ngx-echarts

ngx-echarts

Angular directive for echarts (version >= 3.x) (The project is renamed from angular2-echarts)

• Online Demo
• Online Docs
• Starter Project

Table of contents

1. Getting Started
2. Latest Update
3. Installation
4. Usage
5. API
6. Events
7. Custom Build
8. Demo

Getting Started

ngx-echarts is an Angular (ver >= 2.x) directive for ECharts (ver >= 3.x).

Latest version @npm:

• v4.x for Angular >= 6
• v2.3.1 for Angular < 6 (Please refer to https://github.com/xieziyu/ngx-echarts/blob/v2.x/README.md)

A starter project on Github: https://github.com/xieziyu/ngx-echarts-starter

Latest Update

• 2019.06.14: v4.2.0

  • New: support ECharts custom build

• 2019.04.16: v4.1.1

  • Bugfix: not call 'unsubscribe' when 'this.resizeSub' is undefined. (by Tian-Hun - PR #165)

• 2018.12.16: v4.1.0

  • Perfomance update: echarts events are now lazily bounded, so it won't trigger change dectection unexpectedly. Please refer to PR #154 for more details. Thanks to smnbbrv!
  • [detectEventChanges] is now deprecated.
  • Plenty of echarts event are now supported.

• 2018.11.11: v4.0.1

  • Add map events support: (chartMapSelectChanged), (chartMapSelected), (chartMapUnselected). (by amirch1 - PR #147)

• 2018.08.20: v4.0.0

  • Change: ECharts instance creating is delayed until view initialized.
  • New: [detectEventChanges] Use it to avoid unwanted change detections.
    • If you set it false, chartClick and some other event-emitters become silent. demo
  • Change: [theme] now detect changes at runtime.
    • When you change theme at runtime, the chart would be destroyed first and then initialized again. demo
  • BREAKING CHANGES:
    • ES6 import instead of polluting global namespace. issue #123
    • NgxEchartsService is now obsoleted. If you want to use echarts API, please just import it

    import * as echarts from 'echarts';
    /** or */
    import { graphic, registerMap } from 'echarts';
    

    • Import echarts theme files or other extension files in main.ts. Refer to ECharts Extensions

• 2018.07.24: v3.2.0 & v2.3.1:

  • New: [autoResize] now detects its container element's offset height.
  • Change: Resizing detection is now debounced.

• 2018.06.13: v3.1.0 & v2.2.0:

  • New: [autoResize] now detects its container element's offset width. Especially useful for charts inside <ng-template> such as NG-ZORRO components.

• 2018.06.12: v3.0.1 & v2.1.1:

  • Bugfix: Line chart is not animated on init. issue#102

• 2018.05.08: v3.0.0:

  • Change: Support Angular 6
  • Docs: generate demo app by @angular/cli-6.0.0

• 2018.03.14: v2.1.0

  • New: [loadingOpts] to customize loading style. Refer to API
  • Bugfix: double check dom.style.height before setting default value.

• 2018.02.07: v2.0.2. New: [autoResize] input (default: true). PR #73 by arethore-actility

• 2017.12.11: v2.0.1. Fix issue: No change detection involved in event handler. Refer to issue #26, #28

• 2017.12.04: v2.0.0. Provide an echarts wrapper service: NgxEchartsService.

• 2017.11.25: v2.0.0-beta.0. It has some BREAKING CHANGES you should know.

Installation

• Since v4.0

  # if you use npm
  npm install echarts -S
  npm install ngx-echarts -S
  npm install @types/echarts -D
  
  # or if you use yarn
  yarn add echarts
  yarn add ngx-echarts
  yarn add @types/echarts -D
  

• If you need ECharts GL support, please install it first:

  npm install echarts-gl -S
  
  # or
  yarn add echarts-gl
  

• Import other extentions such as themes or echarts-gl in your main.ts: ECharts Extensions

Upgrade from v3.x

1. Install @types/echarts
2. Import necessary theme or extension files in main.ts. Refer to ECharts Extensions.
3. Remove echarts related scripts in angular.json.

Usage

Please refer to the demo page.

1. Firstly, import NgxEchartsModule in your app module (or any other proper angular module):

   import { NgxEchartsModule } from 'ngx-echarts';
   
   @NgModule({
     imports: [
       ...,
       NgxEchartsModule
     ],
     ...
   })
   export class AppModule { }
   

2. Then: use echarts directive in a div which has pre-defined height. (From v2.0, it has default height: 400px)

   • Simple example:

     • html:

     <div echarts [options]="chartOption" class="demo-chart"></div>
     

     • scss:

     .demo-chart {
       height: 400px;
     }
     

     • component:

     import { EChartOption } from 'echarts';
     
     // ...
     
     chartOption: EChartOption = {
       xAxis: {
         type: 'category',
         data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
       },
       yAxis: {
         type: 'value'
       },
       series: [{
         data: [820, 932, 901, 934, 1290, 1330, 1320],
         type: 'line'
       }]
     }
     

API

Directive

echarts directive support following input porperties:

Input	Type	Default	Description
[options]	object	null	It's the same with the options in official demo site.
[merge]	object	null	You can use it to update part of the options, especially helpful when you need to update the chart data. In fact, the value of merge will be used in echartsInstance.setOption() with notMerge = false. So you can refer to ECharts documentation for details
[loading]	boolean	false	Use it to toggle the echarts loading animation when your data is not ready.
[autoResize]	boolean	true	Charts will be automatically resized when container's width changed.
[initOpts]	object	null	The value of [initOpts] will be used in echarts.init(). It may contain devicePixelRatio, renderer, width or height properties. Refer to ECharts documentation for details
[theme]	string	null	Use it to init echarts with theme. You need to import the theme file in main.ts.
[loadingOpts]	object	null	Input an object to customize loading style. Refer to ECharts documentation for details.
[detectEventChanges]	boolean	true	Whether to register mouse event handlers on echartInstance. Use it to avoid unwanted change detections.

