ng2-charts

What is ng2-charts?

ng2-charts is an Angular wrapper for Chart.js, providing a way to create and manage various types of charts in Angular applications. It simplifies the integration of Chart.js into Angular projects by offering Angular components and directives.

What are ng2-charts's main functionalities?

Line Chart

This feature allows you to create a line chart using ng2-charts. The code sample demonstrates how to set up the chart data, labels, options, colors, and type in an Angular component.

{"template":"<canvas baseChart [datasets]=\"lineChartData\" [labels]=\"lineChartLabels\" [options]=\"lineChartOptions\" [colors]=\"lineChartColors\" [legend]=\"lineChartLegend\" [chartType]=\"lineChartType\"></canvas>","component":"import { Component } from '@angular/core';\n\n@Component({\n  selector: 'app-line-chart',\n  templateUrl: './line-chart.component.html'\n})\nexport class LineChartComponent {\n  public lineChartData: Array<any> = [\n    { data: [65, 59, 80, 81, 56, 55, 40], label: 'Series A' },\n    { data: [28, 48, 40, 19, 86, 27, 90], label: 'Series B' }\n  ];\n  public lineChartLabels: Array<any> = ['January', 'February', 'March', 'April', 'May', 'June', 'July'];\n  public lineChartOptions: any = {\n    responsive: true\n  };\n  public lineChartColors: Array<any> = [\n    { // grey\n      backgroundColor: 'rgba(148,159,177,0.2)',\n      borderColor: 'rgba(148,159,177,1)',\n      pointBackgroundColor: 'rgba(148,159,177,1)',\n      pointBorderColor: '#fff',\n      pointHoverBackgroundColor: '#fff',\n      pointHoverBorderColor: 'rgba(148,159,177,0.8)'\n    },\n    { // dark grey\n      backgroundColor: 'rgba(77,83,96,0.2)',\n      borderColor: 'rgba(77,83,96,1)',\n      pointBackgroundColor: 'rgba(77,83,96,1)',\n      pointBorderColor: '#fff',\n      pointHoverBackgroundColor: '#fff',\n      pointHoverBorderColor: 'rgba(77,83,96,1)'\n    }\n  ];\n  public lineChartLegend: boolean = true;\n  public lineChartType: string = 'line';\n}"}

Bar Chart

This feature allows you to create a bar chart using ng2-charts. The code sample demonstrates how to set up the chart data, labels, options, and type in an Angular component.

{"template":"<canvas baseChart [datasets]=\"barChartData\" [labels]=\"barChartLabels\" [options]=\"barChartOptions\" [colors]=\"barChartColors\" [legend]=\"barChartLegend\" [chartType]=\"barChartType\"></canvas>","component":"import { Component } from '@angular/core';\n\n@Component({\n  selector: 'app-bar-chart',\n  templateUrl: './bar-chart.component.html'\n})\nexport class BarChartComponent {\n  public barChartOptions: any = {\n    scaleShowVerticalLines: false,\n    responsive: true\n  };\n  public barChartLabels: string[] = ['2006', '2007', '2008', '2009', '2010', '2011', '2012'];\n  public barChartType: string = 'bar';\n  public barChartLegend: boolean = true;\n  public barChartData: any[] = [\n    { data: [65, 59, 80, 81, 56, 55, 40], label: 'Series A' },\n    { data: [28, 48, 40, 19, 86, 27, 90], label: 'Series B' }\n  ];\n}"}

Pie Chart

This feature allows you to create a pie chart using ng2-charts. The code sample demonstrates how to set up the chart data, labels, and type in an Angular component.

{"template":"<canvas baseChart [data]=\"pieChartData\" [labels]=\"pieChartLabels\" [chartType]=\"pieChartType\"></canvas>","component":"import { Component } from '@angular/core';\n\n@Component({\n  selector: 'app-pie-chart',\n  templateUrl: './pie-chart.component.html'\n})\nexport class PieChartComponent {\n  public pieChartLabels: string[] = ['Download Sales', 'In-Store Sales', 'Mail Sales'];\n  public pieChartData: number[] = [300, 500, 100];\n  public pieChartType: string = 'pie';\n}"}

Other packages similar to ng2-charts

ngx-charts

ngx-charts is a declarative charting framework for Angular2 and beyond. It uses D3.js under the hood and provides a variety of chart types. Compared to ng2-charts, ngx-charts offers more customization options and is built specifically for Angular, whereas ng2-charts is a wrapper around Chart.js.

angular-google-charts

angular-google-charts is an Angular wrapper for the Google Charts library. It allows you to create a wide range of charts using Google's charting tools. Compared to ng2-charts, angular-google-charts provides access to Google's extensive charting capabilities and is ideal for users who prefer Google Charts.

ng-apexcharts

ng-apexcharts is an Angular wrapper for ApexCharts, a modern charting library that offers a variety of chart types and extensive customization options. Compared to ng2-charts, ng-apexcharts provides more modern and interactive charting features.

README

ng2-charts

Beautiful charts for Angular2 based on Chart.js

Follow me at twitter to be notified about new releases.

Usage & Demo

Sample in below website uses ng2-charts@1.1.0

http://valor-software.github.io/ng2-charts/ http://plnkr.co/edit/7fGsiuRjcF0M0Ffeoml2?p=preview

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Installation

1. You can install ng2-charts using npm

npm install ng2-charts --save

1. You need to install and include Chart.js library in application via html or webpack bundler (more options can be found in official chart.js documentation)

npm install chart.js --save

Important: Embedding Chart.js in application is mandatory!

<script src="node_modules/chart.js/src/chart.js"></script>

Usage & Demo

Demo and API details of ng2-charts can be found here: demo and source code.

System.js

System.js bundles can be found in bundles directory of npm package or at npm cdn

API

Import

import { ChartsModule } from 'ng2-charts/ng2-charts';

// In your App's module:
imports: [
   ChartsModule
]

Chart types

There are one directive for all chart types: base-chart, and there are 6 types of charts: , line, bar, radar, pie, polarArea, doughnut.

Properties

Note: For more information about possible options please refer to original chart.js documentation

• data (Array<number[]> | number[]) - set of points of the chart, it should be Array<number[]> only for line, bar and radar, otherwise number[];
• datasets (Array<{data: Array<number[]> | number[], label: string}>) - data see about, the label for the dataset which appears in the legend and tooltips
• labels (?Array<any>) - x axis labels. It's necessary for charts: line, bar and radar. And just labels (on hover) for charts: polarArea, pie and doughnut
• chartType (?string) - indicates the type of charts, it can be: line, bar, radar, pie, polarArea, doughnut
• options (?any) - chart options (as from Chart.js documentation)
• colors (?Array<any>) - data colors, will use default and|or random colors if not specified (see below)
• legend: (?boolean=false) - if true show legend below the chart, otherwise not be shown

Events

• chartClick: fires when click on a chart has occurred, returns information regarding active points and labels
• chartHover: fires when mousemove (hover) on a chart has occurred, returns information regarding active points and labels

Colors

There are a set several default colors. Colors can be replaced using the colors attribute. If there is more data than colors, colors are generated randomly.

Troubleshooting

Please follow this guidelines when reporting bugs and feature requests:

1. Use GitHub Issues board to report bugs and feature requests (not our email address)
2. Please always write steps to reproduce the error. That way we can focus on fixing the bug, not scratching our heads trying to reproduce it.

Thanks for understanding!

License

The MIT License (see the LICENSE file for the full text)