Vue-ECharts

ECharts component for Vue.js.

🇨🇳 中文版

Built upon ECharts v4.1.0+ and depends on Vue.js v2.2.6+.

Installation

npm (Recommended)

$ npm install echarts vue-echarts

CDN

Include echarts and vue-echarts in your HTML file like this:

<script src="https://cdn.jsdelivr.net/npm/echarts@4.1.0/dist/echarts.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vue-echarts@4.0.2"></script>

Usage

ES Modules with npm & Vue Loader (Recommended)

import Vue from 'vue'
import ECharts from 'vue-echarts' // refers to components/ECharts.vue in webpack

// import ECharts modules manually to reduce bundle size
import 'echarts/lib/chart/bar'
import 'echarts/lib/component/tooltip'

// If you want to use ECharts extensions, just import the extension package, and it will work
// Taking ECharts-GL as an example:
// You only need to install the package with `npm install --save echarts-gl` and import it as follows
import 'echarts-gl'

// register component to use
Vue.component('v-chart', ECharts)

⚠️ Heads up

Importing the source version

Vue-ECharts offers an untranspiled version for webpack by default. If you are using official Vue CLI to create your project, you may encounter the problem that the default configuration will exclude node_modules from files to be transpiled by Babel. You need to modify the configuration as follows:

For Vue CLI 3+, add vue-echarts and resize-detector into transpileDependencies in vue.config.js like this:

// vue.config.js
module.exports = {
  transpileDependencies: [
    'vue-echarts',
    'resize-detector'
  ]
}

For Vue CLI 2 with the webpack template, modify build/webpack.base.conf.js like this:

      {
        test: /\.js$/,
        loader: 'babel-loader',
-       include: [resolve('src'), resolve('test')]
+       include: [
+         resolve('src'),
+         resolve('test'),
+         resolve('node_modules/vue-echarts'),
+         resolve('node_modules/resize-detector')
+       ]
      }

If you are using bare webpack config, just do similar modifications to make it work.

Using with Nuxt.js

When using Vue-ECharts on the server-side with Nuxt.js, it may not be properly transpiled because Nuxt.js prevents files under node_modules from being bundled into the server bundle with only a few exceptions by default. We need to whitelist vue-echarts manually.

For Nuxt.js v2, modify nuxt.config.js as follows:

module.exports = {
  build: {
    transpile: ['vue-echarts', 'resize-detector']
  }
}

For Nuxt.js v1, modify nuxt.config.js as follows:

// Don't forget to
// npm i --save-dev webpack-node-externals
const nodeExternals = require('webpack-node-externals')

module.exports = {
  // ...
  build: {
    extend (config, { isServer }) {
      // ...
      if (isServer) {
        config.externals = [
          nodeExternals({
            // default value for `whitelist` is
            // [/es6-promise|\.(?!(?:js|json)$).{1,5}$/i]
            whitelist: [/es6-promise|\.(?!(?:js|json)$).{1,5}$/i, /^vue-echarts/]
          })
        ]
      }
    }
  }
}

AMD

require.config({
  paths: {
    'vue': 'path/to/vue',
    'echarts': 'path/to/echarts',
    'vue-echarts': 'path/to/vue-echarts'
  }
})

require(['vue', 'vue-echarts'], function (Vue, ECharts) {
  // register component to use...
  Vue.component('v-chart', ECharts)
})

Global variable

Without any module system, the component is exposed as window.VueECharts.

// register component to use
Vue.component('v-chart', VueECharts)

Using the component

<template>
<v-chart :options="polar"/>
</template>

<style>
/**
 * The default size is 600px×400px, for responsive charts
 * you may need to set percentage values as follows (also
 * don't forget to provide a size for the container).
 */
.echarts {
  width: 100%;
  height: 100%;
}
</style>

<script>
import ECharts from 'vue-echarts'
import 'echarts/lib/chart/line'
import 'echarts/lib/component/polar'

export default {
  components: {
    'v-chart': ECharts
  },
  data () {
    let data = []

    for (let i = 0; i <= 360; i++) {
        let t = i / 180 * Math.PI
        let r = Math.sin(2 * t) * Math.cos(2 * t)
        data.push([r, i])
    }

    return {
      polar: {
        title: {
          text: '极坐标双数值轴'
        },
        legend: {
          data: ['line']
        },
        polar: {
          center: ['50%', '54%']
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross'
          }
        },
        angleAxis: {
          type: 'value',
          startAngle: 0
        },
        radiusAxis: {
          min: 0
        },
        series: [
          {
            coordinateSystem: 'polar',
            name: 'line',
            type: 'line',
            showSymbol: false,
            data: data
          }
        ],
        animationDuration: 2000
      }
    }
  }
}
</script>

See more examples here.

Props (all reactive)

initOptions

Used to initialize ECharts instance.
theme

The theme used for current ECharts instance.
options

Used to update data for ECharts instance. Modifying this prop will trigger ECharts' setOption method.

If you mutate the data bound to options while retaining the object reference, setOption will be called with notMerge: false. Otherwise, if you bind a new object to options, setOption will be called with notMerge: true.

For example, if we have the following template:
```
<v-chart :options="data"/>
```
Then:
```
this.data = newObject // setOption(this.options, true)
this.data.title.text = 'Trends' // setOption(this.options, false)
```
group

This prop is automatically bound to the same prop of the ECharts instance.
autoresize (default: false)

This prop indicates ECharts instance should be resized automatically whenever its root is resized.
manual-update (default: false)

For critical performance scenarios (having a large dataset) we'd better bypass Vue's reactivity system for options prop. By specifying manual-update prop with true and not providing options prop, the dataset won't be watched anymore. After doing so, you need to retrieve the component instance with ref and manually call mergeOptions method to update the chart.

Computed

width [readonly]

Used to retrieve the current width of the ECharts instance.
height [readonly]

Used to retrieve the current height of the ECharts instance.
computedOptions [readonly]

Used to retrieve the actual options calculated by ECharts after updating options.

Methods

mergeOptions (use setOption in ECharts under the hood)

Provides a better method name to describe the actual behavior of setOption.
appendData
resize
dispatchAction
showLoading
hideLoading
convertToPixel
convertFromPixel
containPixel
getDataURL
getConnectedDataURL
clear
dispose

Static Methods

connect
disconnect
registerMap
registerTheme
graphic.clipPointsByRect
graphic.clipRectByRect

Events

Vue-ECharts support the following events:

legendselectchanged
legendselected
legendunselected
legendscroll
datazoom
datarangeselected
timelinechanged
timelineplaychanged
restore
dataviewchanged
magictypechanged
geoselectchanged
geoselected
geounselected
pieselectchanged
pieselected
pieunselected
mapselectchanged
mapselected
mapunselected
axisareaselected
focusnodeadjacency
unfocusnodeadjacency
brush
brushselected
rendered
finished
Mouse events
- click
- dblclick
- mouseover
- mouseout
- mousemove
- mousedown
- mouseup
- globalout
- contextmenu
ZRender events (since v4.1.0)
- click
- mousedown
- mouseup
- mousewheel
- dblclick
- contextmenu

For further details, see ECharts' API documentation.

Local development

$ npm i
$ npm run serve

Open http://localhost:8080/demo to see the demo.

License

Ovilia/vue-echarts

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