# 散点图

## 示例

<iframe width="100%" height="470" src="//jsfiddle.net/vecharts/1hL7y492/embedded/result,html,js/?bodyColor=fff" allowfullscreen="allowfullscreen" frameborder="0"></iframe>

## 基础散点图

<vuep template="#basicScatter" :options="{ theme: 'vue', lineNumbers: false }"></vuep>

<script v-pre type="text/x-template" id="basicScatter">
<template>
  <ve-scatter-chart :data="chartData" />
</template>

<script>
  module.exports = {
    methods: {
      // 根据指定范围生成随机数
      rangeRandom(min, max, precision) {
        return (Math.random() * (max - min) + min).toFixed(precision)
      }
    },
    created () {
      const randomData = []

      for (let i = 0; i < 50; i++) {
        randomData.push([this.rangeRandom(20, 200, 2), this.rangeRandom(10, 100, 2)])
      }
      this.chartData = {
        dimensions: {
          data: ['随机值']
        },
        measures: [{
          name: '随机分布数据',
          data: randomData
        }]
      }
    }
  }
</script>

## 分组散点图

<vuep template="#groupScatter" :options="{ theme: 'vue', lineNumbers: false }"></vuep>

<script v-pre type="text/x-template" id="groupScatter">
<template>
  <ve-scatter-chart
    :data="chartData"
    :settings="chartSettings"
    :tooltip="tooltip"
  />
</template>

