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Grouping in Angular Accumulation Chart component

21 Dec 2022 / 4 minutes to read

You can club/group few points of the series based on groupTo property. For example, if the club value is 11, then the points with value less than 11 is grouped together and will be showed as a single point with label others. The property also takes value in percentage (percentage of total data points value).

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import { Component, OnInit } from '@angular/core';
import { IAccTextRenderEventArgs, IAccPointRenderEventArgs } from '@syncfusion/ej2-charts';

@Component({
    selector: 'app-container',
    template:
    `<ejs-accumulationchart id="chart-container" >
        <e-accumulation-series-collection>
            <e-accumulation-series [dataSource]='piedata' xName='x' yName='y' groupTo='11' [dataLabel]='datalabel'></e-accumulation-series>
        </e-accumulation-series-collection>
    </ejs-accumulationchart>`
})
export class AppComponent implements OnInit {
    public piedata: Object[];
    public datalabel: Object;
    ngOnInit(): void {
        this.datalabel = { visible: true, name: 'text', position: 'Outside' };
        this.piedata = [
                { x: 'Jan', y: 3, text: 'Jan: 3' }, { x: 'Feb', y: 3.5, text: 'Feb: 3.5' },
                { x: 'Mar', y: 7, text: 'Mar: 7' }, { x: 'Apr', y: 13.5, text: 'Apr: 13.5' },
                { x: 'May', y: 19, text: 'May: 19' }, { x: 'Jun', y: 23.5, text: 'Jun: 23.5' },
                { x: 'Jul', y: 26, text: 'Jul: 26' }, { x: 'Aug', y: 25, text: 'Aug: 25' },
                { x: 'Sep', y: 21, text: 'Sep: 21' }, { x: 'Oct', y: 15, text: 'Oct: 15' }];
    }

}
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import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { AccumulationChartModule } from '@syncfusion/ej2-angular-charts';
import { PieSeriesService, AccumulationDataLabelService } from '@syncfusion/ej2-angular-charts';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, AccumulationChartModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [PieSeriesService, AccumulationDataLabelService]
})
export class AppModule { }
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import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Broken slice

You can visualize all points available in club/group points by clicking on the grouped point. For example, if 5 points are grouped together it will be showed as a single slice with label others. If we click on others slice it will explode and broke into 5 seperate slices.

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import { Component, OnInit } from '@angular/core';
import { IAccTextRenderEventArgs, IAccPointRenderEventArgs } from '@syncfusion/ej2-charts';

@Component({
    selector: 'app-container',
    template:
    `<ejs-accumulationchart id="chart-container" >
        <e-accumulation-series-collection>
            <e-accumulation-series [dataSource]='piedata' xName='x' yName='y' groupTo='11' [dataLabel]='datalabel' [explode]='explode' [explodeOffset]='explodeOffset'></e-accumulation-series>
        </e-accumulation-series-collection>
    </ejs-accumulationchart>`
})
export class AppComponent implements OnInit {
    public piedata: Object[];
    public datalabel: Object;
    public explode: boolean;
    public explodeOffset: string;
    ngOnInit(): void {
        this.datalabel = { visible: true, name: 'text', position: 'Outside' };
        this.piedata = [
               { x: 'Jan', y: 3, text: 'Jan: 3' }, { x: 'Feb', y: 3.5, text: 'Feb: 3.5' },
                { x: 'Mar', y: 7, text: 'Mar: 7' }, { x: 'Apr', y: 13.5, text: 'Apr: 13.5' },
                { x: 'May', y: 19, text: 'May: 19' }, { x: 'Jun', y: 23.5, text: 'Jun: 23.5' },
                { x: 'Jul', y: 26, text: 'Jul: 26' }, { x: 'Aug', y: 25, text: 'Aug: 25' },
                { x: 'Sep', y: 21, text: 'Sep: 21' }, { x: 'Oct', y: 15, text: 'Oct: 15' },
                { x: 'Nov', y: 9, text: 'Nov: 9' }, { x: 'Dec', y: 3.5, text: 'Dec: 3.5' }
                ];
        this.explode = true;
        this.explodeOffset = '10%';
    }

}
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import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { AccumulationChartModule } from '@syncfusion/ej2-angular-charts';
import { PieSeriesService, AccumulationDataLabelService } from '@syncfusion/ej2-angular-charts';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, AccumulationChartModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [PieSeriesService, AccumulationDataLabelService]
})
export class AppModule { }
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import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Group Mode

Slice can also be grouped based on number of points by specifying the groupMode to Point. For example, if the group to value is 11, accumulation chart will show 1st 11 points and will group remaining entries in the collection as a single point.

