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Line Chart in Angular Charts

3 Feb 202624 minutes to read

Line

To render a line series in your chart, you need to follow a few steps to configure it correctly. Here’s a concise guide on how to do this:

  1. Set the series type: Define the series type as Line in your chart configuration. This indicates that the data should be represented as a line chart, which is ideal for visualizing trends over time or across categories.

  2. Inject the LineSeries module: Use the @NgModule.providers method to inject the LineSeriesService module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering line series are available in your chart.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='month' yName='sales'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1,
            valueType: 'Category',
        };
        this.primaryYAxis =
        {
            title: 'Sales',
        },
        this.title = 'Monthly Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
     { month: 'Jan', sales: 35 },
     { month: 'Feb', sales: 28 },
     { month: 'Mar', sales: 34 },
     { month: 'Apr', sales: 32 },
     { month: 'May', sales: 40 },
     { month: 'Jun', sales: 32 },
     { month: 'Jul', sales: 35 },
     { month: 'Aug', sales: 55 },
     { month: 'Sep', sales: 38 },
     { month: 'Oct', sales: 30 },
     { month: 'Nov', sales: 25 },
     { month: 'Dec', sales: 32 }
 ];

Binding data with series

You can bind data to the chart using the dataSource property within the series configuration. This allows you to connect a JSON dataset or remote data to your chart. To display the data correctly, map the fields from the data to the chart series xName and yName properties.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='x' yName='y'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1
        };
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.title = 'Efficiency of oil-fired power production';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
             { x: 2005, y: 28 }, 
             { x: 2006, y: 25 },
             { x: 2007, y: 26 }, 
             { x: 2008, y: 27 },
             { x: 2009, y: 32 }, 
             { x: 2010, y: 35 }, 
             { x: 2011, y: 30 }
        ];

Series customization

The following properties can be used to customize the line series.

Fill

The fill property determines the color applied to the series.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis' [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='month' yName='sales' fill='red'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public chartData?: Object[];
    public title?: string;
    public primaryYAxis?: Object;
    ngOnInit(): void {
        this.primaryXAxis = {
            valueType: 'Category'
        };
        this.chartData = lineData;
        this.title = 'Monthly Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

The fill property can be used to apply a gradient color to the line series. By configuring this property with gradient values, you can create a visually appealing effect in which the color transitions smoothly from one shade to another.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `
      <svg>
        <defs>
            <linearGradient id="gradient">
                <stop offset="0%" style="stop-color:#FF0000;stop-opacity:5" />
                <stop offset="70%" style="stop-color:#00FF00;stop-opacity:5" />
            </linearGradient>
        </defs>
    </svg>
    <ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='x' yName='y' [fill]= "'url(#gradient)'"></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1,
            valueType: 'Category'
        };
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.title = 'Efficiency of oil-fired power production';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
             { x: 2005, y: 28 }, 
             { x: 2006, y: 25 },
             { x: 2007, y: 26 }, 
             { x: 2008, y: 27 },
             { x: 2009, y: 32 }, 
             { x: 2010, y: 35 }, 
             { x: 2011, y: 30 }
        ];

Opacity

The opacity property controls the transparency of the fill and affects how the series blends with background or overlapping series.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='x' yName='y' opacity='0.5'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1, valueType: 'Category'
        };
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.title = 'Efficiency of oil-fired power production';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
             { x: 2005, y: 28 }, 
             { x: 2006, y: 25 },
             { x: 2007, y: 26 }, 
             { x: 2008, y: 27 },
             { x: 2009, y: 32 }, 
             { x: 2010, y: 35 }, 
             { x: 2011, y: 30 }
        ];

Dash array

The dashArray property determines the pattern of dashes and gaps in the series.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='x' yName='y' dashArray='5,5'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1, valueType: 'Category'
        };
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.title = 'Efficiency of oil-fired power production';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
             { x: 2005, y: 28 }, 
             { x: 2006, y: 25 },
             { x: 2007, y: 26 }, 
             { x: 2008, y: 27 },
             { x: 2009, y: 32 }, 
             { x: 2010, y: 35 }, 
             { x: 2011, y: 30 }
        ];

