Pie dough nut in Vue Accumulation chart component

3 Mar 202324 minutes to read

Pie Chart

To render a pie series, use the series type as Pie and inject the PieSeries module into the provide. If the PieSeries module is not injected, this module will be loaded by default.

app.vue

<template>
    <div id="app">
         <ejs-accumulationchart id="container">
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' xName='x' yName='y'> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, PieSeries } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [
           { x: 'Jan', y: 3, fill: '#498fff', text:'January' }, { x: 'Feb', y: 3.5, fill: '#ffa060', text: 'February' },
           { x: 'Mar', y: 7, fill: '#ff68b6', text: 'March' }, { x: 'Apr', y: 13.5, fill: '#81e2a1', text: 'April' }
            ]
    };
  },
  provide: {
     accumulationchart: [PieSeries]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Radius Customization

By default, radius of the pie series will be 80% of the size (minimum of chart width and height).

You can customize this using radius property of the series.

app.vue

<template>
    <div id="app">
         <ejs-accumulationchart id="container">
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' xName='x' yName='y' radius='90%'> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, PieSeries } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [
           { x: 'Jan', y: 3, fill: '#498fff', text:'January' }, { x: 'Feb', y: 3.5, fill: '#ffa060', text: 'February' },
           { x: 'Mar', y: 7, fill: '#ff68b6', text: 'March' }, { x: 'Apr', y: 13.5, fill: '#81e2a1', text: 'April' }
            ]
    };
  },
  provide: {
     accumulationchart: [PieSeries]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Pie Center

The center position of the pie can be changed by Center X and Center Y. By default, center value of the pie series x and y is 50%. You can customize this using center property of the series.

app.vue

<template>
    <div id="app">
        <ejs-accumulationchart id='chartcontainer' :title='title'
             :legendSettings='legendSettings' :tooltip='tooltip' enableSmartLables='true' :enableAnimation='enableAnimation' :center='center'>
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' :startAngle='startAngle' :endAngle='endAngle'  :radius='radius'  xName='x' yName='y' :dataLabel='dataLabel' name='Browser' innerRadius='0%'> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, AccumulationTooltip, PieSeries, AccumulationDataLabel, AccumulationLegend  } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [
        { 'x': 'Chrome', y: 37, text: '37%' }, { 'x': 'UC Browser', y: 17, text: '17%' },
        { 'x': 'iPhone', y: 19, text: '19%' },
        { 'x': 'Others', y: 4, text: '4%' }, { 'x': 'Opera', y: 11, text: '11%' },
        { 'x': 'Android', y: 12, text: '12%' }
      ],
      dataLabel: {
        visible: true,
        position: 'Inside', name: 'text',
        font: {
          fontWeight: '600'
        }
      },
      enableSmartLabels: true,
      enableAnimation: false,
      legendSettings: {
        visible: false,
      },
      tooltip: { enable: false, format: '${point.x} : <b>${point.y}%</b>' },
      startAngle: '0',
      endAngle: '360',
      radius: '70%',
      explodeOffset: '10%',
      explodeIndex : 0,
      center: {x: '50%', y: '50%'},
      title: "Mobile Browser Statistics"
    };
  },
  provide: {
     accumulationchart: [PieSeries, AccumulationDataLabel]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Various Radius Pie Chart

You can use radius mapping to render the slice with different radius pie and also use border , fill properties to customize the point. dataLabel is used to represent individual data and its value.

