Chart Using ng2-google-charts

Introduction

In this article, I will explain about the use of ng2-google-charts. I will explain how to implement ng2 google charts in our project. And also, I will discuss some fundamentals of ng2 google charts. 

Prerequisites

• Angular 12
• HTML/Bootstrap

For this article, I have created an Angular project using Angular 12. For creating an Angular project, we need to follow the following steps

Create Project

I have created a project using the following command in the Command Prompt.

ng new ng2chartexample

Open a project in Visual Studio Code using the following commands.

cd ng2chartexample
code .

 Installation

The next step is to install the ng2 google charts-related dependencies using the following commands.

npm i ng2-google-charts

Importing 

The next step is to import the Ng2GoogleChartsModule in your app.module.ts. This will allow you to use all of the features provided by this Ng2 Google Charts Library.

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { Ng2GoogleChartsModule } from 'ng2-google-charts';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    Ng2GoogleChartsModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

How to use ng2 google chart functionality

We need to add below line in HTML page to use Ng2 Google Charts.

<google-chart></google-chart>

Org-Chart

component.ts

import { Component } from '@angular/core';
import {
  GoogleChartInterface
} from 'ng2-google-charts';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  name = 'Angular';

  public orgChart: GoogleChartInterface = {
    chartType: 'OrgChart',
    dataTable: [
      ['Name',   'Manager', 'Tooltip'],
      [{v: 'Gajendra', f: 'Gajendra<div style="color:red; font-style:italic">Manager</div>'}, '', 'The President'],
      [{v: 'Rohit', f: 'Rohit<div style="color:red; font-style:italic">Team Lead</div>'}, 'Gajendra', 'VP'],
      [{v:'Suchit', f: 'Suchit<div style="color:red; font-style:italic">Sr. Engineer</div>'}, 'Rohit', 'SE'],
      [{v:'Ajay', f: 'Suchit<div style="color:red; font-style:italic">Sr. Engineer</div>'}, 'Rohit', 'SE'],
      [{v:'Ishan', f: 'Ishan<div style="color:red; font-style:italic">Engineer</div>'}, 'Ajay', 'JE']
    ],
    options: {
      allowHtml: true,
      allowCollapse: true
    }
  };

}

component.html

<google-chart  [data]="orgChart"></google-chart>

Pie-Chart

component.ts

import { Component } from '@angular/core';
import {
  GoogleChartInterface, GoogleChartType
} from 'ng2-google-charts';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  name = 'Angular';

  public pieChart: GoogleChartInterface = {
    chartType: GoogleChartType.PieChart,
    dataTable: [
      ['Task', 'Hours per Day'],
      ['Work',     6],
      ['Lunch',      1],
      ['Stand-Up',  1],
      ['Shore-end', 1],
      ['Fun',    1]
    ],
    options: {
      allowHtml: true,
      allowCollapse: true
    }
  };

}

component.html

<google-chart  [data]="pieChart"></google-chart>

Line-Chart

component.ts

import { Component } from '@angular/core';
import {
  GoogleChartInterface, GoogleChartType
} from 'ng2-google-charts';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  name = 'Angular';

  public lineChart: GoogleChartInterface = {
    chartType: GoogleChartType.LineChart,
    dataTable: [
      ['Task', 'Hours per Day'],
      ['Work',     6],
      ['Lunch',      1],
      ['Stand-Up',  1],
      ['Shore-end', 1],
      ['Fun',    1]
    ],
    options: {
      allowHtml: true,
      allowCollapse: true
    }
  };

}

component.html

<google-chart  [data]="lineChart"></google-chart>

Column-Chart

component.ts

import { Component } from '@angular/core';
import {
  GoogleChartInterface, GoogleChartType
} from 'ng2-google-charts';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  name = 'Angular';

  public columnChart: GoogleChartInterface = {
    chartType: GoogleChartType.ColumnChart,
    dataTable: [
      ['Task', 'Hours per Day'],
      ['Work',     6],
      ['Lunch',      1],
      ['Stand-Up',  1],
      ['Shore-end', 1],
      ['Fun',    1]
    ],
    options: {
      allowHtml: true,
      allowCollapse: true
    }
  };

}

component.html

<google-chart  [data]="columnChart"></google-chart>

Column-Chart

component.ts

import { Component } from '@angular/core';
import {
  GoogleChartInterface, GoogleChartType
} from 'ng2-google-charts';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  name = 'Angular';

  public areaChart: GoogleChartInterface = {
    chartType: GoogleChartType.AreaChart,
    dataTable: [
      ['Task', 'Hours per Day'],
      ['Work',     6],
      ['Lunch',      1],
      ['Stand-Up',  1],
      ['Shore-end', 1],
      ['Fun',    1]
    ],
    options: {
      allowHtml: true,
      allowCollapse: true
    }
  };

}

component.html

<google-chart  [data]="areaChart"></google-chart>

Summary

In this article, I have discussed various features of Ng2 Google Chart with example in Angular.