r, i]);
}

export default {
  textStyle: {
    fontFamily: 'Inter, "Helvetica Neue", Arial, sans-serif'
  },
  title: {
    text: "Dual Numeric Axis"
  },
  legend: {
    data: ["line"]
  },
  polar: {
    center: ["50%", "54%"]
  },
  tooltip: {
    trigger: "axis",
    axisPointer: {
      type: "cross"
    }
  },
  angleAxis: {
    type: "value",
    startAngle: 0
  },
  radiusAxis: {
    min: 0
  },
  series: [
    {
      coordinateSystem: "polar",
      name: "line",
      type: "line",
      showSymbol: false,
      data: data
    }
  ],
  animationDuration: 2000
};