index.vue
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<template>
<div class="chart-container app-container nohead">
<div id="chart" style="height:530px;margin-top:30px;"></div>
</div>
</template>
<script>
import echarts from 'echarts'
import ecStat from 'echarts-stat'
import resize from '../mixins/resize'
export default {
name: 'extend-graphDemo-echartsScatter',
mixins: [resize],
data() {
return {
chart: null,
}
},
mounted() {
this.initChart()
},
beforeDestroy() {
if (!this.chart) {
return
}
this.chart.dispose()
this.chart = null
},
methods: {
initChart() {
this.chart = echarts.init(document.getElementById('chart'))
var data = [
[20, 60],
[5, 11],
[4, 19],
[20, 80],
[45, 90],
[22, 34],
[56, 78],
[34, 66],
[45, 90],
[60, 89],
[65, 120],
[43, 87],
[34, 65],
[34, 45],
[53, 87],
[21, 39],
[32, 76],
[12, 54],
[28, 73],
[38, 87],
[23, 24],
[34, 65],
[45, 43],
[78, 100],
[68, 72],
[38, 70],
[43, 72],
[60, 93],
[28, 58],
[28, 54],
[65, 98],
[45, 80],
[12, 30],
[60, 94],
[43, 63],
[68, 102],
[44, 89],
[20, 48.32],
[12, 38.78],
[45, 78.49],
[46.34, 88.49],
[36.34, 65.49],
[23.34, 43.34],
[54.34, 98.34],
[68.34, 106.49],
[56.32, 91.34],
[5.34, 31.49],
[43.34, 74.34],
[43.34, 76.49],
[60.34, 99.49],
[32.34, 65.49],
[23.34, 54.79],
[17.34, 43.49],
[19.34, 45.49],
[56.34, 88.49],
[26.34, 65.49],
[27.34, 85.49],
[64.34, 110.49],
[22, 45]
];
var myRegression = ecStat.regression('linear', data);
myRegression.points.sort(function (a, b) {
return a[0] - b[0];
});
var option = {
title: {
text: '汽车速度与刹车距离',
left: 'center'
},
tooltip: {
trigger: 'axis',
axisPointer: {
type: 'cross'
}
},
xAxis: {
type: 'value',
name: '汽车速度',
splitLine: {
lineStyle: {
type: 'dashed'
}
},
},
yAxis: {
type: 'value',
name: '刹车距离',
min: 1.5,
splitLine: {
lineStyle: {
type: 'dashed'
}
},
},
series: [{
name: 'scatter',
type: 'scatter',
label: {
emphasis: {
show: true,
position: 'left',
textStyle: {
color: 'blue',
fontSize: 16
}
}
},
data: data
}, {
name: 'line',
type: 'line',
showSymbol: false,
data: myRegression.points,
markPoint: {
itemStyle: {
normal: {
color: 'transparent'
}
},
label: {
normal: {
show: true,
position: 'left',
formatter: myRegression.expression,
textStyle: {
color: '#333',
fontSize: 14
}
}
},
data: [{
coord: myRegression.points[myRegression.points.length - 1]
}]
}
}]
};
this.chart.setOption(option)
}
}
}
</script>