5.饼图、环图、玫瑰图
1.饼图
<template>
<div>
<div ref="chart1" class="chart"></div>
</div>
</template>
<script>
import * as echarts from "echarts";
export default {
data() {
return {
chartOption: {
color: ["#37a2da", "#32c5e9", "#9fe6b8", "#ffdb5c", "#ff9f7f"],
tooltip: {
trigger: "item",
formatter: "{b}{c}%",
backgroundColor: "rgba(8,49,107,0.9)", //设置背景颜色
borderColor: "rgba(8,49,107,0.9)", //设置边框颜色
textStyle: {
color: "white" //设置文字颜色
},
//formatter: "{a} <br/>{b} : {c} ({d}%)"
formatter: params => {
return (
`${params.seriesName}<br/>` +
`<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
`${params.name}：` +
`${params.value}%`
);
}
},
toolbox: {
show: true
},
legend: {
x: "right", //可设定图例在左、右、居中
y: "center", //可设定图例在上、下、居中
align: "left", //字在图例的左边或右边【left/right】
orient: "vertical", //图例方向【horizontal/vertical】
icon: "circle", //图例形状【circle、rect、roundRect、triangle、diamond、pin、arrow、none】
itemGap: 12,
textStyle: {
rich: {
name: {
color: "#595959",
fontSize: 14,
width: 100,
fontWeight: 400
},
value: {
color: "#595959",
fontSize: 14,
width: 100,
fontWeight: 400
}
}
}
},
series: [
{
name: "饼图",
type: "pie",
radius: "70%",
center: ["50%", "50%"],
data: [],
emphasis: {
itemStyle: {
shadowBlur: 10,
shadowOffsetX: 0,
shadowColor: "rgba(0, 0, 0, 0.5)"
}
}
}
]
}
};
},
async mounted() {
const chart = echarts.init(this.$refs.chart1);
chart.setOption(this.chartOption);
await this.fetchData();
},
methods: {
async fetchData() {
//获取接口数据
let series1 = [
{ value: 64, name: "摄像头" },
{ value: 63, name: "灯" },
{ value: 58, name: "空调" },
{ value: 54, name: "温度计" },
{ value: 32, name: "其他" }
];
//将数据渲染到echarts图
const chart = echarts.init(this.$refs.chart1);
chart.setOption({
legend: {
formatter(name) {
const item = series1.filter(item => item.name === name)[0];
return `{name|${name}}{value|${item.value}}`;
}
},
series: [{ data: series1 }]
});
}
}
};
</script>
<style scoped lang="scss">
.chart {
width: 100%;
height: 300px;
}
</style>
2.环图
<template>
<div>
<div ref="chart1" class="chart"></div>
</div>
</template>
<script>
import * as echarts from "echarts";
const getname = ["时长异常", "时长正常", "无时长"];
const getNum = [0, 0, 0];
export default {
data() {
return {
chartOption: {
legend: {
type: "scroll",
orient: "vertical",
right: 0,
top: "28%",
icon: "circle",
itemWidth: 15,
itemHeight: 15,
itemGap: 20,
// legend格式化
formatter: function(name) {
for (let i = 0; i < getname.length; i++) {
if (name == getname[i]) {
return `{name|${name}}{value${i}|${getNum[i]}%}`;
}
}
},
textStyle: {
color: "rgba(0, 0, 0, 0.65)",
rich: {
name: {
fontSize: 15
// padding: [36, 0, 0, 0]
},
value: {
fontSize: 15,
color: "rgba(0, 0, 0, 0.85)",
// padding: [20, 0, 0, 0],
fontWeight: 700
}
}
}
},
title: {
//圆环中间内容
text: "6000",
subtext: "统计数",
left: "center",
top: "40%",
textStyle: {
color: "black",
fontSize: 14,
align: "center"
},
subtextStyle: {
fontSize: 14,
fontWeight: "700",
align: "center",
color: "black"
}
},
tooltip: {
trigger: "item",
formatter: "{b}\n{c}%",
backgroundColor: "rgba(8,49,107,0.9)", //设置背景颜色
borderColor: "rgba(8,49,107,0.9)", //设置边框颜色
textStyle: {
color: "white" //设置文字颜色
},
//formatter: "{a} <br/>{b} : {c} ({d}%)"
formatter: params => {
return (
`${params.seriesName}<br/>` +
`<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
`${params.name}：` +
`${params.value}%`
);
}
},
series: [
{
name: "环图",
avoidLabelOverlap: true, //防止标签重叠
type: "pie",
radius: ["58%", "73%"],
center: ["50%", "50%"],
hoverAnimation: true,
label: {
padding: [15, 0, 0, 0],
color: "#4E5969",
fontSize: 14,
formatter: "{b|{b}} {d|{c}%}\n",
