ngx-echarts

v17.1.0

Published

6 months ago

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xieziyu

angular ng echarts chart

ngx-echarts

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

Getting Started

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

Latest version @npm:

v17.1.0 for Angular 17
v16.2.0 for Angular 16
v15.0.3 for Angular 15
v14.0.0 for Angular 14
v8.0.1 for Angular 13
v7.1.0 for Angular >= 11, < 13
v6.0.1 for Angular >= 10, < 11
v5.2.2 for Angular >= 6, < 10
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

2023.11.10: v17.1.0 / v16.2.0:
- Feat: Exported standalone NgxEchartsDirective, provideEcharts and provideEchartsCore
2023.11.08: v17.0.1:
- Feat: upgrade to Angular 17
2023.10.11: v16.1.0:
- Feat: Add types to chartXXX EventEmitters. Support new events such as: 'selectchanged'
2023.05.10: v16.0.0:
- Feat: upgrade to Angular 16
- Chore: replaced tslint with eslint.
2023.03.27: v15.0.3:
- Fix: [loading]=true is not triggered when chart initialized.
2023.03.20: v15.0.2:
- Fix: unsubscribe ChangeFilter subscriptions onDestroy.
2022.12.01: v15.0.1:
- Feat: Support nullable @Inputs. Issue #378
2022.11.23: v15.0.0:
- Feat: upgrade to Angular 15
2022.06.21: v14.0.0:
- Feat: upgrade to Angular 14
2021.12.07: v8.0.1:
- Fix: NgxEchartsModule.forChild() issue #334
2021.11.08: v8.0.0 / v7.1.0:
- Fix: remove @juggle/resize-observer from the peer dependencies
- Perf: fix performance issue #330
2021.05.17: v7.0.0:
- Feat: support Angular v11, ECharts v5
- Feat: support echart theme object
- Perf: resize animation
2021.01.10: v6.0.1:
- PR #295: Guard dispose (by taipeiwu)
2021.01.10: v6.0.0:
- PR #285: Guard dispose (by gjsmith66)
- update demo to use echarts v5.0
- PR #282: fix avoid "ResizeObserver loop limit exceeded" error (by parkdihoon)
- PR #272: Angular 10 support (by Ghostbird)
2020.11.07: v5.2.1:
- Required resize-observer-polyfill
- PR #271: Fix autoResize functionality (by ThomasBower)
- Exposed methods: refreshChart() and resize()
2020.07.24: v5.1.0:
- PR #240: Added output 'optionsError' (by trajnisz)
- PR #242: Add output for brushEnd event (by Uular)
- PR #246: Allow loading echarts library lazily via native import (by smnbbrv)
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 extensions such as themes or echarts-gl in your main.ts: ECharts Extensions

Upgrade from v4.x

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

Usage

Please refer to the demo page.

Standalone

import NgxEchartsDirective and provideEcharts. Or you can use provideEchartsCore to do treeshaking custom build.

import { NgxEchartsDirective, provideEcharts } from 'ngx-echarts';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [CommonModule, NgxEchartsDirective],
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss'],
  providers: [
    provideEcharts(),
  ]
})
export class AppComponent {}

NgModule

import NgxEchartsModule:

import { NgxEchartsModule } from 'ngx-echarts';

@NgModule({
  imports: [
    NgxEchartsModule.forRoot({
      /**
       * This will import all modules from echarts.
       * If you only need custom modules,
       * please refer to [Custom Build] section.
       */
      echarts: () => import('echarts'), // or import('./path-to-my-custom-echarts')
    }),
  ],
})
export class AppModule {}

The echarts library will be imported only when it gets called the first time thanks to the function that uses the native import.

You can also directly pass the echarts instead which will slow down initial rendering because it will load the whole echarts into your main bundle.

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

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

Directive

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

html:

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

css:

.demo-chart {
  height: 400px;
}

component:

import { EChartsOption } from 'echarts';

// ...

chartOption: EChartsOption = {
  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 properties:

| Input | Type | Default | Description | | --------------- | ------- | ------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [options] | object | null | The same as the options on the official demo site. | | [merge] | object | null | Used to update a 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. Refer to ECharts documentation for details. | | [loading] | boolean | false | Used to toggle the echarts loading animation when your data is not ready. | | [autoResize] | boolean | true | If set to true, the chart will be automatically resized when the window's width is 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 | Used it to initialize echarts with theme. The theme file must also be imported in main.ts. | | [loadingOpts] | object | null | Input an object to customize the 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 to access parts of the 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 the (chartInit) event, enabling you to directly call functions like: resize(), showLoading(), etc. For example:

html:

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

component:

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

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

ECharts Extensions

Import echarts theme files or other extension files after you have 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 obsolete since v4.0