<script>
  module.exports = {
    created () {
      this.chartData = {
        dimensions: {
          data: ['身高', '体重']
        },
        measures: [{
          name: '女性',
          data: [
            [161.2, 51.6], [167.5, 59.0], [159.5, 49.2], [157.0, 63.0], [155.8, 53.6],
            [170.0, 59.0], [159.1, 47.6], [166.0, 69.8], [176.2, 66.8], [160.2, 75.2],
            [172.5, 55.2], [170.9, 54.2], [172.9, 62.5], [153.4, 42.0], [160.0, 50.0],
            [147.2, 49.8], [168.2, 49.2], [175.0, 73.2], [157.0, 47.8], [167.6, 68.8],
            [159.5, 50.6], [175.0, 82.5], [166.8, 57.2], [176.5, 87.8], [170.2, 72.8],
            [174.0, 54.5], [173.0, 59.8], [179.9, 67.3], [170.5, 67.8], [160.0, 47.0],
            [154.4, 46.2], [162.0, 55.0], [176.5, 83.0], [160.0, 54.4], [152.0, 45.8],
            [162.1, 53.6], [170.0, 73.2], [160.2, 52.1], [161.3, 67.9], [166.4, 56.6],
            [168.9, 62.3], [163.8, 58.5], [167.6, 54.5], [160.0, 50.2], [161.3, 60.3],
            [167.6, 58.3], [165.1, 56.2], [160.0, 50.2], [170.0, 72.9], [157.5, 59.8],
            [167.6, 61.0], [160.7, 69.1], [163.2, 55.9], [152.4, 46.5], [157.5, 54.3],
            [168.3, 54.8], [180.3, 60.7], [165.5, 60.0], [165.0, 62.0], [164.5, 60.3],
            [156.0, 52.7], [160.0, 74.3], [163.0, 62.0], [165.7, 73.1], [161.0, 80.0],
            [162.0, 54.7], [166.0, 53.2], [174.0, 75.7], [172.7, 61.1], [167.6, 55.7],
            [151.1, 48.7], [164.5, 52.3], [163.5, 50.0], [152.0, 59.3], [169.0, 62.5],
            [164.0, 55.7], [161.2, 54.8], [155.0, 45.9], [170.0, 70.6], [176.2, 67.2],
            [170.0, 69.4], [162.5, 58.2], [170.3, 64.8], [164.1, 71.6], [169.5, 52.8],
            [163.2, 59.8], [154.5, 49.0], [159.8, 50.0], [173.2, 69.2], [170.0, 55.9],
            [161.4, 63.4], [169.0, 58.2], [166.2, 58.6], [159.4, 45.7], [162.5, 52.2],
            [159.0, 48.6], [162.8, 57.8], [159.0, 55.6], [179.8, 66.8], [162.9, 59.4],
            [161.0, 53.6], [151.1, 73.2], [168.2, 53.4], [168.9, 69.0], [173.2, 58.4],
            [171.8, 56.2], [178.0, 70.6], [164.3, 59.8], [163.0, 72.0], [168.5, 65.2],
            [166.8, 56.6], [172.7, 105.2], [163.5, 51.8], [169.4, 63.4], [167.8, 59.0],
            [159.5, 47.6], [167.6, 63.0], [161.2, 55.2], [160.0, 45.0], [163.2, 54.0],
            [162.2, 50.2], [161.3, 60.2], [149.5, 44.8], [157.5, 58.8], [163.2, 56.4],
            [172.7, 62.0], [155.0, 49.2], [156.5, 67.2], [164.0, 53.8], [160.9, 54.4],
            [162.8, 58.0], [167.0, 59.8], [160.0, 54.8], [160.0, 43.2], [168.9, 60.5],
            [158.2, 46.4], [156.0, 64.4], [160.0, 48.8], [167.1, 62.2], [158.0, 55.5],
            [167.6, 57.8], [156.0, 54.6], [162.1, 59.2], [173.4, 52.7], [159.8, 53.2],
            [170.5, 64.5], [159.2, 51.8], [157.5, 56.0], [161.3, 63.6], [162.6, 63.2],
            [160.0, 59.5], [168.9, 56.8], [165.1, 64.1], [162.6, 50.0], [165.1, 72.3],
            [166.4, 55.0], [160.0, 55.9], [152.4, 60.4], [170.2, 69.1], [162.6, 84.5],
            [170.2, 55.9], [158.8, 55.5], [172.7, 69.5], [167.6, 76.4], [162.6, 61.4],
            [167.6, 65.9], [156.2, 58.6], [175.2, 66.8], [172.1, 56.6], [162.6, 58.6],
            [160.0, 55.9], [165.1, 59.1], [182.9, 81.8], [166.4, 70.7], [165.1, 56.8],
            [177.8, 60.0], [165.1, 58.2], [175.3, 72.7], [154.9, 54.1], [158.8, 49.1],
            [172.7, 75.9], [168.9, 55.0], [161.3, 57.3], [167.6, 55.0], [165.1, 65.5],
            [175.3, 65.5], [157.5, 48.6], [163.8, 58.6], [167.6, 63.6], [165.1, 55.2],
            [165.1, 62.7], [168.9, 56.6], [162.6, 53.9], [164.5, 63.2], [176.5, 73.6],
            [168.9, 62.0], [175.3, 63.6], [159.4, 53.2], [160.0, 53.4], [170.2, 55.0],
            [162.6, 70.5], [167.6, 54.5], [162.6, 54.5], [160.7, 55.9], [160.0, 59.0],
            [157.5, 63.6], [162.6, 54.5], [152.4, 47.3], [170.2, 67.7], [165.1, 80.9],
            [172.7, 70.5], [165.1, 60.9], [170.2, 63.6], [170.2, 54.5], [170.2, 59.1],
            [161.3, 70.5], [167.6, 52.7], [167.6, 62.7], [165.1, 86.3], [162.6, 66.4],
            [152.4, 67.3], [168.9, 63.0], [170.2, 73.6], [175.2, 62.3], [175.2, 57.7],
            [160.0, 55.4], [165.1, 104.1], [174.0, 55.5], [170.2, 77.3], [160.0, 80.5],
            [167.6, 64.5], [167.6, 72.3], [167.6, 61.4], [154.9, 58.2], [162.6, 81.8],
            [175.3, 63.6], [171.4, 53.4], [157.5, 54.5], [165.1, 53.6], [160.0, 60.0],
            [174.0, 73.6], [162.6, 61.4], [174.0, 55.5], [162.6, 63.6], [161.3, 60.9],
            [156.2, 60.0], [149.9, 46.8], [169.5, 57.3], [160.0, 64.1], [175.3, 63.6],
            [169.5, 67.3], [160.0, 75.5], [172.7, 68.2], [162.6, 61.4], [157.5, 76.8],
