Echarts在线免费图表

 
              var a = 18; //X fontSize

  var option = {
      title:{
          show:true,
          text:'m/s',
          top:'top',
          left:'center',
          textStyle:{
              fontSize:14
          }
      },
      tooltip: {
          trigger: 'item',
          formatter: "{a} <br/>{b} : {c} "
      },
      angleAxis: {
          type: 'category',
          data: ['0°', '45°', '90°', '135°', '180°', '225°', '270°', '315°'],
          z: 1,
          boundaryGap: false,
          //startAngle:45,//倾斜度
          axisLine: {
              lineStyle: {
                  color: 'grey'
              }
          },
          splitLine: {
              show: true,
              lineStyle: {
                  color: 'grey'
              }
          }
      },
      radiusAxis: {
          splitLine: {
              lineStyle: {
                  color: 'grey'
              }
          }
      },
      polar: {
          center: ['50%', '50%'],
          radius:'80%'
      },
      grid:{
          left:'20',
          right:'20',
          containLabel: true,
      },
      series: [{
          type: 'bar',
          data: [1, 2, 3, 4, 3, 5, 1, 2],
          coordinateSystem: 'polar',
          name: '风速',
          stack: 'a',
          itemStyle: {
              normal: {
                  color: function(params) {
                      var colorList = ['#5cc6ca', '#d87a7f', '#f5b97f', '#5ab1ef', '#b6a2de', '#8d98b3', '#e5d02d', '#97b552', '#956f6d', '#d0579c'];
                      return colorList[params.dataIndex];
                  },
              },
          }
      }],
  };