How do I put a Google Chart in Angular 4

Question

How do you integrate a google chart in an angular 4 application?

I read the answer to the SO question here, but I believe it\'s incomplete. Basically, I\'m attempting t

Answer 1

google.visualization.BarChart is part of the 'corechart' package

need to change the load statement...

  google.charts.load('current', {
    'packages': ['corechart']
  });

the 'bar' package is for the Material chart version
which would be --> google.charts.Bar

however, there are many config options that are not supported by Material charts...

for the full list of unsupported options --> Tracking Issue for Material Chart Feature Parity

Answer 2

I believe there is better way to integrate Google Chart in Angular 4. Library ng2-google-charts already has GoogleChartComponent. Link to npm page describes pretty well how to use it. Below is example of component:

import {Component, ViewEncapsulation, OnInit} from '@angular/core';
import {Component, ViewEncapsulation, OnInit} from '@angular/core';
import {Component, ViewEncapsulation, OnInit} from '@angular/core';
import {ViewChild} from '@angular/core';

import {GoogleChartComponent} from 'ng2-google-charts';

// needed for advanced usage of ng2-google-charts
import {HostListener} from '@angular/core';

@Component({
  selector: '[your-widget]',
  templateUrl: './your-widget.html',
  encapsulation: ViewEncapsulation.None
})
export class YourWidget implements OnInit {

  // type GoogleChartComponent and import for it can be ommited
  @ViewChild('your_chart') chart: GoogleChartComponent;

  // shows spinner while data is loading
  showSpinner: boolean;

  public chartData = {
    chartType: 'AnyChartType', // your type
    dataTable: [
      ['Col1', 'Col2']
    ],
    options: {}
  };

  constructor() {
  }

  ngOnInit(): void {

    this.showSpinner = true;
    this.yourService.getData()
          .subscribe((data) => {
            //this.data = data;
            this.processYourData();
            this.showSpinner = false;
        });
      }

  private processYourData() {
  }

  // advanced usage of chart
  //   in this case redraw function on window:resize event
  @HostListener('window:resize', ['$event'])
  onWindowResize(event: any) {
    // console.log(event.target.innerWidth);
    // Make sure you don't call redraw() in ngOnInit()
    //   - chart would not be initialised by that time, and
    //   - this would cause chart being drawn twice
    this.chart.redraw(); 
  }
}

And your markup would look like this:

<header class="widget-handle">
  <h5>Widget Title</h5>
  <div class="widget-controls">
    <a title="Refresh">
      <i *ngIf="showSpinner" class="fa fa-refresh fa-spin"></i>
    </a>
  </div>
</header>

<div class="widget-body">
  <google-chart #your_chart [data]="chartData" *ngIf="!showSpinner">
  </google-chart>
</div>