G2-mobile - 仪表盘

   <!DOCTYPE html>
    <html>
      <head>
        <meta charset="utf-8">
        <title>仪表盘</title>
<script src="https://a.alipayobjects.com/g/datavis/g2-mobile-all/2.1.22/index.js"></script>
      </head>
      <body>
          <div style="width:416px;height:218px;margin:0 auto">
              <canvas id="c1" style="width:416px;height:218px;"></canvas>
          </div>
 <script>

GM.Global.pixelRatio = 2;//双精度
var Shape = GM.Shape;
var G = GM.G;
var data = [{pointer: '当前收益',value: 5, length:2,y:1.05}];
//自定义绘制数据的的形状
Shape.registShape('point', 'dashBoard', {
  getShapePoints:function(cfg){
    var x = cfg.x;
    var y = cfg.y;

    return [
      {x: x, y: y},
      {x: x, y: 0.5}
    ]
  },
  drawShape: function(cfg, canvas){
    var point1 = cfg.points[0];
    var point2 = cfg.points[1];
    point1 = this.parsePoint(point1);
    point2 = this.parsePoint(point2);

    G.drawLines([point1, point2], canvas, {
      stroke: '#18b7d6',
      lineWidth: 2
    });

    var text = cfg.origin._origin.value.toString();
        G.drawText(text+'%', cfg.center, canvas, {
            fillStyle: '#f75b5b',
            font:'30px Arial',
            textAlign: 'center',
            textBaseline: 'bottom'
        });

        G.drawText(cfg.origin._origin.pointer, cfg.center, canvas, {
            fillStyle: '#ccc',
            textAlign: 'center',
            textBaseline: 'top'
        });
  }
});

var chart = new GM.Chart({
    id : 'c1'
});
chart.source(data, {
    'value': {type: 'linear',min: 0,max: 15,tickCount: 6},
    'length': {type: 'linear',min: 0,max: 10},
    y: {type: 'linear',min: 0, max: 1}
});

chart.coord('polar',{
    inner: 0,
    startAngle: -1.25 * Math.PI,
    endAngle: 0.25 * Math.PI
});

//配置value轴刻度线
chart.axis('value', {
    tickLine: {
        strokeStyle: '#b9e6ef',
        lineWidth: 2,
        value: -5
    },
    label: null,
    grid: null,
    line: null
});

chart.axis('y', false);

//绘制仪表盘辅助元素
chart.guide().arc([0,1.05],[4.8,1.05],{
    strokeStyle: '#18b7d6',
    lineWidth:5,
    lineCap: 'round'
});
chart.guide().arc([5.2,1.05],[9.8,1.05],{
    strokeStyle: '#ccc',
    lineWidth:5,
    lineCap: 'round'
});
chart.guide().arc([10.2,1.05],[15,1.05],{
    strokeStyle: '#ccc',
    lineWidth:5,
    lineCap: 'round'
});
chart.guide().arc([0,1.2],[15,1.2],{
    strokeStyle: '#ccc',
    lineWidth:1
});

chart.guide().text([-0.5,1.3], '0.00%', {
    fillStyle: '#ccc',
    font:'18px Arial',
    textAlign: 'center'
});
chart.guide().text([7.5,0.7], '7.50%', {
    fillStyle: '#ccc',
    font:'18px Arial',
    textAlign: 'center'
});
chart.guide().text([15.5,1.3], '15.00%', {
    fillStyle: '#ccc',
    font:'18px Arial',
    textAlign: 'center'
});

chart.point().position('value*y').size('length').color('#18b7d6').shape('dashBoard');
chart.render();

</script>

      </body>
    </html>
          
仪表盘
仪表盘(Gauge)是一种拟物化的图表，刻度表示度量，指针表示维度，指针角度表示数值。了解更多