this.option.series[0].data = result.data
时间: 2024-06-03 07:13:16 浏览: 4
这段代码是将后端返回的数据 result 中的 data 字段赋值给前端图表库中 option 对象的第一个系列(series)的数据(data)属性。具体来说,这里假设 option 对象是用来配置 echarts 图表的,而 result.data 是后端返回的与该图表相关的数据。通过这行代码,我们可以将后端数据与前端图表进行绑定,从而展示出数据可视化的效果。
相关问题
getBuildingNum() { //xAxis.data request.get("/building/getBuildingName").then(res => { if (res.code === '0') { this.option.xAxis.data = res.data //series.data request.get("/room/getEachBuildingStuNum/" + res.data.length).then(result => { if (result.code === '0') { this.option.series[0].data = result.data } }) } }); },
这段代码是用于获取建筑物数量和每个建筑物的学生人数,并将其作为 ECharts 实例的选项。具体来说,该函数首先通过 `request.get` 方法获取建筑物名称,并将其作为 X 轴的数据。然后,通过请求 `/room/getEachBuildingStuNum` 接口获取每个建筑物的学生人数,并将其作为第一个系列的数据。最后,将这些数据设置为 ECharts 实例的选项。
<template> <div id="bar1" style="width:1200px; height:800px"> <button @click="getData">获取API数据</button> <button @click="processData">处理数据</button> </div> </template> <script> import * as echarts from "../src/assets/echarts.min"; import axios from "axios"; export default { name: "Bar1", data() { return { list: [], map: new Map(), huabeiData: [], x_data: [], y_data: [], }; }, methods: { getData() { axios .post("/api/dataVisualization/selectOrderInfo", { startTime: "2020-01-01 00:00:00", endTime: "2020-12-30 00:00:00", }) .then((result) => { this.list = result.data.data; console.log(result.data.data); }) .catch((err) => { console.log(err); }); }, processData() { let list = this.list; function classify(list) { let map = {}; let myArr = []; for (var i = 0; i < list.length; i++) { if (!map[list[i].regionName]) { myArr.push({ regionName: list[i].regionName, data: [list[i]], }); map[list[i].regionName] = list[i]; } else { for (var j = 0; j < myArr.length; j++) { if (list[i].regionName === myArr[j].regionName) { myArr[j].data.push(list[i]); break; } } } } return myArr; } console.log(classify(list)); var classifiedList = classify(list); console.log(classifiedList, "数组"); var allMedians = []; for (var i = 0; i < classifiedList.length; i++) { var regionData = classifiedList[i].data; var amounts = []; for (var j = 0; j < regionData.length; j++) { amounts.push(regionData[j].finalTotalAmount); } amounts.sort((a, b) => b - a); console.log(amounts, "顺序"); var median; var length = amounts.length; if (length % 2 === 0) { median = (amounts[length / 2 - 1] + amounts[length / 2]) / 2; } else { median = amounts[Math.floor(length / 2)]; } allMedians.push({ regionName: classifiedList[i].regionName, median: median, }); } console.log(allMedians); for(let i of allMedians){ this.x_data.push(i.regionName) this.y_data.push(i.median) } console.log(this.x_data) console.log(this.y_data) let barChart = echarts.init(document.getElementById("bar1")) const option = { xAxis:{ type:'category', data:this.x_data }, yAxis:{ type:'value', }, series:[ { data:this.y_data, type:'bar' } ] }; option && barChart.setOption(option,true); }, }, }; </script>这段代码还有需要修改的地方吗,请表明理由
在这段代码中,还有一处需要修改的地方。请将 `echarts` 的导入语句更改为 `import echarts from "echarts"`。原因是在导入 `echarts` 库时,使用的是默认导出(`export default`),因此需要使用 `import echarts from "echarts"` 来导入正确的模块。
修正后的代码如下所示:
```html
<template>
<div id="bar1" style="width:1200px; height:800px">
<button @click="getData">获取API数据</button>
<button @click="processData">处理数据</button>
</div>
</template>
<script>
import echarts from "echarts";
import axios from "axios";
export default {
name: "Bar1",
data() {
return {
list: [],
map: new Map(),
huabeiData: [],
x_data: [],
y_data: [],
};
},
methods: {
getData() {
axios
.post("/api/dataVisualization/selectOrderInfo", {
startTime: "2020-01-01 00:00:00",
endTime: "2020-12-30 00:00:00",
})
.then((result) => {
this.list = result.data.data;
console.log(result.data.data);
})
.catch((err) => {
console.log(err);
});
},
processData() {
let list = this.list;
function classify(list) {
let map = {};
let myArr = [];
for (var i = 0; i < list.length; i++) {
if (!map[list[i].regionName]) {
myArr.push({
regionName: list[i].regionName,
data: [list[i]],
});
map[list[i].regionName] = list[i];
} else {
for (var j = 0; j < myArr.length; j++) {
if (list[i].regionName === myArr[j].regionName) {
myArr[j].data.push(list[i]);
break;
}
}
}
}
return myArr;
}
console.log(classify(list));
var classifiedList = classify(list);
console.log(classifiedList, "数组");
var allMedians = [];
for (var i = 0; i < classifiedList.length; i++) {
var regionData = classifiedList[i].data;
var amounts = [];
for (var j = 0; j < regionData.length; j++) {
amounts.push(regionData[j].finalTotalAmount);
}
amounts.sort((a, b) => b - a);
console.log(amounts, "顺序");
var median;
var length = amounts.length;
if (length % 2 === 0) {
median =
(amounts[length / 2 - 1] + amounts[length / 2]) / 2;
} else {
median = amounts[Math.floor(length / 2)];
}
allMedians.push({
regionName: classifiedList[i].regionName,
median: median,
});
}
console.log(allMedians);
for (let i of allMedians) {
this.x_data.push(i.regionName);
this.y_data.push(i.median);
}
console.log(this.x_data);
console.log(this.y_data);
let barChart = echarts.init(document.getElementById("bar1"));
const option = {
xAxis: {
type: "category",
data: this.x_data,
},
yAxis: {
type: "value",
},
series: [
{
data: this.y_data,
type: "bar",
},
],
};
option && barChart.setOption(option, true);
},
},
};
</script>
```
以上是修正后的代码。除了将 `echarts` 的导入语句更改为 `import echarts from "echarts"` 外,没有其他需要修改的地方。修正后的代码应该可以正确执行,并生成柱状图。
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