ngx-echarts

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

Getting Started
Latest Update
Installation
Usage
API
Events
Demo

Getting Started

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

Latest version @npm:

v4.0.1 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

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

Update angular.json:

{
  ...,
  "architect": {
    "build": {
      "options": {
        "scripts": [
          ...,
+         "node_modules/echarts/dist/echarts.min.js"
        ]
      }
    }
}

If you need ECharts GL support, please install it first:
```
npm install echarts-gl -S

# or
yarn add echarts-gl
```

And then angular.json:

{
  ...,
  "architect": {
    "build": {
      "options": {
        "scripts": [
          ...,
+         "node_modules/echarts-gl/dist/echarts-gl.min.js"
        ]
      }
    }
}

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

Upgrade from v3.x

Install @types/echarts
Import necessary theme or extension files in main.ts. Refer to ECharts Extensions.

Usage

Please refer to the demo page.

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

import { NgxEchartsModule } from 'ngx-echarts';

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

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';

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

/** or you can */
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 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:

chartClick: It emits the same params of 'click' event
chartDblClick: It emits the same params of 'dblclick' event
chartMouseDown: It emits the same params of 'mousedown' event
chartMouseUp: It emits the same params of 'mouseup' event
chartMouseOver: It emits the same params of 'mouseover' event
chartMouseOut: It emits the same params of 'mouseout' event
chartGlobalOut: It emits the same params of 'globalout' event
chartContextMenu: It emits the same params of 'contextmenu' event (since v1.2.1)
chartDataZoom: It emits the same params of 'dataZoom' event (thanks to averhaegen)
chartMapSelectChanged: It emits the same params of 'mapselectchanged' event (thanks to amirch1)
chartMapSelected: It emits the same params of 'mapselected' event (thanks to amirch1)
chartMapUnselected: It emits the same params of 'mapunselected' event (thanks to amirch1)

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.

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

bilxio / ngx-echarts