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Prevent the data label when the data value is 0

To prevent the chart data label when the data value is 0, follow the given steps:

Step 1:

Get the point value and check whether the args.point.y value is zero or not by using the textRender event. If the value is zero, then set the args.cancel to true.

The output will appear as follows,

Source
Preview
app.component.ts
app.module.ts
main.ts
import { Component, OnInit } from '@angular/core';
import { ITextRenderEventArgs } from '@syncfusion/ej2-angular-charts';

@Component({
    selector: 'app-container',
    template:
    `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis' [title]='title' (textRender)='textRender($event)'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='x' yName='y' name='India' width=2 [marker]='marker'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis: Object;
    public chartData: Object[];
    public title: string;
    public marker: Object;
    public primaryYAxis: Object;
    public textRender(args: ITextRenderEventArgs): void {
        if (args.text === '0') {
          args.cancel = args.point.y === 0;
        }
    };
    ngOnInit(): void {
        this.chartData = [
             { x: new Date(2005, 0, 1), y: 21 }, { x: new Date(2006, 0, 1), y: 24 },
             { x: new Date(2007, 0, 1), y: 0 }, { x: new Date(2008, 0, 1), y: 38 },
             { x: new Date(2009, 0, 1), y: 54 }, { x: new Date(2010, 0, 1), y: 57 },
        ];
        this.primaryXAxis = {
           title: 'Year',
           valueType: 'DateTime'
        };
        this.primaryYAxis = {
           title: 'Efficiency',
        };
        this.marker = { visible: true, width: 10, height: 10, dataLabel: { visible: true}};
        this.title = 'Inflation - Consumer Price';
    }

}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ChartModule } from '@syncfusion/ej2-angular-charts';
import { GridModule } from '@syncfusion/ej2-angular-grids';
import { PageService, SortService, FilterService, GroupService } from '@syncfusion/ej2-angular-grids';
import { AccumulationChartModule } from '@syncfusion/ej2-angular-charts';
import { PieSeriesService, AccumulationTooltipService, AccumulationDataLabelService } from '@syncfusion/ej2-angular-charts';
import { LineSeriesService, DateTimeService, DataLabelService,StackingColumnSeriesService,CategoryService, ChartShape,
       StepAreaSeriesService,SplineSeriesService,ScrollBarService, ChartAnnotationService, LegendService, TooltipService, StripLineService,
       SelectionService,ScatterSeriesService,ZoomService
    } from '@syncfusion/ej2-angular-charts';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, ChartModule, AccumulationChartModule, GridModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [ LineSeriesService, DateTimeService, DataLabelService, ZoomService, StackingColumnSeriesService,CategoryService,
               StepAreaSeriesService, SplineSeriesService, ChartAnnotationService, LegendService, TooltipService, StripLineService,
               PieSeriesService, AccumulationTooltipService,ScrollBarService, AccumulationDataLabelService, SelectionService,ScatterSeriesService
               ,PageService]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

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