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import { Component, OnInit } from '@angular/core';
import { IAccTextRenderEventArgs, IAccPointRenderEventArgs } from '@syncfusion/ej2-charts';
import { groupData } from 'datasource.ts';
@Component({
    selector: 'app-container',
    template:
    `<ejs-accumulationchart id="chart-container" (textRender)="onTextRender($event)" (pointRender)="onPointRender($event)">
        <e-accumulation-series-collection>
            <e-accumulation-series [dataSource]='piedata' xName='x' yName='y' [dataLabel]='datalabel' groupTo='4' groupMode='Point'></e-accumulation-series>
        </e-accumulation-series-collection>
    </ejs-accumulationchart>`
})
export class AppComponent implements OnInit {
    public piedata: Object[];
    public datalabel: Object;
    public onTextRender: Function;
    public onPointRender: Function;
    ngOnInit(): void {
        this.datalabel = { visible: true, name: 'text', position: 'Outside' };
        this.onTextRender = (args: IAccTextRenderEventArgs): void {
            if (args.text.indexOf('Others') > -1) {
                args.color = 'red';
                args.border.width = 1;
            }
        }
        this.onPointRender = (args: IAccPointRenderEventArgs): void {
            if ((args.point.x as string).indexOf('Others') > -1) {
                args.fill = '#D3D3D3';
            }
        }
        this.piedata = groupData;
    }

}
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import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { AccumulationChartModule } from '@syncfusion/ej2-angular-charts';
import { PieSeriesService, AccumulationDataLabelService } from '@syncfusion/ej2-angular-charts';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, AccumulationChartModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [PieSeriesService, AccumulationDataLabelService]
})
export class AppModule { }
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import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Customization

You can customize the grouped point and its data label using pointRender and textRender event.

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import { Component, OnInit } from '@angular/core';
import { IAccTextRenderEventArgs, IAccPointRenderEventArgs } from '@syncfusion/ej2-charts';
import { groupData } from 'datasource.ts';
@Component({
    selector: 'app-container',
    template:
    `<ejs-accumulationchart id="chart-container" (textRender)="onTextRender($event)" (pointRender)="onPointRender($event)">
        <e-accumulation-series-collection>
            <e-accumulation-series [dataSource]='piedata' xName='x' yName='y' groupTo='11' [dataLabel]='datalabel'></e-accumulation-series>
        </e-accumulation-series-collection>
    </ejs-accumulationchart>`
})
export class AppComponent implements OnInit {
    public piedata: Object[];
    public datalabel: Object;
    public onTextRender: Function;
    public onPointRender: Function;
    ngOnInit(): void {
        this.datalabel = { visible: true, name: 'text', position: 'Outside' };
        this.onTextRender = (args: IAccTextRenderEventArgs): void {
            if (args.text.indexOf('Others') > -1) {
                args.color = 'red';
                args.border.width = 1;
            }
        }
        this.onPointRender = (args: IAccPointRenderEventArgs): void {
            if ((args.point.x as string).indexOf('Others') > -1) {
                args.fill = '#D3D3D3';
            }
        }
        this.piedata = groupData;
    }

}
Copied to clipboard
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { AccumulationChartModule } from '@syncfusion/ej2-angular-charts';
import { PieSeriesService, AccumulationDataLabelService } from '@syncfusion/ej2-angular-charts';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, AccumulationChartModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [PieSeriesService, AccumulationDataLabelService]
})
export class AppModule { }
Copied to clipboard
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);
Accumulation Chart / Data Label
Accumulation Chart / Empty Points