vue使用echarts实现水平柱形图实例

网络编程 2024/12/27 佚名

3 2 1

文件结构：

testData.js文件

const dtuEdition = {
 name: '有方有线',
 number: 60,
 proportion: 40,
 edition: {
 '有方有线V1.0.0': 20,
 '有方有线V1.2.0': 15,
 '有方有线V2.0.1': 10,
 '有方有线V3.0.0': 8,
 '有方有线V3.2.0': 5,
 '有方有线V3.4.0': 4,
 '有方有线V4.0.0': 3,
 '有方有线V4.0.2': 2,
 '有方有线V4.0.3': 1
 }
} 
export default {
 namespaced: true, // 用于在全局引用此文件里的方法时标识这一个的文件名
 dtuEdition
}

dtuDistributionCurve.js文件

// DTU连接率bar图的option
let barOption = {
 grid: {
 // width: '85%', // 设置gird宽度
 left: 40, // gird距离容器左边距
 right: 65,
 top: 20,
 bottom: 0,
 containLabel: true
 },
 xAxis: {
 show : false, // 不显示横轴
 type: 'value',
 max: 1000, // 横轴最大值
 },
 yAxis: {
 type: 'category',
 data: [],
 axisLine: {
  show: false
 },
 axisTick: {
  show: false
 },
 splitLine: {
  show: false
 }
 },
 series: [{
 type: 'bar',
 stack: 'chart',
 z: 3,
 itemStyle: {
  normal: {
  color: '#a7c7e9'
  }
 },
 data: []
 }, {
 type: 'bar',
 stack: 'chart',
 silent: true,
 label: {
  normal: {
  formatter: (params) => {
   // console.log(params)
   return barOption.xAxis.max-params.value
  },
  color: '#666666',
  position: 'right',
  distance: 10,
  show: true
  }
 },
 itemStyle: {
  normal: {
  color: '#f3f3f6'
  }
 },
 barWidth : 10,//柱图宽度
 data: []
 }]
}
 
// 设置y轴标签
export function setYAxisData(edition) {
 let data = []
 for (let key in edition) {
 data.push(key)
 }
 barOption.yAxis.data = data.reverse()
 console.log(barOption.yAxis.data)
}
 
// 设置x轴最大值
export function setXAxisMax(number) {
 barOption.xAxis.max = number
}
 
// 设置series的data数据
export function setSeriesData(edition, number) {
 let data0 = []
 let data1 = []
 for(let key in edition) {
 data0.push(edition[key])
 data1.push(number - edition[key])
 }
 barOption.series[0].data = data0.reverse()
 barOption.series[1].data = data1.reverse()
}
 
export default {
 barOption,
 setYAxisData,
 setXAxisMax,
 setSeriesData
}

vue文件

<template>
 <div ref="dtuEdition" class="project-survey-dtu-edition"></div>
</template>
 
<script>
 import testData from '../constvalue/testData'
 import dtuDistributionOption from '../curveoption/dtuDistributionCurve'
 export default {
  name: 'ProjectSurvey',
  data() {
   return {
 dtuEditionChart: null
 }
  },
 
  methods: {
 // 点击DTU模块数量分布展示图的扇区item
 distributionChartClick(param) {
 console.log(param)
 let dtuEdition = testData.dtuEdition
 this.dtuName = dtuEdition.name
 this.dtuNumber = dtuEdition.number
 this.dtuProportion = dtuEdition.proportion + '%'
 dtuDistributionOption.setYAxisData(dtuEdition.edition)
 dtuDistributionOption.setXAxisMax(dtuEdition.number)
 dtuDistributionOption.setSeriesData(dtuEdition.edition, dtuEdition.number)
 this.dtuEditionChart.setOption(dtuDistributionOption.barOption)
 this.dtuEditionChart.resize()
 },
 // 点击tab的某页
 tabClick(tab, event) {
 console.log(this.activeName)
 if(this.activeName === 'first') { // 从后端获取连接率统计数据
 
 } else { // 从后端获取模块数量分布展示数据
  let distributionInfo = testData.dtuDistribution.distributionInfo
  this.deadline = testData.dtuDistribution.deadline
  dtuDistributionOption.setSectorValue(distributionInfo)
    dtuDistributionOption.setSectorName(testData.dtuDistribution.allDistribution)
  this.distributionChart.setOption(dtuDistributionOption.pieOption)
  this.distributionChart.resize()
  this.distributionChart.on('click', this.distributionChartClick)
 }
 }
 },
 mounted() {
 this.dtuEditionChart = this.$echarts.init(this.$refs.dtuEdition)
 this.distributionChart = this.$echarts.init(this.$refs.dtuDistribution)
 let maxV = this.getMaxV()
 let minV = this.getMinV()
 for(let item of this.connectionInfo) {
 this.charts[item.dtuName] = this.$echarts.init(document.getElementById(item.dtuName))
 let normalizationRatio = this.normalization(item.connectionRatio, maxV, minV)
 dtuConnectionOption.setSectorColor(normalizationRatio)
 dtuConnectionOption.setTitleText(item.dtuName)
 dtuConnectionOption.setSectorValue(item.connectionRatio)
 dtuConnectionOption.setSectorName(item.connectionRatio)
 // console.log(dtuConnectionOption.option)
 this.charts[item.dtuName].setOption(dtuConnectionOption.option)
 this.charts[item.dtuName].resize()
 }
 window.onresize = () => {
 this.distributionChart.resize()
 this.dtuEditionChart.resize()
  }
 },
 updated() {
 this.distributionChart.resize()
 for(let item of this.connectionInfo) {
 this.charts[item.dtuName].resize()
 }
 } 
 
