EChartsCustomized shape of dashboard pointer

Here I change the pointer to a sector chart, as follows

Mainly through the following code to implement custom-shaped pointers:

var option = {
        series: [
          {
            pointer: {
              icon: 'image://data:image/png;base64,iVBORw0KGgoAAAANSU...',
            },
          }
        ]
      };

The complete code is as follows:

var chartDom = document.getElementById('myChart');
      var myChart = echarts.init(chartDom);
      var option = {
        animation: false, // disable loading animation
        title: {
          show: true,
          text: 'Car Direction: ' + this.carDirection + '°' + '\\
' + 'Beam Direction: ' + this.beamDirection + '°',
          textStyle: {
            color: '#fff',
            fontWeight: 100,
            lineHeight: 30,
          },
          bottom: 20,
          backgroundColor: 'rgba(128, 128, 128, 0.5)',
        },
        series: [
          {
            name: 'Direction Table',
            type: 'gauge',
            detail: {
              formatter: '{value}°'
            },
            pointer: {
              icon: 'image://data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAAEsAgMAAAAEE2bmAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAJUExURUdwTD3C0gGtwt4G3EYAAAACdFJOUwCLDPmXkAAAA8dJREFUeNrtm7uR3DAQREEa MOhLBiJQIQqGIEfKQRsFQ1jj5MOgqriIUqvb + + 0dCcwMnkoy0AF04fC6j/itc11dXV1dXV1dXV0Sffuer7r8/Nrs9Cm/qs1tyHe6QINqHNrnnCmzkPd0pkZlHJnPR5obCbaYDaeC1y9i3p/1w EzWTQszWdoChJpXXqm/UMPyJPASspyyRGdk4hXTH2RekoEJh3UVN6ycEzesei6Cwitxw6rNWFB5lVGqrMoZm3RexYGdMjYwn7VasGHlvDGBKOc1GLxWJBDFvHqT1xma + cPZH7NNCzTzR7N/MnpdqJnfn/ 1g9tqYcB1EjPSK4N9on6 + 1 + V9q6XNEZmI0ey2OA/l3O2QOxQZ8G0urCo9hZP8XDkavGfsMHXyIIobR2u4VWTCVFprkt3bgMKLrCVO7j1aGEYuEDWRy3KLpaCU9Qs2m16uOi4QF5AbtrMrnFBMCQv IxXEbj5naPpZ3tuCeTx2KDdzXJsdtRkt75BGLhD4Us8NAls + tIoZR2 + 4VON + THQ6NGEYtyMoBGHhmpQpF7SgzYhh1IGuHjx5qtjYU1VN8DqMGZP1EOkLN1rW7frcwYZHQgKxfxgxUs1Wh gG5OpJcUAcMoB5kEXh5qtiYUovs5DqMUpOyqL0LNlodCdmvoMYxSkLJr1oFqtjgUwnvRiGGUgZRe /k5Qs6WhkD59GLFIyECK791PULNlodjEXgGLhASk/AXLyGEUtFvx5ISLRB3kpvAKGMZ6u5PCy2ORqIdC8aamClL1bugENbseik3lNWEYayB1b9NGDmOl3crHZBzGMshN6RWgZtdCkZReHsOIvgksgtRaFdq tf3kasUiUQCa1l4eaXW73ovYauEgcg7Q8II4YxuN2rwavCYvEMcjF4DVwGA/bbbE6CIXtTXnEInEEMpm8PNTs41AsJi/HYdwHaf1pQMQw7rd7NXpNWCT2QRox7rZ7Nno5LhJ7IC + g12r2mjCMe + 0 + m7 1GLBJ7IO1WH9rd8qOfCDV7r91rg9eEYfwIsgHjh3bPDV6Oi8R7kFuTV8AwvgeZmrw8Fon3oViavByH8b7dl0aviEXiHmT6j7xGDuNdu + dGL8dF4i3IrdkrQM2 + B5mavTzU7HuQzRjfgGy3emn3BfCK WCReQa6Al8cwvrZ7AbwGLhIvoSCsnkBuiFfAMD6HIiFeHovEM0gE4xNIxuqx3RfIK2KRuIFMkJfHMN7avUBeAxeJx1BQVleQG + YVoGbfQpEwrxHD + AckhvEKkrNyP0CvL66rq6urq6urq6vrX + g3QQ7YY w8YDCwAAAAASUVORK5CYII=',
              width: 80,
              length: '80%',
              offsetCenter: [0, 0]
            },
            startAngle: 90,
            splitNumber: 8,
            endAngle: 450,
            min: 0,
            max: 360,
            axisLabel: {