Events

As ECharts supports the 'click', 'dblclick', 'mousedown', 'mouseup', 'mouseover', 'mouseout', and 'globalout' mouse events, our ngx-echarts directive also supports the same mouse events but with an additional chart prefix. For example:

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 the chart is initialized | | 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' | | chartHighlight | echarts event: 'highlight' | | chartDownplay | echarts event: 'downplay' | | chartSelectChanged | echarts event: 'selectchanged' | | chartLegendSelectChanged | echarts event: 'legendselectchanged' | | chartLegendSelected | echarts event: 'legendselected' | | chartLegendUnselected | echarts event: 'legendunselected' | | chartLegendLegendSelectAll | echarts event: 'legendselectall' | | chartLegendLegendInverseSelect | echarts event: 'legendinverseselect' | | chartLegendScroll | echarts event: 'legendscroll' | | chartDataZoom | echarts event: 'datazoom' | | chartDataRangeSelected | echarts event: 'datarangeselected' | | chartGraphRoam | echarts event: 'graphroam' | | chartGeoRoam | echarts event: 'georoam' | | chartTreeRoam | echarts event: 'treeroam' | | chartTimelineChanged | echarts event: 'timelinechanged' | | chartTimelinePlayChanged | echarts event: 'timelineplaychanged' | | chartRestore | echarts event: 'restore' | | chartDataViewChanged | echarts event: 'dataviewchanged' | | chartMagicTypeChanged | echarts event: 'magictypechanged' | | chartGeoSelectChanged | echarts event: 'geoselectchanged' | | chartGeoSelected | echarts event: 'geoselected' | | chartGeoUnselected | echarts event: 'geounselected' | | chartAxisAreaSelected | echarts event: 'axisareaselected' | | chartBrush | echarts event: 'brush' | | chartBrushEnd | echarts event: 'brushend' | | chartBrushSelected | echarts event: 'brushselected' | | chartGlobalCursorTaken | echarts event: 'globalcursortaken' | | 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 a detailed example.

Custom Build

Treeshaking Custom Build

Since version 5.0.1 ECharts supports Treeshaking with NPM.

The app.modules.ts should look like this:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { HttpClientModule } from '@angular/common/http';

import { NgxEchartsDirective, provideEchartsCore } from 'ngx-echarts';

import { AppComponent } from './app.component';

// Import the echarts core module, which provides the necessary interfaces for using echarts.
import * as echarts from 'echarts/core';

// Import bar charts, all suffixed with Chart
import { BarChart } from 'echarts/charts';

// Import the tooltip, title, rectangular coordinate system, dataset and transform components
import {
  TitleComponent,
  TooltipComponent,
  GridComponent,
  DatasetComponent,
  TransformComponent
} from 'echarts/components';

// Features like Universal Transition and Label Layout
import { LabelLayout, UniversalTransition } from 'echarts/features';

// Import the Canvas renderer
// Note that including the CanvasRenderer or SVGRenderer is a required step
import { CanvasRenderer } from 'echarts/renderers';

// Import the theme
import 'echarts/theme/macarons.js';

// Register the required components
echarts.use([
  BarChart,
  TitleComponent,
  TooltipComponent,
  GridComponent,
  DatasetComponent,
  TransformComponent,
  LabelLayout,
  UniversalTransition,
  CanvasRenderer
]);

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    HttpClientModule,
    // import standalone directive:
    NgxEchartsDirective,
  ],
  providers: [{ 
    // Provide custom builded ECharts core:
    provideEchartsCore({ echarts })
  }],
  bootstrap: [AppComponent],
})
export class AppModule {}

Legacy Custom Build

Please refer to ECharts Documentation for more details.

If you want to produce a custom build of 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 the '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);
    }
}

Custom Locale

You can change the chart locale registering a built-in locale (located in node_modules/echarts/lib/i18n/) or a custom locale object. To register a locale, you will need to change the module that echart is being imported (usually app.module.ts).

import {NgxEchartsModule} from "ngx-echarts";
import * as echarts from 'echarts/core';
import langCZ from 'echarts/lib/i18n/langCZ';

echarts.registerLocale("CZ", langCZ)

@NgModule({
  imports: [NgxEchartsModule.forRoot({echarts})],
  declarations: [],
  providers: [],
  bootstrap: [AppComponent]
})

and in your HTML file use:

<div echarts [initOpts]="{ locale: 'CZ' }" [options]="options" class="demo-chart"></div>

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 on: http://localhost:4202

Published

Vulnerabilities

Links

Maintainers

Keywords

Readme

ngx-echarts

Table of contents

Getting Started

Latest Update

Installation

Upgrade from v4.x

Usage

Standalone

NgModule

Directive

API

Directive

ECharts API

ECharts Instance

ECharts Extensions

Service

Events

Custom Build

Treeshaking Custom Build

Legacy Custom Build

Custom Locale

Demo