Data editing in Angular Chart component

27 Sep 20237 minutes to read

Enable Data Editing

We can use the data editing through inject the DataEditingService module. It provides drag and drop support to the rendered points. Now, we can change the location or value of the point based on its y value. To enable the data editing, set the enable property to true in the drag settings of the series. Also, we can set color using fill property and set the data editing minimum and maximum range using minY and maxY properties.

app.component.ts

import { Component, OnInit } from '@angular/core';

@Component({
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis' [primaryYAxis]='primaryYAxis' [title]='title'
            [chartArea]="chartArea" [tooltip]="tooltip">
        <e-series-collection>
            <e-series [dataSource]='columnData' type='Column' xName='x' yName='y' width="2" [marker]="marker" [dragSettings]="dragSettings"></e-series>
            <e-series [dataSource]='lineData' type='Line' xName='x' yName='y' width="2" [marker]="marker" [dragSettings]="dragSettings"></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public columnData?: Object[];
    public lineData?: Object[];
    public title?: string;
    public primaryYAxis?: Object;
    public chartArea?: Object;
    public marker?: Object;
    public dragSettings?: Object;
    public tooltip?: Object;
    ngOnInit(): void {
        this.columnData = [
                 { x: '2005', y: 21 }, { x: '2006', y: 60 },
                 { x: '2007', y: 45 }, { x: '2008', y: 50 },
                { x: '2009', y: 74 }, { x: '2010', y: 65 },
                { x: '2011', y: 85 }
        ];
        this.lineData = [
                 { x: '2005', y: 21 }, { x: '2006', y: 22 },
                    { x: '2007', y: 36 }, { x: '2008', y: 34 },
                    { x: '2009', y: 54 }, { x: '2010', y: 55 },
                    { x: '2011', y: 60 }
        ];
        this.primaryXAxis = {
            valueType: 'Category',
            minimum: -0.5,
            maximum: 6.5,
            labelPlacement: 'OnTicks',
            majorGridLines: { width: 0 },
        };
        this.primaryYAxis = {
           rangePadding: 'None',
            minimum: 0,
            title : 'Sales',
            labelFormat: '{value}%',
            maximum: 100,
            interval: 20,
            lineStyle: { width: 0 },
            majorTickLines: { width: 0 },
            minorTickLines: { width: 0 }
        };
        this.chartArea = {
            border: {
                width: 0
            }
        };
        this.title = 'Inflation - Consumer Price';
        this.marker = {
             visible: true,
             width: 10,
             height: 10
        };
        this.dragSettings = {
            enable: true
        };
        this.tooltip = {
            enable: true
        }
    }

}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ChartModule } from '@syncfusion/ej2-angular-charts';
import { LineSeriesService, ColumnSeriesService, CategoryService, DataEditingService, TooltipService } from '@syncfusion/ej2-angular-charts';
import { LegendService } from '@syncfusion/ej2-angular-charts';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, ChartModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [ LegendService, LineSeriesService, ColumnSeriesService, CategoryService, DataEditingService, TooltipService]
})
export class AppModule { }

main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

import 'zone.js';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);