 }
</script>
 
<style>
 .project-survey-dtu-edition {
 height: 580px;
 }
</style>

图表

补充知识：vue+echart实现 X轴双柱状图渐变色

一: 安装

1. 首先需要安装echarts依赖包

npm install echarts -S

2. 或者使用国内的淘宝镜像：

npm install -g cnpm --registry=https://registry.npm.taobao.org

二: 创建图表

全局引入

main.js

>```javascript
// 引入echarts
import echarts from 'echarts'
Vue.prototype.$echarts = echarts

Hello.vue

<div id="myChart" :style="{width: '300px', height: '300px'}"></div>

 export default {
 data(){
  return {}
 }, 
  mounted(){
  this.myChart() //函数调用
  },
  methods:{
  	myChart(){
	  let myChart= this.$echarts.init(document.getElementById('myChart'));
	  // var colors = ['rgba(15,115,255,0.6)', 'rgba(15,235,255,0.6)'];
	  var data1 = [350, 250, 170, 360, 240];
	  var data2 = [187, 146, 129, 174,245];
	  var xData = ['3.12','3.13','3.14','3.15','3.16']
	  rightBtns.setOption({
   // backgroundColor:'#fff',
   tooltip: {
    trigger: "axis",
    // formatter: '{b}<br/>{a1}-违规率:{c1}<br/>{a0}-违规率:{c0}',
    axisPointer: {
     type: "shadow",
     textStyle: {
     color: "#fff"
     }
    },
   },
   grid: {
    top: '8%',
    right: '8%',
    bottom: '60%'
   },
   legend: {
    data: ['省内', '省外'],
    align: 'left',
    left: '30%',
    top: '4%',
    textStyle:{
     color:'#fff'
    }
   },
   calculable: true,
   xAxis: [{
    type: "category",
    data: xData,
    axisLine: {
    lineStyle: {
     color: 'rgba(255,255,255,0.1)'
    },
    },
    axisLabel: {
    show: true,
    textStyle: {
     color: '#fff'
    }
    },
   }],
   yAxis: {
    type: 'value',
    // name:'单位:(人次 )',
    min: 0,
    max: 500,
    interval: 100,
    axisLine: {
    lineStyle: {
     color: 'rgba(255,255,255,0.1)'
    }
    },
    splitLine: {
    lineStyle: {
     type: 'dashed',
    },
    show:false
    },
    axisLabel: {
    show: true,
    textStyle: {
     color: '#fff'
    }
    },
   },
   series: [{
    name: '省内',
    type: 'bar',
    // color: colors[0],
    data: data1,
    itemStyle:{
     normal: {
     //每个柱子的颜色即为colorList数组里的每一项,如果柱子数目多于colorList的长度，则柱子颜色循环使用该数组
     //此处的箭头函数是为了不改变this的指向
     color: (params) => {
      var index = params.dataIndex;
      var colorList = [
      // 渐变颜色的色值和透明度
      //双柱状图渐变的 第一个柱子的渐变色['rgba(15,235,255,0)','rgba(15,235,255,0)','rgba(15,235,255,0)','rgba(15,235,255,0)','rgba(15,235,255,0)'],
      ['rgba(15,235,255,0.6)','rgba(15,235,255,0.6)','rgba(15,235,255,0.6)','rgba(15,235,255,0.6)','rgba(15,235,255,0.6)'] 
      
      ];
      if(params.dataIndex >= colorList.length){
      index=params.dataIndex-colorList.length;
      }
      //方法一:
      //不使用箭头函数的写法改变渐变色
      // return {
      // colorStops: [{
      //  offset: 0, //颜色开始的位置
      //  color: colorList[0][index] // 0% 处的颜色
      // },{
      //  offset: 0.6, //颜色结束的位置
      //  color: colorList[1][index] // 100% 处的颜色
      // }]
      // }
      //方法二:使用箭头函数的写法 改变双柱状图的渐变颜色
      return new this.$echarts.graphic.LinearGradient(0,0,0,1,[
      {offset: 0.2, color: colorList[1][index]},
      {offset: 1, color: colorList[0][index]}
      ])
     }
     }
    }
   },
   {
    name: '省外',
    type: 'bar',
    // color: colors[1],
    data: data2,
    itemStyle:{
     normal: {
     //每个柱子的颜色即为colorList数组里的每一项,如果柱子数目多于colorList的长度，则柱子颜色循环使用该数组
     color: (params) => {
      var index = params.dataIndex;
      var colorList = [
      // 渐变颜色的色值和透明度
      //双柱状图渐变的 渐变第二个柱子的渐变色['rgba(15,115,255,0)','rgba(15,115,255,0)','rgba(15,115,255,0)','rgba(15,115,255,0)','rgba(15,115,255,0)'],
      ['rgba(15,115,255,0.6)','rgba(15,115,255,0.6)','rgba(15,115,255,0.6)','rgba(15,115,255,0.6)','rgba(15,115,255,0.6)'] 
      ];
      //方法一:
      //不使用箭头函数的写法改变渐变色
      // return {
      // colorStops: [{
      //  offset: 0,
      //  color: colorList[0][index] // 0% 处的颜色
      // },{
      //  offset:0.6,
      //  color: colorList[1][index] // 100% 处的颜色
      // }]
      // }
      //方法二:使用箭头函数的写法 改变双柱状图的渐变颜色
      return new this.$echarts.graphic.LinearGradient(0,0,0,1,[
      {offset: 0.2, color: colorList[1][index]},
      {offset: 1, color: colorList[0][index]}
      ])
     }
     }
    }
   }]
   })
  }
  }
	}

最终结果