Width

The width property specifies the stroke width applied to the series.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='x' yName='y' width='4'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1, valueType: 'Category'
        };
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.title = 'Efficiency of oil-fired power production';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
             { x: 2005, y: 28 }, 
             { x: 2006, y: 25 },
             { x: 2007, y: 26 }, 
             { x: 2008, y: 27 },
             { x: 2009, y: 32 }, 
             { x: 2010, y: 35 }, 
             { x: 2011, y: 30 }
        ];

Multicolored Line

To render a multicolored line series in your chart, you need to follow a few steps to configure it correctly. Here’s a concise guide on how to do this:

  1. Set the series type: Define the series type as MultiColoredLine in your chart configuration. This specifies that the series should be rendered as a multicolored line chart, with different segments of the line having distinct colors.

  2. Inject the MultiColoredLineSeries module: Use the @NgModule.providers method to inject the MultiColoredLineSeriesService module in your chart. This step is essential, as it ensures that the necessary functionalities for rendering line series are available in your chart.

  3. Map individual colors: Utilize the pointColorMapping property to assign individual colors to each data point. This allows you to customize the color of each segment of the line based on your data.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis' [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='MultiColoredLine' xName='x' yName='y' name='London' width=2 [marker]='marker'
            pointColorMapping= 'color'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
    public marker?: Object;
    primaryXAxis: any;
    primaryYAxis: any;
    ngOnInit(): void {
        this.chartData = splineData;
        this.marker = { visible: true, width: 10, height: 10 };
        this.title = 'Climate Graph-2012';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let splineData: Object[] = [
    { x: 2005, y: 28, color: 'red' }, { x: 2006, y: 25, color: 'green' },
    { x: 2007, y: 26, color: '#ff0097' }, { x: 2008, y: 27, color: 'crimson' },
    { x: 2009, y: 32, color: 'blue' }, { x: 2010, y: 35, color: 'darkorange' }
];

Empty points

Data points with null or undefined values are considered empty. Empty data points are ignored and not plotted on the chart.

Mode

Use the mode property to control handling of empty points. Available modes: Gap, Drop, Zero, Average. The default mode is Gap.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='x' yName='y' [emptyPointSettings]='emptyPointSettings'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
      public emptyPointSettings?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1, valueType: 'Category'
        };
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.title = 'Efficiency of oil-fired power production';
        this.emptyPointSettings = {
            mode: 'Zero'
        }
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
             { x: 2005, y: 28 }, 
             { x: 2006, y: null },
             { x: 2007, y: 26 }, 
             { x: 2008, y: 27 },
             { x: 2009, y: undefined }, 
             { x: 2010, y: 35 }, 
             { x: 2011, y: 30 }
        ];

Fill

Use the fill property to set the fill color for empty points.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='x' yName='y' [marker]='marker' [emptyPointSettings]='emptyPointSettings'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
      public emptyPointSettings?: Object;
      public marker?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1, valueType: 'Category'
        };
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.marker = {
            visible: true, width: 7, height: 7, isFilled: true
        };
        this.title = 'Efficiency of oil-fired power production';
        this.emptyPointSettings = {
            mode: 'Zero',
            fill: 'red'
        }
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
             { x: 2005, y: 28 }, 
             { x: 2006, y: null },
             { x: 2007, y: 26 }, 
             { x: 2008, y: 27 },
             { x: 2009, y: undefined }, 
             { x: 2010, y: 35 }, 
             { x: 2011, y: 30 }
        ];

