1. ECharts
1 Introduction
ECharts is a project of Baidu. Later, Baidu donated Echart to apache for chart display, providing conventional line charts , histograms , scatter charts , pie charts , candlestick charts , and box charts for statistics . Maps , heat maps , and line graphs for geographic data visualization , relationship graphs , treemaps , and sunburst graphs for relational data visualization, parallel coordinates for multidimensional data visualization , and funnel graphs for BI , dashboards , and support graphs and graphs mashup between.
Official Website: Quick Start - Handbook - Apache ECharts
2. Basic use
Getting Started Reference: Official Website -> Documentation -> Tutorial -> 5 minutes to get started with ECharts
(1) Create an html page: column chart.html
(2) Introduce ECharts
<!-- 引入 ECharts 文件 -->
<script src="echarts.min.js"></script>
(3) Define the chart area
<!-- 为ECharts准备一个具备大小（宽高）的Dom -->
<div id="main" style="width: 600px;height:400px;"></div>
(4) Histogram
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
// 指定图表的配置项和数据
var option = {
title: {
text: 'ECharts 入门示例'
},
tooltip: {},
legend: {
data:['销量']
},
xAxis: {
data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
},
yAxis: {},
series: [{
name: '销量',
type: 'bar',
data: [5, 20, 36, 10, 10, 20]
}]
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
</script>
(5) Line chart
<script>
var myChart = echarts.init(document.getElementById('main'));
var option = {
//x轴是类目轴（离散数据）,必须通过data设置类目数据
xAxis: {
type: 'category',
data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
},
//y轴是数据轴（连续数据）
yAxis: {
type: 'value'
},
//系列列表。每个系列通过 type 决定自己的图表类型
series: [{
//系列中的数据内容数组
data: [820, 932, 901, 934, 1290, 1330, 1320],
//折线图
type: 'line'
}]
};
myChart.setOption(option);
</script>
2. Integrate Echarts in the project
1. Install Echarts
npm install --save [email protected]
2. Examples
<template>
<div class="app-container">
<!--表单-->
<el-form :inline="true" class="demo-form-inline">
<el-form-item>
<el-select v-model="searchObj.type" clearable placeholder="请选择">
<el-option label="学员登录数统计" value="login_num"/>
<el-option label="学员注册数统计" value="register_num"/>
<el-option label="课程播放数统计" value="video_view_num"/>
<el-option label="每日课程数统计" value="course_num"/>
</el-select>
</el-form-item>
<el-form-item>
<el-date-picker
v-model="searchObj.begin"
type="date"
placeholder="选择开始日期"
value-format="yyyy-MM-dd" />
</el-form-item>
<el-form-item>
<el-date-picker
v-model="searchObj.end"
type="date"
placeholder="选择截止日期"
value-format="yyyy-MM-dd" />
</el-form-item>
<el-button
:disabled="btnDisabled"
type="primary"
icon="el-icon-search"
@click="showChart()">查询</el-button>
</el-form>
<div class="chart-container">
<div id="chart" class="chart" style="height:500px;width:100%" />
</div>
</div>
</template>
<script>
import echarts from 'echarts'
import daily from'../../api/sta'
export default {
name: "show",
data() {
return {
searchObj: {
type: '',
begin: '',
end: ''
},
btnDisabled: false,
chart: null,
title: '',
xData: [],
yData: []
}
},
methods: {
showChart() {
this.initChartData();
this.setChart()
},
// 准备图表数据
initChartData() {
daily.showChart(this.searchObj).then(response => {
// 数据
this.yData = response.data.dataList;
// 横轴时间
this.xData = response.data.dateList;
// 当前统计类别
switch (this.searchObj.type) {
case 'register_num':
this.title = '学员注册数统计';
break;
case 'login_num':
this.title = '学员登录数统计';
break;
case 'video_view_num':
this.title = '课程播放数统计';
break;
case 'course_num':
this.title = '每日课程数统计';
break
}
this.setChart()
})
},
// 设置图标参数
setChart() {
// 基于准备好的dom，初始化echarts实例
this.chart = echarts.init(document.getElementById('chart'));
// console.log(this.chart)
// 指定图表的配置项和数据
var option = {
// x轴是类目轴（离散数据）,必须通过data设置类目数据（xData里面放的是时间）
xAxis: {
type: 'category',
data: this.xData,
},
// y轴是数据轴（连续数据）
yAxis: {
type: 'value'
},
// 系列列表。每个系列通过 type 决定自己的图表类型(y轴的数据)
series: [{
//
data: this.yData,
// 折线图
type: 'line'
}],
//显示标题
title: {
text: this.title
},
//x轴触发提示
tooltip: {
trigger: 'axis'
},
dataZoom: [{
show: true,
height: 30,
xAxisIndex: [
0
],
bottom: 30,
start: 10,
end: 80,
handleIcon: 'path://M306.1,413c0,2.2-1.8,4-4,4h-59.8c-2.2,0-4-1.8-4-4V200.8c0-2.2,1.8-4,4-4h59.8c2.2,0,4,1.8,4,4V413z',
handleSize: '110%',
handleStyle: {
color: '#d3dee5'
},
textStyle: {
color: '#fff'
},
borderColor: '#90979c'
},
{
type: 'inside',
show: true,
height: 15,
start: 1,
end: 35
}]
};
this.chart.setOption(option)
}
}
}
</script>
<style scoped>
</style>