            [176.5, 71.8], [164.4, 55.5], [160.7, 48.6], [174.0, 66.4], [163.8, 67.3]
          ]
        }, {
          name: '男性',
          data: [
            [174.0, 65.6], [175.3, 71.8], [193.5, 80.7], [186.5, 72.6], [187.2, 78.8],
            [181.5, 74.8], [184.0, 86.4], [184.5, 78.4], [175.0, 62.0], [184.0, 81.6],
            [180.0, 76.6], [177.8, 83.6], [192.0, 90.0], [176.0, 74.6], [174.0, 71.0],
            [184.0, 79.6], [192.7, 93.8], [171.5, 70.0], [173.0, 72.4], [176.0, 85.9],
            [176.0, 78.8], [180.5, 77.8], [172.7, 66.2], [176.0, 86.4], [173.5, 81.8],
            [178.0, 89.6], [180.3, 82.8], [180.3, 76.4], [164.5, 63.2], [173.0, 60.9],
            [183.5, 74.8], [175.5, 70.0], [188.0, 72.4], [189.2, 84.1], [172.8, 69.1],
            [170.0, 59.5], [182.0, 67.2], [170.0, 61.3], [177.8, 68.6], [184.2, 80.1],
            [186.7, 87.8], [171.4, 84.7], [172.7, 73.4], [175.3, 72.1], [180.3, 82.6],
            [182.9, 88.7], [188.0, 84.1], [177.2, 94.1], [172.1, 74.9], [167.0, 59.1],
            [169.5, 75.6], [174.0, 86.2], [172.7, 75.3], [182.2, 87.1], [164.1, 55.2],
            [163.0, 57.0], [171.5, 61.4], [184.2, 76.8], [174.0, 86.8], [174.0, 72.2],
            [177.0, 71.6], [186.0, 84.8], [167.0, 68.2], [171.8, 66.1], [182.0, 72.0],
            [167.0, 64.6], [177.8, 74.8], [164.5, 70.0], [192.0, 101.6], [175.5, 63.2],
            [171.2, 79.1], [181.6, 78.9], [167.4, 67.7], [181.1, 66.0], [177.0, 68.2],
            [174.5, 63.9], [177.5, 72.0], [170.5, 56.8], [182.4, 74.5], [197.1, 90.9],
            [180.1, 93.0], [175.5, 80.9], [180.6, 72.7], [184.4, 68.0], [175.5, 70.9],
            [180.6, 72.5], [177.0, 72.5], [177.1, 83.4], [181.6, 75.5], [176.5, 73.0],
            [175.0, 70.2], [174.0, 73.4], [165.1, 70.5], [177.0, 68.9], [192.0, 102.3],
            [176.5, 68.4], [169.4, 65.9], [182.1, 75.7], [179.8, 84.5], [175.3, 87.7],
            [184.9, 86.4], [177.3, 73.2], [167.4, 53.9], [178.1, 72.0], [168.9, 55.5],
            [157.2, 58.4], [180.3, 83.2], [170.2, 72.7], [177.8, 64.1], [172.7, 72.3],
            [165.1, 65.0], [186.7, 86.4], [165.1, 65.0], [174.0, 88.6], [175.3, 84.1],
            [185.4, 66.8], [177.8, 75.5], [180.3, 93.2], [180.3, 82.7], [177.8, 58.0],
            [177.8, 79.5], [177.8, 78.6], [177.8, 71.8], [177.8, 116.4], [163.8, 72.2],
            [188.0, 83.6], [198.1, 85.5], [175.3, 90.9], [166.4, 85.9], [190.5, 89.1],
            [166.4, 75.0], [177.8, 77.7], [179.7, 86.4], [172.7, 90.9], [190.5, 73.6],
            [185.4, 76.4], [168.9, 69.1], [167.6, 84.5], [175.3, 64.5], [170.2, 69.1],
            [190.5, 108.6], [177.8, 86.4], [190.5, 80.9], [177.8, 87.7], [184.2, 94.5],
            [176.5, 80.2], [177.8, 72.0], [180.3, 71.4], [171.4, 72.7], [172.7, 84.1],
            [172.7, 76.8], [177.8, 63.6], [177.8, 80.9], [182.9, 80.9], [170.2, 85.5],
            [167.6, 68.6], [175.3, 67.7], [165.1, 66.4], [185.4, 102.3], [181.6, 70.5],
            [172.7, 95.9], [190.5, 84.1], [179.1, 87.3], [175.3, 71.8], [170.2, 65.9],
            [193.0, 95.9], [171.4, 91.4], [177.8, 81.8], [177.8, 96.8], [167.6, 69.1],
            [167.6, 82.7], [180.3, 75.5], [182.9, 79.5], [176.5, 73.6], [186.7, 91.8],
            [188.0, 84.1], [188.0, 85.9], [177.8, 81.8], [174.0, 82.5], [177.8, 80.5],
            [171.4, 70.0], [185.4, 81.8], [185.4, 84.1], [188.0, 90.5], [188.0, 91.4],
            [182.9, 89.1], [176.5, 85.0], [175.3, 69.1], [175.3, 73.6], [188.0, 80.5],
            [188.0, 82.7], [175.3, 86.4], [170.5, 67.7], [179.1, 92.7], [177.8, 93.6],
            [175.3, 70.9], [182.9, 75.0], [170.8, 93.2], [188.0, 93.2], [180.3, 77.7],
            [177.8, 61.4], [185.4, 94.1], [168.9, 75.0], [185.4, 83.6], [180.3, 85.5],
            [174.0, 73.9], [167.6, 66.8], [182.9, 87.3], [160.0, 72.3], [180.3, 88.6],
            [167.6, 75.5], [186.7, 101.4], [175.3, 91.1], [175.3, 67.3], [175.9, 77.7],
            [175.3, 81.8], [179.1, 75.5], [181.6, 84.5], [177.8, 76.6], [182.9, 85.0],
            [177.8, 102.5], [184.2, 77.3], [179.1, 71.8], [176.5, 87.9], [188.0, 94.3],
            [174.0, 70.9], [167.6, 64.5], [170.2, 77.3], [167.6, 72.3], [188.0, 87.3],
            [174.0, 80.0], [176.5, 82.3], [180.3, 73.6], [167.6, 74.1], [188.0, 85.9],
            [180.3, 73.2], [167.6, 76.3], [183.0, 65.9], [183.0, 90.9], [179.1, 89.1],
            [170.2, 62.3], [177.8, 82.7], [179.1, 79.1], [190.5, 98.2], [177.8, 84.1],
            [180.3, 83.2], [180.3, 83.2]
          ]
        }]
      }
      this.chartSettings = {
        xAxisScale: true,
        yAxisScale: true
      }
      this.tooltip = {
        axisPointer: {
          type: 'cross'
        }
      }
    }
  }
</script>