Border

Use the border property to customize the border width and color for empty points.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='x' yName='y' [marker]='marker' [emptyPointSettings]='emptyPointSettings'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
      public emptyPointSettings?: Object;
      public marker?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1, valueType: 'Category'
        };
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.marker = {
            visible: true, width: 7, height: 7, isFilled: true
        };
        this.title = 'Efficiency of oil-fired power production';
        this.emptyPointSettings = {
            mode: 'Zero',
            fill: 'red',
            border: { color: 'yellow', width: 2 }
        }
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
             { x: 2005, y: 28 }, 
             { x: 2006, y: null },
             { x: 2007, y: 26 }, 
             { x: 2008, y: 27 },
             { x: 2009, y: undefined }, 
             { x: 2010, y: 35 }, 
             { x: 2011, y: 30 }
        ];

Events

Series render

The seriesRender event enables modification of series properties (for example, data, fill, or name) immediately before rendering. Use this event to adjust series appearance or to dynamically swap data sources.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { ISeriesRenderEventArgs } from '@syncfusion/ej2-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" (seriesRender)='seriesRender($event)' [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' xName='month' yName='sales'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
      public emptyPointSettings?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1, valueType: 'Category'
        };
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.title = 'Efficiency of oil-fired power production';
    }
    public seriesRender(args: ISeriesRenderEventArgs) {
        args.fill = '#ff6347';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
     { month: 'Jan', sales: 35 },
     { month: 'Feb', sales: 28 },
     { month: 'Mar', sales: 34 },
     { month: 'Apr', sales: 32 },
     { month: 'May', sales: 40 },
     { month: 'Jun', sales: 32 },
     { month: 'Jul', sales: 35 },
     { month: 'Aug', sales: 55 },
     { month: 'Sep', sales: 38 },
     { month: 'Oct', sales: 30 },
     { month: 'Nov', sales: 25 },
     { month: 'Dec', sales: 32 }
 ];

Point render

The pointRender event provides a hook to customize each data point (for example, marker shape, border, or fill) before it is drawn. Use this to apply per-point styling rules or conditional formatting.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { IPointRenderEventArgs } from '@syncfusion/ej2-charts'
import { CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
    SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ CategoryService, LineSeriesService, StepLineSeriesService, SplineSeriesService, StackingLineSeriesService, DateTimeService,
        SplineAreaSeriesService, MultiColoredLineSeriesService, ParetoSeriesService, ColumnSeriesService],
standalone: true,
    selector: 'app-container',
    template: `<ejs-chart id="chart-container" (pointRender)='pointRender($event)' [primaryXAxis]='primaryXAxis'[primaryYAxis]='primaryYAxis'
    [title]='title'>
        <e-series-collection>
            <e-series [dataSource]='chartData' type='Line' [marker]='marker' xName='month' yName='sales'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public chartData?: Object[];
    public title?: string;
     public primaryXAxis?: Object;
      public primaryYAxis?: Object;
      public marker?: Object;
    ngOnInit(): void {
        this.chartData = lineData;
        this.primaryXAxis = {
            interval: 1, valueType: 'Category'
        };
        this.marker = {visible: true};
        this.primaryYAxis =
        {
            title: 'Expense',
        },
        this.title = 'Efficiency of oil-fired power production';
    }
    public pointRender(args: IPointRenderEventArgs) {
        if (args.point.index % 2 !== 0) {
            args.fill = '#ff6347';
        }
        else {
            args.fill = '#009cb8';
        }
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let lineData: Object[] = [
     { month: 'Jan', sales: 35 },
     { month: 'Feb', sales: 28 },
     { month: 'Mar', sales: 34 },
     { month: 'Apr', sales: 32 },
     { month: 'May', sales: 40 },
     { month: 'Jun', sales: 32 },
     { month: 'Jul', sales: 35 },
     { month: 'Aug', sales: 55 },
     { month: 'Sep', sales: 38 },
     { month: 'Oct', sales: 30 },
     { month: 'Nov', sales: 25 },
     { month: 'Dec', sales: 32 }
 ];

See Also