By default, loadingOpts is:

{
  text: 'loading',
  color: '#c23531',
  textColor: '#000',
  maskColor: 'rgba(255, 255, 255, 0.8)',
  zlevel: 0
}

ECharts API

If you need echarts API such as echarts.graphic, please import it from echarts. For example:

/** import all */
import * as echarts from 'echarts/lib/echarts';

new echarts.graphic.LinearGradient(/** ... */);

/** or you can */
import { graphic } from 'echarts/lib/echarts';

new graphic.LinearGradient(/** ... */);

ECharts Instance

echartsInstance is exposed (since v1.1.6) in (chartInit) event. So you can directly call the APIs just like: resize(), showLoading(), etc. For example:

• html:

<div echarts class="demo-chart" [options]="chartOptions" (chartInit)="onChartInit($event)"></div>

• component:

onChartInit(ec) {
  this.echartsIntance = ec;
}

resizeChart() {
  if (this.echartsIntance) {
    this.echartsIntance.resize();
  }
}

ECharts Extensions

Import echarts theme files or other extension files in main.ts. For example:

import { enableProdMode } from '@angular/core';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';

import { AppModule } from './app/app.module';
import { environment } from './environments/environment';

/** echarts extensions: */
import 'echarts-gl';
import 'echarts/theme/macarons.js';
import 'echarts/dist/extension/bmap.min.js';

if (environment.production) {
  enableProdMode();
}

platformBrowserDynamic().bootstrapModule(AppModule)
  .catch(err => console.log(err));

Service

NgxEchartsService has been obsoleted since v4.0

Events

As echarts support the 'click', 'dblclick', 'mousedown', 'mouseup', 'mouseover', 'mouseout', 'globalout' mouse events, our ngx-echarts directive also support the same mouse events but with additional chart prefix.

• html:

<div echarts class="demo-chart" [options]="chartOptions" (chartClick)="onChartClick($event)"></div>

• The '$event' is same with the 'params' that Echarts dispatches

It supports following event outputs:

@Output	Event
chartInit	Emitted when chart is intialized
chartClick	echarts event: 'click'
chartDblClick	echarts event: 'dblclick'
chartMouseDown	echarts event: 'mousedown'
chartMouseMove	echarts event: 'mousemove'
chartMouseUp	echarts event: 'mouseup'
chartMouseOver	echarts event: 'mouseover'
chartMouseOut	echarts event: 'mouseout'
chartGlobalOut	echarts event: 'globalout'
chartContextMenu	echarts event: 'contextmenu'
chartLegendSelectChanged	echarts event: 'legendselectchanged'
chartLegendSelected	echarts event: 'legendselected'
chartLegendUnselected	echarts event: 'legendunselected'
chartLegendScroll	echarts event: 'legendscroll'
chartDataZoom	echarts event: 'datazoom'
chartDataRangeSelected	echarts event: 'datarangeselected'
chartTimelineChanged	echarts event: 'timelinechanged'
chartTimelinePlayChanged	echarts event: 'timelineplaychanged'
chartRestore	echarts event: 'restore'
chartDataViewChanged	echarts event: 'dataviewchanged'
chartMagicTypeChanged	echarts event: 'magictypechanged'
chartPieSelectChanged	echarts event: 'pieselectchanged'
chartPieSelected	echarts event: 'pieselected'
chartPieUnselected	echarts event: 'pieunselected'
chartMapSelectChanged	echarts event: 'mapselectchanged'
chartMapSelected	echarts event: 'mapselected'
chartMapUnselected	echarts event: 'mapunselected'
chartAxisAreaSelected	echarts event: 'axisareaselected'
chartFocusNodeAdjacency	echarts event: 'focusnodeadjacency'
chartUnfocusNodeAdjacency	echarts event: 'unfocusnodeadjacency'
chartBrush	echarts event: 'brush'
chartBrushSelected	echarts event: 'brushselected'
chartRendered	echarts event: 'rendered'
chartFinished	echarts event: 'finished'

You can refer to the echarts tutorial: Events and Actions in ECharts for more details of the event params. You can also refer to the demo page for the detailed example.

Custom Build

If you want to custom build echarts, just import want you need in a file:

// custom-echarts.ts

// chart examples:
import 'echarts/lib/chart/line';
import 'echarts/lib/chart/bar';
// component examples:
import 'echarts/lib/component/tooltip';
import 'echarts/lib/component/title';
import 'echarts/lib/component/toolbox';

And then import it in your main.ts:

import { enableProdMode } from '@angular/core';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';

import { AppModule } from './app/app.module';
import { environment } from './environments/environment';

// For echarts custom build
import './custom-echarts'

if (environment.production) {
  enableProdMode();
}

platformBrowserDynamic().bootstrapModule(AppModule)
  .catch(err => console.log(err));

And if you want to use the global echarts object, please import it from lib instead:

import * as echarts from 'echarts/lib/echarts'
// Don't write:
// import * as echarts from 'echarts'

If you need to import theme files, remember to change their 'echarts' path to 'echarts/lib/echarts', for example:

// ... part of echarts/theme/dark.js:
function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define(['exports', 'echarts/lib/echarts'], factory);
    } else if (typeof exports === 'object' && typeof exports.nodeName !== 'string') {
        // CommonJS
        factory(exports, require('echarts/lib/echarts'));
    } else {
        // Browser globals
        factory({}, root.echarts);
    }
}

Demo

You can clone this repo to your working copy and then launch the demo page in your local machine:

npm install
npm run demo

# or
yarn install
yarn demo

The demo page server is listening to: http://localhost:4202