app.vue

<template>
    <div id="app">
        <ejs-accumulationchart id="container" ref="pie" style='display:block;' :legendSettings="legendSettings" :tooltip="tooltip" :enableAnimation='enableAnimation' :enableSmartLabels='enableSmartLabels' >
            <e-accumulation-series-collection>
                <e-accumulation-series  :dataSource='data' xName='x' yName='y' :radius='radius' innerRadius="20%" :dataLabel="dataLabel"> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, AccumulationDataLabel, PieSeries } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      data:[
        { x: 'Argentina', y: 505370, r: '100' },
        { x: 'Belgium', y: 551500, r: '118.7' },
        { x: 'Cuba', y: 312685, r: '124.6' },
        { x: 'Dominican Republic', y: 350000, r: '137.5' },
        { x: 'Egypt', y: 301000, r: '150.8' },
        { x: 'Kazakhstan', y: 300000, r: '155.5' },
        { x: 'Somalia', y: 357022, r: '160.6' }
      ],
     radius: 'r',
     legendSettings: { visible: true },
     dataLabel: { visible: true, position: 'Outside', name: 'x'},
     tooltip: {
        enable: true, header: '<b>${point.x}</b>', format: 'Composition: <b>${point.y}</b>'
     },
     enableAnimation: true,
     enableSmartLabels: true
    };
  },
  provide: {
     accumulationchart: [PieSeries, AccumulationDataLabel]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Doughnut Chart

To achieve a doughnut in pie series, customize the innerRadius property of the series. By setting value greater than 0%, a doughnut will appear. The innerRadius property takes value from 0% to 100% of the pie radius.

app.vue

<template>
    <div id="app">
         <ejs-accumulationchart id="container">
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' xName='x' yName='y' innerRadius='40%'> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, PieSeries } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [
           { x: 'Jan', y: 3, fill: '#498fff', text:'January' }, { x: 'Feb', y: 3.5, fill: '#ffa060', text: 'February' },
           { x: 'Mar', y: 7, fill: '#ff68b6', text: 'March' }, { x: 'Apr', y: 13.5, fill: '#81e2a1', text: 'April' }
            ]
        };
  },
  provide: {
     accumulationchart: [PieSeries]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Start and End angles

You can customize the start and end angle of the pie series using the startAngle and endAngle properties. The default value of startAngle is 0 degree, and endAngle is 360 degrees. By customizing this, you can achieve a semi pie series.

app.vue

<template>
    <div id="app">
         <ejs-accumulationchart id="container">
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' xName='x' yName='y' startAngle=270 endAngle=90> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, PieSeries } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [
           { x: 'Jan', y: 3, fill: '#498fff', text:'January' }, { x: 'Feb', y: 3.5, fill: '#ffa060', text: 'February' },
           { x: 'Mar', y: 7, fill: '#ff68b6', text: 'March' }, { x: 'Apr', y: 13.5, fill: '#81e2a1', text: 'April' }
            ]
        };
  },
  provide: {
     accumulationchart: [PieSeries]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Color and Text Mapping

The fill color and the text in the data source can be mapped to the chart using pointColorMapping in series and name in datalabel respectively.

app.vue

<template>
    <div id="app">
         <ejs-accumulationchart id="container">
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='seriesData' xName='x' yName='y' :dataLabel='datalabel'  :pointColorMapping=' pointColorMapping'> </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
</template>
<script>
import Vue from "vue";
import { AccumulationChartPlugin, PieSeries, AccumulationDataLabel } from "@syncfusion/ej2-vue-charts";

Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      seriesData: [
                { x: 'Jan', y: 3, fill: '#498fff', text:'January' }, { x: 'Feb', y: 3.5, fill: '#ffa060', text: 'February' },
                { x: 'Mar', y: 7, fill: '#ff68b6', text: 'March' }, { x: 'Apr', y: 13.5, fill: '#81e2a1', text: 'April' }
            ],
            datalabel: { visible: true, name: 'text' },
            pointColorMapping: 'fill'
        };
  },
  provide: {
     accumulationchart: [PieSeries, AccumulationDataLabel]
  }
};
</script>
<style>
 #container {
     height: 350px;
 }
</style>

Multi-level pie chart

You can achieve a multi-level drill down in pie and doughnut charts using pointClick event. If user clicks any point in the chart, that corresponding data will be shown in the next level and so on based on point clicked.

