ngx-echarts

ngx-echarts

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

• Online Demo
• Online Docs
• Starter Project
• Changelog

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:

• v5.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

• 2020.05.19: v5.0.0
  • BREAKING CHANGES:
    • NgxEchartsModule provides .forRoot() method to inject echarts core.
    • Due to .forRoot method, we can do custom build without NgxEchartsCoreModule. Just import the echarts core from echarts/src/echarts, and other necessary charts.
    • NgxEchartsCoreModule is removed.
    • [detectEventChanges] is removed.

Installation

• Since v5.0

  # if you use npm
  npm install echarts -S
  npm install ngx-echarts -S
  
  # or if you use yarn
  yarn add echarts
  yarn add ngx-echarts
  

• 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 v4.x

1. import echarts and provide it in NgxEchartsModule.forRoot({ echarts }).
2. NgxEchartsCoreModule is removed.

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';
   
   /**
    * This will import all modules from echarts.
    * If you only need custom modules,
    * please refer to [Custom Build] section.
    */
   import * as echarts from 'echarts';
   
   @NgModule({
     imports: [
       NgxEchartsModule.forRoot({
         echarts,
       }),
     ],
   })
   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.

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 { graphic } from '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 after you imported echarts core. For example:

import * as echarts from 'echarts';

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

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

Please refer to ECharts Document for more details.

If you want to custom build echarts, prepare a file like custom-echarts.ts:

// custom-echarts.ts
export * from 'echarts/src/echarts';

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

And then inject it in your NgxEchartsModule:

import { NgxEchartsModule } from 'ngx-echarts';
import * as echarts from './custom-echarts';

@NgModule({
  imports: [
    NgxEchartsModule.forRoot({
      echarts,
    }),
  ],
})
export class AppModule {}

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

import * as echarts from 'echarts/lib/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