rich: {
b: {
fontSize: 14,
color: "#4E5969"
},
d: {
fontSize: 16,
fontWeight: 600,
fontFamily: "DINAlternate-Bold, DINAlternate",
color: "#4E5969"
}
}
},
labelLine: {
show: true,
lineStyle: {
width: 3
},
normal: {
length: 10, // 指示线长度
length2: 10
}
},
data: [
{
name: "时长异常",
value: 0,
itemStyle: {
color: "#FF8542",
borderColor: "#fff",
borderWidth: 2
}
},
{
name: "时长正常",
value: 0,
itemStyle: {
color: "#358EFE",
borderColor: "#fff",
borderWidth: 2
}
},
{
name: "无时长",
value: 0,
itemStyle: {
color: "#12C2C1",
borderColor: "#fff",
borderWidth: 2
}
}
],
emphasis: {
show: false
}
},
{
//虚线圆环
type: "gauge",
zlevel: 2,
splitNumber: 85,
radius: "74%",
center: ["50%", "50%"],
startAngle: 90,
endAngle: -269.9999,
axisLine: {
show: false
},
axisTick: {
show: false
},
axisLabel: {
show: false
},
splitLine: {
show: true,
length: 3,
lineStyle: {
width: 2,
color: "#017383"
}
},
pointer: {
show: 0
},
detail: {
show: 0
}
}
]
}
};
},
async mounted() {
const chart = echarts.init(this.$refs.chart1);
chart.setOption(this.chartOption);
await this.fetchData();
},
methods: {
async fetchData() {
//获取接口数据
let series1 = [41.63, 51.58, 6.79];
//将数据渲染到echarts图
const chart = echarts.init(this.$refs.chart1);
chart.setOption({
legend: {
formatter: function(name) {
for (let i = 0; i < getname.length; i++) {
if (name == getname[i]) {
return `{name|${name}}{value${i}|${getNum[i]}%}`;
}
}
}
},
series: [
{
data: [
{name: "时长异常",value: series2[0]},
{name: "时长正常",value: series2[1]},
{name: "无时长",value: series2[2]}
]
}
]
});
}
}
};
</script>
<style scoped lang="scss">
.chart {
width: 100%;
height: 200px;
}
</style>
3.玫瑰图
<template>
<div>
<div ref="chart1" class="chart"></div>
</div>
</template>
<script>
import * as echarts from "echarts";
export default {
data() {
return {
chartOption: {
color: ["#73A0FB", "#73DEB4", "#FACA42", "#F98973", "#2F467A"],
legend: {
orient: "vertical",
top: "center",
right: "10%",
itemGap: 20,
itemWidth: 16,
itemHeight: 16,
textStyle: {
// color: "#fff",
fontSize: 13
},
data: ["农业专业合作社", "农业企业", "农业冷藏冷库", "农业园区"]
},
tooltip: {
trigger: "item",
formatter: "{b}\n{c}%",
backgroundColor: "rgba(8,49,107,0.9)", //设置背景颜色
borderColor: "rgba(8,49,107,0.9)", //设置边框颜色
textStyle: {
color: "white" //设置文字颜色
},
//formatter: "{a} <br/>{b} : {c} ({d}%)"
formatter: params => {
return (
`${params.seriesName}<br/>` +
`<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
`${params.name}：` +
`${params.value}%`
);
}
},
series: [
{
name: "玫瑰图",
type: "pie",
radius: ["40%", "70%"],
center: ["50%", "50%"],
roseType: "radius",
minShowLabelAngle: 60,
label: {
show: true,
normal: {
position: "outside",
fontSize: 14,
formatter: params => {
return (
params.name +
// '(' +
// ((params.value / total) * 100).toFixed(2) +
// '%)' +
// '\n' +
params.value +
"个"
);
}
}
},
labelLine: {
length: 1,
length2: 10,
smooth: true
},
data: []
}
]
}
};
},
async mounted() {
const chart = echarts.init(this.$refs.chart1);
chart.setOption(this.chartOption);
await this.fetchData();
},
methods: {
async fetchData() {
//获取接口数据
let series1 = [
{name: "农业专业合作社",value: 50},
{name: "农业企业",value: 40},
{name: "农业冷藏冷库",value: 30},
{name: "农业园区",value: 20}];
//将数据渲染到echarts图
const chart = echarts.init(this.$refs.chart1);
chart.setOption({
series: [{ data: series1 }]
});
}
}
};
</script>
<style scoped lang="scss">
.chart {
width: 100%;
height: 200px;
}
</style>
4.3D饼图
注意：首先确保在项目中引入了echarts和echarts-gl
<template>
<div class="water-eval-container">
<div class="cityGreenLand-charts" id="cityGreenLand-charts">
</div>
</div>
</template>
<script>
import echarts from 'echarts'
import 'echarts-gl';
export default {
name: "cityGreenLand",
components: {},
data() {
return {
optionData: [{
name: '林地面积统计',
value: 10000,
itemStyle: {
color: '#22c4ff',
}
}, {
name: '草地面积统计',
value: 12116,
itemStyle: {
color: '#aaff00'
}
}, {
name: '耕地地面积统计',
value: 16616,
itemStyle: {
color: '#ffaaff'
}
}],
}
},
mounted() {
this.$nextTick(function() {
this.init();
});
},
methods: {
init() {
//构建3d饼状图
let myChart = echarts.init(document.getElementById('cityGreenLand-charts'));
// 传入数据生成 option
this.option = this.getPie3D(this.optionData, 0.8);
myChart.setOption(this.option);
//是否需要label指引线，如果要就添加一个透明的2d饼状图并调整角度使得labelLine和3d的饼状图对齐，并再次setOption
this.option.series.push({
name: 'pie2d',
type: 'pie',
labelLine:{
length:10,
length2:10
},
startAngle: -20 , //起始角度，支持范围[0, 360]。
clockwise: false,//饼图的扇区是否是顺时针排布。上述这两项配置主要是为了对齐3d的样式
radius: ['20%', '50%'],
center: ['50%', '50%'],
data: this.optionData,
itemStyle:{
opacity:0
}
});
myChart.setOption(this.option);
this.bindListen(myChart);
},
getPie3D(pieData, internalDiameterRatio) {
//internalDiameterRatio:透明的空心占比
let that = this;
let series = [];
let sumValue = 0;
let startValue = 0;
let endValue = 0;
let legendData = [];
let legendBfb = [];
let k = 1 - internalDiameterRatio;
pieData.sort((a, b) => {
return (b.value - a.value);
});
// 为每一个饼图数据，生成一个 series-surface 配置
for (let i = 0; i < pieData.length; i++) {
sumValue += pieData[i].value;
let seriesItem = {
name: typeof pieData[i].name === 'undefined' ? `series${i}` : pieData[i].name,
type: 'surface',
parametric: true,
wireframe: {
show: false
},
pieData: pieData[i],
pieStatus: {
selected: false,
hovered: false,
k: k
},
center: ['10%', '50%']
};
if (typeof pieData[i].itemStyle != 'undefined') {
let itemStyle = {};
typeof pieData[i].itemStyle.color != 'undefined' ? itemStyle.color = pieData[i].itemStyle.color : null;
typeof pieData[i].itemStyle.opacity != 'undefined' ? itemStyle.opacity = pieData[i].itemStyle.opacity : null;
seriesItem.itemStyle = itemStyle;
}
series.push(seriesItem);
}
// 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
// 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
legendData = [];
legendBfb = [];
for (let i = 0; i < series.length; i++) {
endValue = startValue + series[i].pieData.value;
series[i].pieData.startRatio = startValue / sumValue;
series[i].pieData.endRatio = endValue / sumValue;
series[i].parametricEquation = this.getParametricEquation(series[i].pieData.startRatio, series[i].pieData.endRatio,
false, false, k, series[i].pieData.value);
startValue = endValue;
let bfb = that.fomatFloat(series[i].pieData.value / sumValue, 4);
legendData.push({
name: series[i].name,
value: bfb
});
legendBfb.push({
name: series[i].name,
value: bfb
});
}
let boxHeight = this.getHeight3D(series, 26);//通过传参设定3d饼/环的高度，26代表26px
// 准备待返回的配置项，把准备好的 legendData、series 传入。
let option = {
legend: {
data: legendData,
orient: 'horizontal',
left: 10,
top: 10,
itemGap: 10,
textStyle: {
color: '#A1E2FF',
},
show: true,
icon: "circle",
formatter: function(param) {
let item = legendBfb.filter(item => item.name == param)[0];
let bfs = that.fomatFloat(item.value * 100, 2) + "%";
return `${item.name}${bfs}`;
}
},
labelLine: {
show: true,
lineStyle: {
color: '#7BC0CB'
}
},
label: {
show: true,
position: 'outside',
rich: {
b: {
color: '#7BC0CB',
fontSize: 12,
lineHeight: 20
},
c: {
fontSize: 16,
},
},
formatter: '{b|{b} \n}{c|{c}}{b| 亩}',
},
tooltip: {
formatter: params => {
if (params.seriesName !== 'mouseoutSeries' && params.seriesName !== 'pie2d') {