You can also achieve drill-up (back to the initial state) by using chartMouseClick event. In below sample, you can drill-up by clicking back button in the center of the chart.

app.vue

<template>
    <div id="app">
    <div>
        <div id="link">
            <a id="category" @click="onClick" style="visibility:hidden; display:inline-block">Sales by Category</a>
            <p style="visibility:hidden; display:inline-block" id="symbol"> >> </p>
            <p id="text" style="display:inline-block;"></p>
        </div>
        <button type="button" id="back" style="visibility: hidden;" @click="onClick">Back</button>
        <ejs-accumulationchart ref="pie" id="container" style='display:block;' :legendSettings="legendSettings" :enableSmartLabels='enableSmartLabels' :title="title" :textRender="onTextRender" :chartMouseClick="onChartMouseClick">
            <e-accumulation-series-collection>
                <e-accumulation-series :dataSource='data' xName='x' yName='y' :startAngle="startAngle" :endAngle="endAngle" :innerRadius="innerRadius" radius="70%" :dataLabel="dataLabel" :explode="isExplode" explodeOffset='10%' :explodeIndex='explodeIndex'>
                </e-accumulation-series>
            </e-accumulation-series-collection>
        </ejs-accumulationchart>
    </div>
    </div>
</template>
<script>
import Vue from "vue";
import { extend } from '@syncfusion/ej2-base';
import { getElement, indexFinder, AccumulationLegend, PieSeries, AccumulationTooltip, AccumulationDataLabel, AccumulationChartPlugin } from "@syncfusion/ej2-vue-charts";
Vue.use(AccumulationChartPlugin);

export default {
  data() {
    return {
      innerRadius: '0%',
    innerChart: false,
    enableSmartLabels: false,
    initialContent: null,
    data: [
        { x: 'SUV', y: 25 }, { x: 'Car', y: 37 }, { x: 'Pickup', y: 15 },
        { x: 'Minivan', y: 23 }
    ],
    suvs: [{ x: 'Toyota', y: 8 }, { x: 'Ford', y: 12 }, { x: 'GM', y: 17 }, { x: 'Renault', y: 6 }, { x: 'Fiat', y: 3 },
    { x: 'Hyundai', y: 16 }, { x: 'Honda', y: 8 }, { x: 'Maruthi', y: 10 }, { x: 'BMW', y: 20 }],

    cars: [{ x: 'Toyota', y: 7 }, { x: 'Chrysler', y: 12 }, { x: 'Nissan', y: 9 }, { x: 'Ford', y: 15 },
    { x: 'Tata', y: 10 },
    { x: 'Mahindra', y: 7 }, { x: 'Renault', y: 8 }, { x: 'Skoda', y: 5 }, { x: 'Volkswagen', y: 15 }, { x: 'Fiat', y: 3 }],

    pickups: [{ x: 'Nissan', y: 9 }, { x: 'Chrysler', y: 4 }, { x: 'Ford', y: 7 }, { x: 'Toyota', y: 20 },
    { x: 'Suzuki', y: 13 }, { x: 'Lada', y: 12 }, { x: 'Bentley', y: 6 }, { x: 'Volvo', y: 10 }, { x: 'Audi', y: 19 }],

    minivans: [{ x: 'Hummer', y: 11 }, { x: 'Ford', y: 5 }, { x: 'GM', y: 12 }, { x: 'Chrysler', y: 3 },
    { x: 'Jaguar', y: 9 },
    { x: 'Fiat', y: 8 }, { x: 'Honda', y: 15 }, { x: 'Hyundai', y: 4 }, { x: 'Scion', y: 11 }, { x: 'Toyota', y: 17 }],

