饼图
原创...大约 2 分钟
基础饼图
饼图主要用于表现不同类目的数据在总和中的占比。每个的弧度表示数据数量的比例
import * as echarts from "echarts";
export default {
install: (app: any) => {
app.config.globalProperties.$pai = (id: any) => {
var chartDom = document.getElementById(id)!;
if (chartDom == null) {
return;
}
echarts.dispose(chartDom);
var myChart = echarts.init(chartDom, "", { width: 500, height: 300 });
window.addEventListener("resize", () => {
myChart.resize({
width: window.innerWidth / 2,
height: window.innerHeight / 2,
});
});
var option = {
series: [
{
type: "pie",
radius: "50%",
label: {
show: true, // 是否显示文本
},
data: [
{
value: 335,
name: "直接访问",
},
{
value: 234,
name: "联盟广告",
},
{
value: 1548,
name: "搜索引擎",
},
],
},
],
};
myChart.setOption(option);
};
},
};
圆环图
圆环图同样可以用来表示数据占总体的比例,相比于饼图,它中间空余的部分可以用来显示一些额外的文字等信息,因而也是一种常用的图表类型
import * as echarts from "echarts";
export default {
install: (app: any) => {
app.config.globalProperties.$pai = (id: any) => {
var chartDom = document.getElementById(id)!;
if (chartDom == null) {
return;
}
echarts.dispose(chartDom);
var myChart = echarts.init(chartDom, "", { width: 500, height: 300 });
var option = {
title: {
text: "圆环图的例子",
left: "center",
top: "center",
},
legend: {
orient: "vertical", // 图例的方向 (水平和竖直) 可选,horizontal
left: 0,
top: 0,
data: ["A", "B", "C"],
},
series: [
{
type: "pie",
radius: ["40%", "70%"], // 把饼图变成圆环图
avoidLabelOverlap: false, // 防止标签堆叠
label: {
show: true,
},
labelLine: {
show: true, // 是否显示视觉引导线
},
data: [
{
value: 335,
name: "A",
},
{
value: 234,
name: "B",
},
{
value: 1548,
name: "C",
},
],
},
],
};
myChart.setOption(option);
};
},
};
南丁格尔图(玫瑰图)
南丁格尔图又称玫瑰图,通常用弧度相同但半径不同的扇形表示各个类目
import * as echarts from "echarts";
export default {
install: (app: any) => {
app.config.globalProperties.$pai = (id: any) => {
var chartDom = document.getElementById(id)!;
if (chartDom == null) {
return;
}
echarts.dispose(chartDom);
var myChart = echarts.init(chartDom, "", { width: 500, height: 300 });
var option = {
toolbox: {
//内置有导出图片,数据视图,动态类型切换,数据区域缩放,重置五个工具。
show: true,
itemGap: 20, // 工具之间的间距
feature: {
saveAsImage: { show: true }, // 图片导出
dataView: { show: true, lang: ["数据视图", "关闭", "刷新"] }, // 数据视图
restore: { show: true }, // 刷新
// 其他请参考官方文档
},
},
series: [
{
type: "pie",
roseType: "area", // 变成玫瑰图,可选radius,area
itemStyle: {
borderRadius: 10,
},
// radius: [50, 150], // 圆环玫瑰图
radius: "50%", // 非圆环玫瑰图
data: [
{
value: 100,
name: "A",
},
{
value: 200,
name: "B",
},
{
value: 300,
name: "C",
},
{
value: 400,
name: "D",
},
{
value: 500,
name: "E",
},
],
},
],
};
myChart.setOption(option);
};
},
};
提示
toolbox 也是全局属性,在任意图表中都可使用
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