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import { AfterViewInit, Component, ElementRef, Input, OnInit, ViewChild } from '@angular/core';
import {Chart} from 'chart.js';
@Component({
selector: 'app-pie-chart',
templateUrl: './pie-chart.component.html',
styleUrls: ['./pie-chart.component.css']
})
export class PieChartComponent implements AfterViewInit {
@Input()width?: number;
@Input()height?: number;
@Input()uniqueValues?: string[] = [];
@Input()uniqueValuesPercent?: number[] = [];
updatePieChart(uniqueValues: string[], uniqueValuesPercent: number[]){
//console.log(this.uniqueValues, this.uniqueValuesPercent);
this.pieChartData.datasets = [{
label: "%",
backgroundColor: ["#3e95cd", "#8e5ea2","#3cba9f","#e8c3b9","#c45850", "#000000"],
data: uniqueValuesPercent,
}];
this.pieChartData.labels = uniqueValues
console.log(this.uniqueValues, this.uniqueValuesPercent);
this.myChart?.update()
};
@ViewChild('piechart') chartRef!: ElementRef;
constructor() { }
pieChartData = {
datasets: [{
label: "Population (millions)",
backgroundColor: ["#3e95cd", "#8e5ea2","#3cba9f","#e8c3b9","#c45850"],
data: [2478,5267,734,784,433]
}], labels : [""]
}
myChart?: Chart;
ngAfterViewInit(): void {
let rem = 100;
const percents : number[] = []
this.uniqueValuesPercent?.forEach(percent => {
rem-=percent*100;
percents.push(percent*100)
})
const data = {
datasets: [{
label: "%",
backgroundColor: ["#3e95cd", "#8e5ea2","#3cba9f","#e8c3b9","#c45850", "#000000"],
data: [...percents, rem]
}], labels : [...this.uniqueValues!,"Ostalo"]
}
const myChart = new Chart(this.chartRef.nativeElement, {
type: 'pie',
data: data
,
options: {
/*title: {
display: true,
text: 'Predicted world population (millions) in 2050'
}*/
plugins:{
legend: {
display: false
},
},
layout: {
padding: 15
}
}
});}
}
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