## 象限散点图

<vuep template="#basicScatterQuery" :options="{ theme: 'vue', lineNumbers: false }"></vuep>

<script v-pre type="text/x-template" id="basicScatterQuery">
<template>
  <ve-scatter-chart :data="chartData" :xAxis="xAxis" :yAxis="yAxis" :series="series" />
</template>

<script>
  module.exports = {
    created() {
      this.chartData = {
        dimensions: {
          data: []
        },
        measures: [{
          name: '',
          data: []
        }]
      }
      this.xAxis = {
        splitLine: {
          show: false
        },
        axisLabel: {
          formatter: function(value, index) {
            return value * 100 + '%';
          }
        }
      }
      this.yAxis = {
        axisLabel: {
          formatter: function(value, index) {
            return value * 100 + '%';
          }
        }
      }
      this.series = [{
        symbolSize: 10,
        data: [{
            value: [1, 1],
            symbol: 'none',
          }, {
            value: [0, -1],
            symbol: 'none',
          },
          [0.35, 0.18],
          [0.55, 0.77],
          [0.88, 0.23],
          [0.23, -0.25],
          [0.65, -0.66]
        ],
        type: 'scatter',
        markArea: {
          itemStyle: {
            color: '#FFFAFA',
            opacity: '0.7'
          },
          emphasis: {
            itemStyle: {
              color: '#FFFAFA',
              opacity: '0.7'
            },
          },
          data: [
            [{
              coord: [0.5, 0]
            }, {
              coord: [1, 1]
            }],
            [{
              coord: [0.5, 0]
            }, {
              coord: [0, -1]
            }]
          ]
        },
        markLine: {
          symbol: 'none',
          data: [
            [{
              value: 0.5,
              coord: [0.5, -1]
            }, {
              coord: [0.5, 1]
            }]
          ]
        }
      }]
    }
  }
</script>

## 气泡图

> 气泡图是散点图的变体，`itemStyle` 配合 `symbolSize` 配置项，可以配置出气泡图风格。

<vuep template="#bubbleScatter" :options="{ theme: 'vue', lineNumbers: false }"></vuep>

<script v-pre type="text/x-template" id="bubbleScatter">
<template>
  <ve-scatter-chart :data="chartData" :settings="chartSettings" />
</template>

<script>
  module.exports = {
    methods: {
      // 根据指定范围生成随机数
      rangeRandom(min, max, precision) {
        return (Math.random() * (max - min) + min).toFixed(precision)
      }
    },
    created () {
      const randomData = []

      for (let i = 0; i < 50; i++) {
        randomData.push([this.rangeRandom(20, 200, 2), this.rangeRandom(10, 100, 2)])
      }
      this.chartData = {
        dimensions: {
          data: ['随机值']
        },
        measures: [{
          name: '随机分布数据',
          data: randomData
        }]
      }
      this.chartSettings = {
        itemStyle: {
          normal: {
            opacity: 0.8
          }
        },
        symbolSize: function(val) {
          const [a, b] = val
          return Math.abs(a - b) / 2
        }
      }
    }
  }
</script>

## settings 配置项

| 配置项 | 简介 | 类型 | 用法 |
| --- | --- | --- | --- |
| dimensions | 维度在散点图中的应用为设置**X-Y轴**分别代表的维度名称，默认数组中第一个值映射**X**轴；数组中第二个值映射**Y**轴 | Array | `['身高', '体重']` |
| measures | 度量在散点图中的应用为设置**X-Y轴**维度所对应的数据，默认数组中第一个值映射**X**轴；数组中第二个值映射**Y**轴 | Array | required |
| itemStyle | 图形样式 | Object | 参见[文档](http://echarts.baidu.com/option.html#series-scatter.itemStyle) |
| symbolSize | 图形标记的大小 | [number, Array, Function] | 参见[文档](http://echarts.baidu.com/option.html#series-scatter.symbolSize) |

> Tip: