前言
ECharts是我们常用的图表控件，功能特别强大，每次使用都要查API比较繁琐，这里就记录开发中常用的配置。
官网：https://echarts.apache.org/handbook/zh/get-started
配置项：https://echarts.apache.org/zh/option.html#title
第三方示例平台：https://www.makeapie.cn/echarts
主题：https://echarts.apache.org/zh/theme-builder.html
样式
示例
let option = {
tooltip: {
show: true,
formatter: function (params) {
if (params.value.length > 1) {
return " " + params.name + "：" + params.value[2];
} else {
return " " + params.name + "：" + (params.value || 0);
}
},
},
geo: {
map: "china",
zoom: 1.2,
show: true,
roam: false,
emphasis: {
label: {
show: false,
},
},
layoutSize: "100%",
itemStyle: {
borderColor: "rgba(147, 235, 248, 1)",
borderWidth: 2,
shadowColor: "rgb(90,160,234)",
shadowOffsetX: 0,
shadowOffsetY: 10,
shadowBlur: 10,
},
},
visualMap: {
show: false,
seriesIndex: [0],
inRange: {
color: ["#8db1f1", "#026aa9"],
},
},
series: [
{
type: "map",
map: "china",
aspectScale: 0.75,
zoom: 1.2,
label: {
show: true,
color: "#ffffff",
},
itemStyle: {
borderColor: "rgba(147, 235, 248, 1)",
areaColor: {
type: "radial",
x: 0.5,
y: 0.5,
r: 0.9,
colorStops: [
{
offset: 0,
color: "rgba(17,217,245,0.5)", // 0% 处的颜色
},
{
offset: 1,
color: "rgba(10,209,231,0.2)", // 100% 处的颜色
},
],
globalCoord: false, // 缺省为 false
},
borderWidth: 1,
},
emphasis: {
label: {
show: false,
color: "#ffffff",
},
itemStyle: {
areaColor: "#026aa9",
borderColor: "#fff",
borderWidth: 2,
},
},
data: allData,
},
],
};层级
地图的配置是一层盖一层，从底层到顶层的配置依次为：
geo => series => visualMap
geo 和 series 中都有两个配置项
itemStyle未选中的样式emphasis选中的样式
geo隐藏掉只有series也是能正常显示整个地图的。
geo 和 series 的搭配可以实现一些阴影，偏移从而实现类似立体的效果。
visualMap
其中visualMap设置的背景颜色是动态的，会根据数值的大小在两个颜色之间变化。
visualMap: {
show: false,
seriesIndex: [0],
inRange: {
color: ["#cdcaf8", "#026aa9"],
},
},需要注意的是：
当区域有数据的时候会使用visualMap的颜色覆盖，如果没有数据则会使用
series的itemStyle的样式。
默认最小值和最大值会根据数据自动计算，当然我们也可以指定具体的值。
visualMap: {
min: 0,
max: 100,
inRange: {
color: ['#e0ffff', '#0066ff'] // 设置颜色范围，浅色到深色
},
calculable: true,
show: true
},渐变色
线性渐变
沿着一条直线从一种颜色过渡到另一种颜色。
{
type: "linear",
x: 0,
y: 0,
x2: 1,
y2: 0,
colorStops: [
{
offset: 0,
color: "#8db1f1", // 起始颜色
},
{
offset: 1,
color: "#026aa9", // 终止颜色
},
],
}径向渐变
从一个中心点向四周辐射的渐变色。
{
type: 'radial',
x: 0.5,
y: 0.5,
r: 0.5,
colorStops: [{
offset: 0, color: 'rgba(255, 0, 0, 1)' // 起始颜色
}, {
offset: 1, color: 'rgba(0, 0, 255, 1)' // 终止颜色
}]
}你可以设置以下属性：
- type：设置渐变的类型，固定值为 ‘radial’。
- x、y：设置渐变的中心点坐标，取值范围为 0~1，其中 (0, 0) 表示左上角，(1, 1) 表示右下角。
- r：设置渐变的半径，也是相对于整个绘图区域的半径，取值范围为 0~1，1 表示半径等于绘图区域的最短边的一半。
- colorStops：设置渐变的起始颜色、终止颜色以及它们的位置。 它是一个数组，每个元素包含两个属性，分别是 offset 和 color。 其中 offset 表示该位置距离渐变位置的百分比，取值范围为 0~1，color 则是该位置所对应的颜色值。
覆盖散点
涟漪散点
series: [
{
type: "map",
map: "china",
aspectScale: 0.75,
zoom: 1.2,
label: {
show: true,
color: "#11688a",
},
itemStyle: {
areaColor: "rgba(10,76,139,1)",
borderColor: "#215495",
borderWidth: 1,
},
emphasis: {
label: {
show: false,
},
itemStyle: { areaColor: "#061E3D" },
},
data: allData,
},
{
type: "effectScatter",
coordinateSystem: "geo",
rippleEffect: {
brushType: "stroke",
},
showEffectOn: "render",
itemStyle: {
color: {
type: "radial",
x: 0.5,
y: 0.5,
r: 0.5,
colorStops: [
{
offset: 0,
color: "rgba(5,80,151,0.2)",
},
{
offset: 0.8,
color: "rgba(5,80,151,0.8)",
},
{
offset: 1,
color: "rgba(0,108,255,0.7)",
},
],
global: false, // 缺省为 false
},
},
label: {
show: true,
color: "#fff",
fontWeight: "bold",
position: "inside",
formatter: function (para) {
return "{cnNum|" + para.data.value[2] + "}";
},
rich: {
cnNum: {
fontSize: 13,
color: "#D4EEFF",
},
},
},
symbol: "circle",
symbolSize: function (val) {
if (val[2] === 0) {
return 0;
}
let a = (maxSize4Pin - minSize4Pin) / (max - min);
let b = maxSize4Pin - a * max;
return a * val[2] + b * 1.2;
},
data: convertData(allData),
zlevel: 1,
},
],let convertData = function (outdata) {
let res = [];
for (let i = 0; i < outdata.length; i++) {
let geoCoord = geoCoordMap[outdata[i].name];
if (geoCoord) {
res.push({
name: outdata[i].name,
value: geoCoord.concat(outdata[i].value),
});
}
}
return res;
};值类似于
{
name : "陕西",
value: [113.0668, 33.8818, 140]
}普通散点
{
type: "scatter",
coordinateSystem: "geo",
rippleEffect: {
brushType: "stroke",
},
showEffectOn: "render",
itemStyle: {
color: {
type: "radial",
x: 0.5,
y: 0.5,
r: 0.5,
colorStops: [
{
offset: 0,
color: "rgba(5,80,151,0.8)",
},
{
offset: 0.5,
color: "rgba(0,108,255,0.7)",
},
{
offset: 1,
color: "rgba(5,80,151,0.2)",
},
],
global: false, // 缺省为 false
},
},
label: {
show: true,
color: "#fff",
fontWeight: "bold",
position: "inside",
formatter: function (para) {
return "{cnNum|" + para.data.value[2] + "}";
},
rich: {
cnNum: {
fontSize: 13,
color: "#D4EEFF",
},
},
},
symbol: "circle",
symbolSize: function (val) {
if (val[2] === 0) {
return 0;
}
let a = (maxSize4Pin - minSize4Pin) / (max - min);
let b = maxSize4Pin - a * max;
return a * val[2] + b * 1.2;
},
data: convertData(allData),
zlevel: 1,
},放射线
<template>
<div :class="className" :style="{ height: height, width: width }" />
</template>
<script>
import * as echarts from "echarts";
import resize from "@/assets/utils/resize.js";
import "@/assets/utils/china.js";
export default {
name: "BarChart",
mixins: [resize],
props: {
className: {
type: String,
default: "chart",
},
width: {
type: String,
default: "100%",
},
height: {
type: String,
default: "100%",
},
title: {
type: String,
default: "",
},
chartData: {
type: Object,
default: () => {
return {};
},
},
},
data() {
return {
chart: null,
};
},
watch: {
chartData: function () {
this.initChart();
},
},
async mounted() {
await this.$nextTick();
this.initChart();
},
beforeDestroy() {
if (!this.chart) {
return;
}
this.chart.dispose();
this.chart = null;
},
methods: {
initChart() {
if (!this.chart) {
this.chart = echarts.init(this.$el);
}
var chinaGeoCoordMap = {
黑龙江: [127.9688, 45.368],
内蒙古: [110.3467, 41.4899],
吉林: [125.8154, 44.2584],
北京市: [116.4551, 40.2539],
辽宁: [123.1238, 42.1216],
河北: [114.4995, 38.1006],
天津: [117.4219, 39.4189],
山西: [112.3352, 37.9413],
陕西: [109.1162, 34.2004],
甘肃: [103.5901, 36.3043],
宁夏: [106.3586, 38.1775],
青海: [101.4038, 36.8207],
新疆: [87.9236, 43.5883],
西藏: [91.11, 29.97],
四川: [103.9526, 30.7617],
重庆: [108.384366, 30.439702],
山东: [117.1582, 36.8701],
河南: [113.4668, 34.6234],
江苏: [118.8062, 31.9208],
安徽: [117.29, 32.0581],
湖北: [114.3896, 30.6628],
浙江: [119.5313, 29.8773],
福建: [119.4543, 25.9222],
江西: [116.0046, 28.6633],
湖南: [113.0823, 28.2568],
贵州: [106.6992, 26.7682],
云南: [102.9199, 25.4663],
广东: [113.12244, 23.009505],
广西: [108.479, 23.1152],
海南: [110.3893, 19.8516],
上海: [121.4648, 31.2891],
};
let chinaDatas = [
[
{
name: "黑龙江",
value: 0,
},
],
[
{
name: "内蒙古",
value: 0,
},
],
[
{
name: "吉林",
value: 0,
},
],
[
{
name: "辽宁",
value: 0,
},
],
[
{
name: "河北",
value: 0,
},
],
[
{
name: "天津",
value: 0,
},
],
[
{
name: "山西",
value: 0,
},
],
[
{
name: "陕西",
value: 0,
},
],
[
{
name: "甘肃",
value: 0,
},
],
[
{
name: "宁夏",
value: 0,
},
],
[
{
name: "青海",
value: 0,
},
],
[
{
name: "新疆",
value: 0,
},
],
[
{
name: "西藏",
value: 0,
},
],
[
{
name: "四川",
value: 0,
},
],
[
{
name: "重庆",
value: 0,
},
],
[
{
name: "山东",
value: 0,
},
],
[
{
name: "河南",
value: 0,
},
],
[
{
name: "江苏",
value: 0,
},
],
[
{
name: "安徽",
value: 0,
},
],
[
{
name: "湖北",
value: 0,
},
],
[
{
name: "浙江",
value: 0,
},
],
[
{
name: "福建",
value: 0,
},
],
[
{
name: "江西",
value: 0,
},
],
[
{
name: "湖南",
value: 0,
},
],
[
{
name: "贵州",
value: 0,
},
],
[
{
name: "广西",
value: 0,
},
],
[
{
name: "海南",
value: 0,
},
],
[
{
name: "上海",
value: 1,
},
],
];
let allpoints = Object.values(chinaGeoCoordMap);
let convertData = function (data) {
let res = [];
for (let i = 0; i < data.length; i++) {
let dataItem = data[i];
let fromCoord = chinaGeoCoordMap[dataItem[0].name];
let toCoord = allpoints[Math.floor(Math.random() * allpoints.length)];
if (fromCoord && toCoord) {
res.push([
{
coord: fromCoord,
value: dataItem[0].value,
},
{
coord: toCoord,
},
]);
}
}
return res;
};
var series = [];
series.push(
{
type: "lines",
zlevel: 2,
effect: {
show: true,
period: 4, //箭头指向速度，值越小速度越快
trailLength: 0.02, //特效尾迹长度[0,1]值越大，尾迹越长重
symbol: "arrow", //箭头图标
symbolSize: 5, //图标大小
},
lineStyle: {
normal: {
width: 1, //尾迹线条宽度
opacity: 1, //尾迹线条透明度
curveness: 0.3, //尾迹线条曲直度
color: "#17F5FF",
},
},
data: convertData(chinaDatas),
},
{
type: "effectScatter",
coordinateSystem: "geo",
zlevel: 2,
rippleEffect: {
//涟漪特效
period: 4, //动画时间，值越小速度越快
brushType: "stroke", //波纹绘制方式 stroke, fill
scale: 4, //波纹圆环最大限制，值越大波纹越大
},
label: {
normal: {
show: true,
position: "right", //显示位置
offset: [5, 0], //偏移设置
formatter: function (params) {
//圆环显示文字
return params.data.name;
},
fontSize: 10,
color: "#FFFFFF",
},
emphasis: {
show: true,
},
},
symbol: "circle",
symbolSize: function (val) {
return 5 + val[2] * 5; //圆环大小
},
itemStyle: {
normal: {
show: false,
color: "#17F5FF",
},
},
data: chinaDatas.map(function (dataItem) {
return {
name: dataItem[0].name,
value: chinaGeoCoordMap[dataItem[0].name].concat([
dataItem[0].value,
]),
};
}),
}
);
let option = {
tooltip: {
show: false,
trigger: "item",
backgroundColor: "rgba(166, 200, 76, 0.82)",
borderColor: "#FFFFCC",
showDelay: 0,
hideDelay: 0,
enterable: true,
transitionDuration: 0,
extraCssText: "z-index:100",
formatter: function (params) {
//根据业务自己拓展要显示的内容
var res = "";
var name = params.name;
var value = params.value[params.seriesIndex + 1];
res =
"<span style='color:#fff;'>" +
name +
"</span><br/>数据：" +
value || 0;
return res;
},
},
geo: {
map: "china",
zoom: 1.2,
label: {
emphasis: {
show: false,
},
},
roam: false, //是否允许缩放
itemStyle: {
normal: {
color: "rgba(51, 69, 89, .5)", //地图背景色
borderColor: "#516a89", //省市边界线00fcff 516a89
borderWidth: 1,
},
emphasis: {
color: "rgba(37, 43, 61, .5)", //悬浮背景
},
},
},
series: series,
};
this.chart.setOption(option);
},
},
};
</script>背景变色
<template>
<div :class="className" :style="{ height: height, width: width }" />
</template>
<script>
import * as echarts from "echarts";
import resize from "@/assets/utils/resize.js";
import "@/assets/utils/china.js";
export default {
name: "BarChart",
mixins: [resize],
props: {
className: {
type: String,
default: "chart",
},
width: {
type: String,
default: "100%",
},
height: {
type: String,
default: "100%",
},
title: {
type: String,
default: "",
},
chartData: {
type: Object,
default: () => {
return {};
},
},
},
data() {
return {
chart: null,
};
},
watch: {
chartData: function () {
this.initChart();
},
},
async mounted() {
await this.$nextTick();
this.initChart();
},
beforeDestroy() {
if (!this.chart) {
return;
}
this.chart.dispose();
this.chart = null;
},
methods: {
initChart() {
if (!this.chart) {
this.chart = echarts.init(this.$el);
}
let dataList = [
{
name: "重庆",
value: 347,
},
{
name: "浙江",
value: 59,
},
{
name: "云南",
value: 115,
},
{
name: "新疆维吾尔自治区",
value: 45,
},
{
name: "香港",
value: 81,
},
{
name: "西藏自治区",
value: 5,
},
{
name: "天津",
value: 121,
},
{
name: "四川",
value: 23,
},
{
name: "上海",
value: 1140,
},
{
name: "陕西",
value: 143,
},
{
name: "山西",
value: 77,
},
{
name: "山东",
value: 209,
},
{
name: "青海",
value: 3,
},
{
name: "宁夏回族自治区",
value: 1,
},
{
name: "内蒙古自治区",
value: 7,
},
{
name: "辽宁",
value: 386,
},
{
name: "江西",
value: 67,
},
{
name: "江苏",
value: 464,
},
{
name: "湖南",
value: 6,
},
{
name: "湖北",
value: 614,
},
{
name: "黑龙江",
value: 53,
},
{
name: "河南",
value: 140,
},
{
name: "河北",
value: 190,
},
{
name: "海南",
value: 24,
},
{
name: "贵州",
value: 2,
},
{
name: "广西壮族自治区",
value: 77,
},
{
name: "广东",
value: 449,
},
{
name: "甘肃",
value: 7,
},
{
name: "福建",
value: 23,
},
{
name: "北京",
value: 603,
},
{
name: "安徽",
value: 29,
},
];
let option = {
tooltip: {
show: true,
formatter: function (params) {
if (params.value.length > 1) {
return " " + params.name + "：" + params.value[2];
} else {
return " " + params.name + "：" + (params.value || 0);
}
},
},
visualMap: {
show: false,
seriesIndex: [0],
inRange: {
color: ["#A5DCF4", "#006edd"],
},
},
geo: {
map: "china",
zoom: 1.2,
show: true,
roam: false,
label: {
emphasis: {
show: false,
},
},
layoutSize: "100%",
itemStyle: {
borderColor: "rgba(147, 235, 248, 1)",
borderWidth: 2,
shadowColor: "rgba(10,76,139,1)",
shadowOffsetY: 0,
shadowBlur: 60,
},
},
series: [
{
type: "map",
map: "china",
aspectScale: 0.75,
zoom: 1.2,
label: {
normal: {
show: true,
color: "#4dccff",
},
emphasis: {
show: false,
},
},
itemStyle: {
normal: {
areaColor: {
x: 0,
y: 0,
x2: 1,
y2: 1,
colorStops: [
{
offset: 0,
color: "#073684", // 0% 处的颜色
},
{
offset: 1,
color: "#061E3D", // 100% 处的颜色
},
],
},
borderColor: "#215495",
borderWidth: 1,
},
emphasis: {
areaColor: "#061E3D",
},
},
data: dataList,
},
],
};
this.chart.setOption(option);
},
},
};
</script>