    legendSettings: {
        visible: false,
    },
    dataLabel: {
        visible: true, position: 'Inside', connectorStyle: { type: 'Curve', length: '5%' }, font: { size: '14px', color: 'white' }
    },
    startAngle: 0,
    explodeIndex: 2,
    isExplode: false,
    endAngle: 360,
    title: 'Automobile Sales by Category'
    }
  },
  provide: {
     accumulationchart: [AccumulationLegend, PieSeries, AccumulationTooltip, AccumulationDataLabel]
  },
   methods: {
    onTextRender: function (args) {
        args.text = args.point.x + ' ' + args.point.y + ' %';
    },
    onChartMouseClick: function (args) {
        let index = indexFinder(args.target);
        this.isExplode = false;
        if (document.getElementById('container_Series_' + index.series + '_Point_' + index.point) && !this.innerChart) {
            this.innerRadius = '30%';
            switch (index.point) {
                case 0:
                    this.data = this.suvs;
                    this.title = 'Automobile Sales in the SUV Segment';
                    document.getElementById('text').innerHTML = 'SUV';
                    break;
                case 1:
                    this.data = this.cars;
                    this.title = 'Automobile Sales in the Car Segment';
                    document.getElementById('text').innerHTML = 'Car';
                    break;
                case 2:
                    this.data = this.pickups;
                    this.title = 'Automobile Sales in the Pickup Segment';
                    document.getElementById('text').innerHTML = 'Pickup';
                    break;
                case 3:
                    this.data = this.minivans;
                    this.title = 'Automobile Sales in the Minivan Segment';
                    document.getElementById('text').innerHTML = 'Minivan';
                    break;
            }
            let dataLabel = extend({}, this.dataLabel);
            dataLabel.position = 'Outside';
            dataLabel.font.color = 'black';
            this.dataLabel = dataLabel;
            let legendSettings = this.legendSettings;
            legendSettings.visible = false;
            this.legendSettings = legendSettings;
            this.enableSmartLabels = true;
            document.getElementById('category').style.visibility = 'visible';
            document.getElementById('symbol').style.visibility = 'visible';
            document.getElementById('text').style.visibility = 'visible';
            this.innerChart = true;
        }
        if (args.target.indexOf('back') > -1) {
            this.data = [{ x: 'SUV', y: 25 }, { x: 'Car', y: 37 }, { x: 'Pickup', y: 15 }, { x: 'Minivan', y: 23 }]
            this.isExplode = false;
            let dataLabel = extend({}, this.dataLabel);
            dataLabel.position = 'Inside';
            dataLabel.font.color = 'white';
            this.dataLabel = dataLabel;
            let legendSettings = this.legendSettings;
            legendSettings.visible = false;
            this.legendSettings = legendSettings;
            this.enableSmartLabels = false;
            this.innerRadius = '0%';
            getElement('category').style.visibility = 'hidden';
            document.getElementById('symbol').style.visibility = 'hidden';
            document.getElementById('text').style.visibility = 'hidden';
            this.innerChart = false;
        }
    },
    onClick: function (e) {
        this.isExplode = false;
        this.data = [{ x: 'SUV', y: 25 }, { x: 'Car', y: 37 }, { x: 'Pickup', y: 15 }, { x: 'Minivan', y: 23 }]
        let dataLabel = extend({}, this.dataLabel);
        dataLabel.position = 'Inside';
        dataLabel.font.color = 'white';
        this.dataLabel = dataLabel;
        let legendSettings = this.legendSettings;
        legendSettings.visible = false;
        this.legendSettings = legendSettings;
        this.enableSmartLabels = false;
        this.innerRadius = '0%';
        getElement('category').style.visibility = 'hidden';
        document.getElementById('symbol').style.visibility = 'hidden';
        document.getElementById('text').style.visibility = 'hidden';
        e.target.style.visibility = 'hidden';
        document.getElementById('symbol').style.visibility = 'hidden';
        document.getElementById('text').style.visibility = 'hidden';
        this.innerChart = false;
    },
  },
    updated: function() {
      this.$nextTick(function() {
        this.$refs.pie.ej2Instances.refresh();
      });
    }
  };

</script>

<style scoped>
#category:hover {
    cursor: pointer;
}
</style>