let bfb = ((option.series[params.seriesIndex].pieData.endRatio - option.series[params.seriesIndex].pieData.startRatio) *
100).toFixed(2);
return `${params.seriesName}<br/>` +
`<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
`${ bfb }%`;
}
}
},
xAxis3D: {
min: -1,
max: 1
},
yAxis3D: {
min: -1,
max: 1
},
zAxis3D: {
min: -1,
max: 1
},
grid3D: {
show: false,
boxHeight: boxHeight, //圆环的高度
viewControl: { //3d效果可以放大、旋转等，请自己去查看官方配置
alpha: 40, //角度
distance: 300,//调整视角到主体的距离，类似调整zoom
rotateSensitivity: 0, //设置为0无法旋转
zoomSensitivity: 0, //设置为0无法缩放
panSensitivity: 0, //设置为0无法平移
autoRotate: false //自动旋转
}
},
series: series
};
return option;
},
//获取3d丙图的最高扇区的高度
getHeight3D(series, height) {
series.sort((a, b) => {
return (b.pieData.value - a.pieData.value);
})
return height * 25 / series[0].pieData.value;
},
// 生成扇形的曲面参数方程，用于 series-surface.parametricEquation
getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, h) {
// 计算
let midRatio = (startRatio + endRatio) / 2;
let startRadian = startRatio * Math.PI * 2;
let endRadian = endRatio * Math.PI * 2;
let midRadian = midRatio * Math.PI * 2;
// 如果只有一个扇形，则不实现选中效果。
if (startRatio === 0 && endRatio === 1) {
isSelected = false;
}
// 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
k = typeof k !== 'undefined' ? k : 1 / 3;
// 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
let offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0;
let offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0;
// 计算高亮效果的放大比例（未高亮，则比例为 1）
let hoverRate = isHovered ? 1.05 : 1;
// 返回曲面参数方程
return {
u: {
min: -Math.PI,
max: Math.PI * 3,
step: Math.PI / 32
},
v: {
min: 0,
max: Math.PI * 2,
step: Math.PI / 20
},
x: function(u, v) {
if (u < startRadian) {
return offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
}
if (u > endRadian) {
return offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
}
return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
},
y: function(u, v) {
if (u < startRadian) {
return offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
}
if (u > endRadian) {
return offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
}
return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
},
z: function(u, v) {
if (u < -Math.PI * 0.5) {
return Math.sin(u);
}
if (u > Math.PI * 2.5) {
return Math.sin(u) * h * .1;
}
return Math.sin(v) > 0 ? 1 * h * .1 : -1;
}
};
},
fomatFloat(num, n) {
var f = parseFloat(num);
if (isNaN(f)) {
return false;
}
f = Math.round(num * Math.pow(10, n)) / Math.pow(10, n); // n 幂
var s = f.toString();
var rs = s.indexOf('.');
//判定如果是整数，增加小数点再补0
if (rs < 0) {
rs = s.length;
s += '.';
}
while (s.length <= rs + n) {
s += '0';
}
return s;
},
bindListen(myChart) {
// 监听鼠标事件，实现饼图选中效果（单选），近似实现高亮（放大）效果。
let that = this;
let selectedIndex = '';
let hoveredIndex = '';
// 监听点击事件，实现选中效果（单选）
myChart.on('click', function(params) {
// 从 option.series 中读取重新渲染扇形所需的参数，将是否选中取反。
let isSelected = !that.option.series[params.seriesIndex].pieStatus.selected;
let isHovered = that.option.series[params.seriesIndex].pieStatus.hovered;
let k = that.option.series[params.seriesIndex].pieStatus.k;
let startRatio = that.option.series[params.seriesIndex].pieData.startRatio;
let endRatio = that.option.series[params.seriesIndex].pieData.endRatio;
// 如果之前选中过其他扇形，将其取消选中（对 option 更新）
if (selectedIndex !== '' && selectedIndex !== params.seriesIndex) {
that.option.series[selectedIndex].parametricEquation = that.getParametricEquation(that.option.series[
selectedIndex].pieData
.startRatio, that.option.series[selectedIndex].pieData.endRatio, false, false, k, that.option.series[
