如果我想计算 EMI,怎样在 Angular 2 中创建 d3 饼状图呢?我已经为 EMI 计算创建了应用程序。现在,我想展示关于计算的饼状图。
这是 emi.component.ts 文件:
import { Component } from '@angular/core';
import { FormGroup, FormControl, Validators } from '@angular/forms'
import * as D3 from 'd3';
@Component({
selector: 'emi-app',
templateUrl: 'app/emi/emi.component.html',
styleUrls:['app/emi/emi.component.css']
})
export class EmiComponent {
loanamount:number
interestrate:number
loantenure:number
emi:number
newemi:number
emiForm = new FormGroup({
loanamount: new FormControl(null, [Validators.required]),
interestrate: new FormControl(null, [Validators.required]),
loantenure: new FormControl(null, [Validators.required]),
});
calculateEmi() {
if(this.loanamount && this.interestrate && this.loantenure) {
let interestPerMonth = this.interestrate/12/100;
let numerator = Math.pow((1+interestPerMonth), this.loantenure);
let denominator = numerator - 1;
this.emi = ((this.loanamount * interestPerMonth) *
numerator/denominator);
var newemi = this.emi.toFixed(2) ;
console.log(newemi);
}
var pie = new d3pie()
}
}
这是emi.component.html。
<div class="container">
<h1> EMI Calculator</h1>
<form [formGroup]="emiForm" name="calc">
<div class="row">
<div class="col-md-4">
<div class="form-group currency">
<!--<label>Loan Amount:</label><i>₹</i>
<input type= "number" class = "form-control" formControlName =
"loanamount" [(ngModel)]="loanamount">
</div>
<div class="form-group ">
<label>Intrest Rate:</label>
<i>%</i><input type="number" class="form-control" formControlName="interestrate" [(ngModel)]="interestrate">
</div>
<div class="form-group ">
<label>Loan Tenure:</label>
<input type="number" class="form-control" formControlName="loantenure" [(ngModel)]="loantenure">
</div>
<button (click)="calculateEmi()" class="btn btn-primary">Submit</button>
</div>
<div class="col-md-8">
<div id="pieChart"></div>
</div>
</div>
</form>
<hr/>
<div class="row" *ngIf="emi">
<div class= "col-md-4">
<h5>EMI</h5>
</div>
<div class= "col-md-4">
<h5>Total Payable Interest</h5>
</div>
<div class= "col-md-4">
<h5>Total Payment(Principal amount + Interest)</h5>
</div>
</div>
<div class="row" *ngIf="emi">
<div class= "col-md-4">
<h5><i>₹</i>{{emi.toFixed(2)}} / Month</h5>
</div>
<div class= "col-md-4">
<h5><i>₹</i>{{(emi*loantenure-loanamount).toFixed(2)}}</h5>
</div>
<div class= "col-md-4">
<h5><i>₹</i>{{(emi*loantenure).toFixed(2)}}</h5>
</div>
</div>
</div>
我刚开始接触 Angular 2 和 d3,如果有人能够帮我解决问题,我会非常感激。