              color: 'auto', //auto is consistent with the color of the area
              fontSize: 20,
              distance: -50,
              formatter: function (value) {
                if (value === 0) {
                  return 'North';
                }
                else if (value === 45) {
                  return 'Northeast';
                }
                else if (value === 90) {
                  return '东';
                }
                else if (value === 135) {
                  return 'Southeast';
                }
                else if (value === 180) {
                  return 'nan';
                }
                else if (value === 225) {
                  return 'Southwest';
                }
                else if (value === 270) {
                  return '西';
                }
                else if (value === 315) {
                  return 'Northwest';
                }
              }
            },
            data: [
              {
                value: this.beamDirection,
                // name: 'Beam direction',
                detail: {
                  show: false,
                }
              },
            ],
            markPoint: {
              symbol: 'image://data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAdoAAAHaBAMAAABVypWcAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAnUExURUdwTI + gqXyNlWV3f5ugowEBPrbGzMDP1qGzuo3m + 0FFTysuPsXy + 7J M0psAAAAFdFJOUwD + /f13dr38yQAAIABJREFUeNrsXL1uWzkWHjh6ATKBl + VcKsAaW + 1IqVxlEiPIa2QwIFlssw2vCjc0AorFPsQA7jxvsA8wbvxQe35IXt6r61RbUIA4tiUnGUOfvnO + 80v/9NPlXM 7lXM7lXM7lXM7lXM7lXM7lXM7l/F/PZnPGL/4OjoDz7t3dK + fdr/B59ys + eyfofP9 + d55E3RkfEECSenYG + E8O8ETiX0hNT + EzCQUfxtx9PEOwX4wdg0rGuQe93dez3W53e/iAL/Q9Pm7hqxbRGBPE6I35eIZgE7x4ZQGDC3q/ejJihKtVNN6PThgXzw7u5qszZvQpjqO3ownihycoqUY6PiC3xp0X3 K8umfHlGXgaR2sQQDnW2vKITzwchGcz2nT/Mhpnfj8nuBuwYvvy8hySSXiccybCcYzY4fduegfgaTQpRmN9gv9thD/5fkZgo0sjgHXqNRtW69 + CpgG5L + PheEa2/MXF8f7lGXgtKFQISgQ89JCUSo sDf4b / MCZ8n0a hMskCOfCyw4CqA9xWuIA0wyboM7QgxAlDM8ANR3i30lmQ + 8U4cLwDUgtJL3xR0czjLQRa5HL0C0tOmIw4tIdriNUm/n4GaB1SexDRBREhUVDZb9eOb00aLDlg6vVNRB + O9y/exf7J/eIMvNKgoP65xs Rhya0vZ8mudyDHfrwHhzcGXBcSse/n4LWYVkQnFXinB6UCbpu8CdzVsjWjUY + 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              symbolSize: 100,
              symbolRotate: this.carDirection, //car rotation
              data: [
                //Correspond to the center position of your dashboard. The color can be the same as the background color of the drawing board.
                { value: '', x: 'center', y: 'center', itemStyle: { color: '#90CBFB' } }
              ],
              itemStyle: {
                normal: {
                  label: {
                    show: true,
                    color: '#FFF',//The font color in the bubble
                    fontSize: 60
                  }
                }
              },
            },
          },
        ]
      };
      myChart.setOption(option)