selectedIndex].pieData
.value);
that.option.series[selectedIndex].pieStatus.selected = false;
}
// 对当前点击的扇形，执行选中/取消选中操作（对 option 更新）
that.option.series[params.seriesIndex].parametricEquation = that.getParametricEquation(startRatio, endRatio,
isSelected,
isHovered, k, that.option.series[params.seriesIndex].pieData.value);
that.option.series[params.seriesIndex].pieStatus.selected = isSelected;
// 如果本次是选中操作，记录上次选中的扇形对应的系列号 seriesIndex
isSelected ? selectedIndex = params.seriesIndex : null;
// 使用更新后的 option，渲染图表
myChart.setOption(that.option);
});
// 监听 mouseover，近似实现高亮（放大）效果
myChart.on('mouseover', function(params) {
// 准备重新渲染扇形所需的参数
let isSelected;
let isHovered;
let startRatio;
let endRatio;
let k;
// 如果触发 mouseover 的扇形当前已高亮，则不做操作
if (hoveredIndex === params.seriesIndex) {
return;
// 否则进行高亮及必要的取消高亮操作
} else {
// 如果当前有高亮的扇形，取消其高亮状态（对 option 更新）
if (hoveredIndex !== '') {
// 从 option.series 中读取重新渲染扇形所需的参数，将是否高亮设置为 false。
isSelected = that.option.series[hoveredIndex].pieStatus.selected;
isHovered = false;
startRatio = that.option.series[hoveredIndex].pieData.startRatio;
endRatio = that.option.series[hoveredIndex].pieData.endRatio;
k = that.option.series[hoveredIndex].pieStatus.k;
// 对当前点击的扇形，执行取消高亮操作（对 option 更新）
that.option.series[hoveredIndex].parametricEquation = that.getParametricEquation(startRatio, endRatio,
isSelected,
isHovered, k, that.option.series[hoveredIndex].pieData.value);
that.option.series[hoveredIndex].pieStatus.hovered = isHovered;
// 将此前记录的上次选中的扇形对应的系列号 seriesIndex 清空
hoveredIndex = '';
}
// 如果触发 mouseover 的扇形不是透明圆环，将其高亮（对 option 更新）
if (params.seriesName !== 'mouseoutSeries' && params.seriesName !== 'pie2d') {
// 从 option.series 中读取重新渲染扇形所需的参数，将是否高亮设置为 true。
isSelected = that.option.series[params.seriesIndex].pieStatus.selected;
isHovered = true;
startRatio = that.option.series[params.seriesIndex].pieData.startRatio;
endRatio = that.option.series[params.seriesIndex].pieData.endRatio;
k = that.option.series[params.seriesIndex].pieStatus.k;
// 对当前点击的扇形，执行高亮操作（对 option 更新）
that.option.series[params.seriesIndex].parametricEquation = that.getParametricEquation(startRatio, endRatio,
isSelected, isHovered, k, that.option.series[params.seriesIndex].pieData.value + 5);
that.option.series[params.seriesIndex].pieStatus.hovered = isHovered;
// 记录上次高亮的扇形对应的系列号 seriesIndex
hoveredIndex = params.seriesIndex;
}
// 使用更新后的 option，渲染图表
myChart.setOption(that.option);
}
});
// 修正取消高亮失败的 bug
myChart.on('globalout', function() {
// 准备重新渲染扇形所需的参数
let isSelected;
let isHovered;
let startRatio;
let endRatio;
let k;
if (hoveredIndex !== '') {
// 从 option.series 中读取重新渲染扇形所需的参数，将是否高亮设置为 true。
isSelected = that.option.series[hoveredIndex].pieStatus.selected;
isHovered = false;
k = that.option.series[hoveredIndex].pieStatus.k;
startRatio = that.option.series[hoveredIndex].pieData.startRatio;
endRatio = that.option.series[hoveredIndex].pieData.endRatio;
// 对当前点击的扇形，执行取消高亮操作（对 option 更新）
that.option.series[hoveredIndex].parametricEquation = that.getParametricEquation(startRatio, endRatio,
isSelected,
isHovered, k, that.option.series[hoveredIndex].pieData.value);
that.option.series[hoveredIndex].pieStatus.hovered = isHovered;
// 将此前记录的上次选中的扇形对应的系列号 seriesIndex 清空
hoveredIndex = '';
}
// 使用更新后的 option，渲染图表
myChart.setOption(that.option);
});
}
}
}
</script>
<style lang="less">
.water-eval-container {
width: 100%;
height: 100%;
}
.cityGreenLand-charts {
height: 200px;
width: 400px;
}
</style>
转载请注明原文链接：https://www.cnblogs.com/chenJieLing/
