echarts散点图，缩放

最新推荐文章于 2025-04-25 10:46:05 发布

qq_39161501

最新推荐文章于 2025-04-25 10:46:05 发布

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文章标签： javascript 前端 angular.js

本文链接：https://blog.youkuaiyun.com/qq_39161501/article/details/135405171

版权

文章详细描述了如何在ECharts中使用dataZoom功能来实现散点图的水平和垂直缩放，展示了1990年和2015年不同国家的生活期望值与GDP的数据对比。

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散点图，缩放代码

 dataZoom: [//加上dataZoom可实现缩放
                {
                    type: 'slider',//x轴
                    xAxisIndex: 0,
                   
                },
                {
                    type: 'inside',//x轴
                id:'3', 
                    xAxisIndex: 0,
                    zoomOnMouseWheel:true,//如何触发缩放。可选值为：true：表示不按任何功能键，鼠标滚轮能触发缩放。false：表示鼠标滚轮不能触发缩放。'shift'：表示按住 shift 和鼠标滚轮能触发缩放。'ctrl'：表示按住 ctrl 和鼠标滚轮能触发缩放。'alt'：表示按住 alt 和鼠标滚轮能触发缩放。
                },
                // {
                //     type: 'slider',//y轴
                //     yAxisIndex: 0,
                // },
                // {
                //     type: 'inside',//y轴
                //     yAxisIndex: 0,
                // }
            ],

const data = [
  [
    [28604, 77, 17096869, 'Australia', 1990],
    [31163, 77.4, 27662440, 'Canada', 1990],
    [1516, 68, 1154605773, 'China', 1990],
    [13670, 74.7, 10582082, 'Cuba', 1990],
    [28599, 75, 4986705, 'Finland', 1990],
    [29476, 77.1, 56943299, 'France', 1990],
    [31476, 75.4, 78958237, 'Germany', 1990],
    [28666, 78.1, 254830, 'Iceland', 1990],
    [1777, 57.7, 870601776, 'India', 1990],
    [29550, 79.1, 122249285, 'Japan', 1990],
    [2076, 67.9, 20194354, 'North Korea', 1990],
    [12087, 72, 42972254, 'South Korea', 1990],
    [24021, 75.4, 3397534, 'New Zealand', 1990],
    [43296, 76.8, 4240375, 'Norway', 1990],
    [10088, 70.8, 38195258, 'Poland', 1990],
    [19349, 69.6, 147568552, 'Russia', 1990],
    [10670, 67.3, 53994605, 'Turkey', 1990],
    [26424, 75.7, 57110117, 'United Kingdom', 1990],
    [37062, 75.4, 252847810, 'United States', 1990]
  ],
  [
    [44056, 81.8, 23968973, 'Australia', 2015],
    [43294, 81.7, 35939927, 'Canada', 2015],
    [13334, 76.9, 1376048943, 'China', 2015],
    [21291, 78.5, 11389562, 'Cuba', 2015],
    [38923, 80.8, 5503457, 'Finland', 2015],
    [37599, 81.9, 64395345, 'France', 2015],
    [44053, 81.1, 80688545, 'Germany', 2015],
    [42182, 82.8, 329425, 'Iceland', 2015],
    [5903, 66.8, 1311050527, 'India', 2015],
    [36162, 83.5, 126573481, 'Japan', 2015],
    [1390, 71.4, 25155317, 'North Korea', 2015],
    [34644, 80.7, 50293439, 'South Korea', 2015],
    [34186, 80.6, 4528526, 'New Zealand', 2015],
    [64304, 81.6, 5210967, 'Norway', 2015],
    [24787, 77.3, 38611794, 'Poland', 2015],
    [23038, 73.13, 143456918, 'Russia', 2015],
    [19360, 76.5, 78665830, 'Turkey', 2015],
    [38225, 81.4, 64715810, 'United Kingdom', 2015],
    [53354, 79.1, 321773631, 'United States', 2015]
  ]
];
option = {
  backgroundColor: new echarts.graphic.RadialGradient(0.3, 0.3, 0.8, [
    {
      offset: 0,
      color: '#f7f8fa'
    },
    {
      offset: 1,
      color: '#cdd0d5'
    }
  ]),
  title: {
    text: 'Life Expectancy and GDP by Country',
    left: '5%',
    top: '3%'
  },
  legend: {
    right: '10%',
    top: '3%',
    data: ['1990', '2015']
  },
  grid: {
    left: '8%',
    top: '10%'
  },
  dataZoom: [//加上dataZoom可实现缩放
                {
                    type: 'slider',//x轴
                    xAxisIndex: 0,
                   
                },
                {
                    type: 'inside',//x轴
                id:'3', 
                    xAxisIndex: 0,
                    zoomOnMouseWheel:true,//如何触发缩放。可选值为：true：表示不按任何功能键，鼠标滚轮能触发缩放。false：表示鼠标滚轮不能触发缩放。'shift'：表示按住 shift 和鼠标滚轮能触发缩放。'ctrl'：表示按住 ctrl 和鼠标滚轮能触发缩放。'alt'：表示按住 alt 和鼠标滚轮能触发缩放。
                },
                // {
                //     type: 'slider',//y轴
                //     yAxisIndex: 0,
                // },
                // {
                //     type: 'inside',//y轴
                //     yAxisIndex: 0,
                // }
            ],
  xAxis: {
    splitLine: {
      lineStyle: {
        type: 'dashed'
      }
    },
    
    axisLabel: {
      formatter: function (v) {
        var item = '';
        if (v === 0) {
          item = '0';
        } else if (v == 80000) {
          item = '8000';
        } else if (v == 70000) {
          item = '6500';
        } else if (v == 60000) {
          item = '5000';
        } else if (v == 50000) {
          item = '3500';
        } else if (v == 40000) {
          item = '2000';
        } else if (v == 30000) {
          item = '1000';
        } else if (v == 20000) {
          item = '500';
        } else if (v == 10000) {
          item = '300';
        }
        return item;
      }
    },
  },
  yAxis: {
    splitLine: {
      lineStyle: {
        type: 'dashed'
      }
    },
    scale: true
  },
  series: [
    {
      name: '1990',
      data: data[0],
      type: 'scatter',
      symbolSize: function (data) {
        return Math.sqrt(data[2]) / 5e2;
      },
      emphasis: {
        focus: 'series',
        label: {
          show: true,
          formatter: function (param) {
            return param.data[3];
          },
          position: 'top'
        }
      },
      itemStyle: {
        shadowBlur: 10,
        shadowColor: 'rgba(120, 36, 50, 0.5)',
        shadowOffsetY: 5,
        color: new echarts.graphic.RadialGradient(0.4, 0.3, 1, [
          {
            offset: 0,
            color: 'rgb(251, 118, 123)'
          },
          {
            offset: 1,
            color: 'rgb(204, 46, 72)'
          }
        ])
      }
    },
    {
      name: '2015',
      data: data[1],
      type: 'scatter',
      symbolSize: function (data) {
        return Math.sqrt(data[2]) / 5e2;
      },
      emphasis: {
        focus: 'series',
        label: {
          show: true,
          formatter: function (param) {
            return param.data[3];
          },
          position: 'top'
        }
      },
      itemStyle: {
        shadowBlur: 10,
        shadowColor: 'rgba(25, 100, 150, 0.5)',
        shadowOffsetY: 5,
        color: new echarts.graphic.RadialGradient(0.4, 0.3, 1, [
          {
            offset: 0,
            color: 'rgb(129, 227, 238)'
          },
          {
            offset: 1,
            color: 'rgb(25, 183, 207)'
          }
        ])
      }
    }
  ]
};