Spline Range Area in Angular Chart component

13 Dec 202424 minutes to read

Spline Range Area

To render a spline range area 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 SplineRangeArea in your chart configuration. This indicates that the data should be represented as a spline range area chart, which is ideal for visualizing continuous data points as a set of splines that vary between high and low values over intervals of time and across different categories.

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

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' high='high' low='low' name='England'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' high='high1' low='low1' name='India'></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.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.title = 'Monthly Temperature Range'
    }
}
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: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
        { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
        { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
    ];

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, high, and low properties.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' high='high' low='low' name='England'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' high='high1' low='low1' name='India'></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.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.title = 'Monthly Temperature Range'
    }
}
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: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
        { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
        { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
    ];

Series customization

The following properties can be used to customize the spline range area 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, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' high='high' low='low' name='England' fill='red'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' high='high1' low='low1' name='India' fill='blue'></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.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.title = 'Monthly Temperature Range'
    }
}
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: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
        { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
        { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
    ];

Opacity

The opacity property specifies the transparency level of the fill. Adjusting this property allows you to control how opaque or transparent the fill color of the series appears.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' high='high' low='low' name='England' opacity='0.5'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' high='high1' low='low1' name='India' opacity='0.5'></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.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.title = 'Monthly Temperature Range'
    }
}
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: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
        { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
        { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
    ];

Border

Use the border property to customize the width, color and dasharray of the series border.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' high='high' low='low' name='England' [border]='border'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' high='high1' low='low1' name='India' [border]='border'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public chartData?: Object[];
    public title?: string;
    public border?: Object;
    public primaryYAxis?: Object;
    ngOnInit(): void {
        this.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.border = {width:2, color: 'red', dashArray: '5,5'};
        this.title = 'Monthly Temperature Range'
    }
}
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: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
        { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
        { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
    ];

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 define how empty or missing data points are handled in the series. The default mode for empty points is Gap.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' high='high' low='low' name='England' [emptyPointSettings]='emptyPointSettings'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' high='high1' low='low1' name='India' [emptyPointSettings]='emptyPointSettings'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public chartData?: Object[];
    public title?: string;
    public primaryYAxis?: Object;
    public emptyPointSettings1?: Object;
    public emptyPointSettings?: Object;
    ngOnInit(): void {
        this.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.title = 'Monthly Temperature Range'
        this.emptyPointSettings = {
            mode: 'Gap'
        }
    }
}
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: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: null, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: undefined, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

Fill

Use the fill property to customize the fill color of empty points in the series.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' high='high' low='low' name='England' [marker]='marker' [emptyPointSettings]='emptyPointSettings'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' high='high1' low='low1' name='India' [marker]='marker' [emptyPointSettings]='emptyPointSettings'></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 emptyPointSettings1?: Object;
    public emptyPointSettings?: Object;
    ngOnInit(): void {
        this.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.marker= { visible: true};
        this.title = 'Monthly Temperature Range'
        this.emptyPointSettings = {
            mode: 'Average', 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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: null, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: undefined, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

Border

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

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' high='high' low='low' name='England' [marker]='marker' [emptyPointSettings]='emptyPointSettings'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' high='high1' low='low1' name='India' [marker]='marker' [emptyPointSettings]='emptyPointSettings'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public chartData?: Object[];
    public title?: string;
    public primaryYAxis?: Object;
    public marker?: Object;
    public emptyPointSettings1?: Object;
    public emptyPointSettings?: Object;
    ngOnInit(): void {
        this.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.marker = {visible: true};
        this.title = 'Monthly Temperature Range'
        this.emptyPointSettings = {
            mode: 'Average', fill: 'red', border: { width: 2, color: 'green' }
        }
    }
}
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: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: null, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: undefined, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

Events

Series render

The seriesRender event allows you to customize series properties, such as data, fill, and name, before they are rendered on the chart.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { ISeriesRenderEventArgs } from '@syncfusion/ej2-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' high='high' low='low' name='England'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' high='high1' low='low1' name='India'></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.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.title = 'Monthly Temperature Range'
    }
    public seriesRender(args: ISeriesRenderEventArgs) {
        if (args.series.index === 0) {
            args.fill = '#ff4251';
        }
        else if (args.series.index === 1) {
            args.fill = '#4C4C4C';
        }
    }
}
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: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
        { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
        { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
    ];

Point render

The pointRender event allows you to customize each data point before it is rendered on the chart.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule, ChartAllModule } from '@syncfusion/ej2-angular-charts'
import { IPointRenderEventArgs } from '@syncfusion/ej2-charts'
import { AreaSeriesService, RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService, 
    DateTimeService, CategoryService, MultiColoredAreaSeriesService, StackingStepAreaSeriesService, SplineRangeAreaSeriesService } from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule, ChartAllModule
    ],

providers: [ AreaSeriesService , RangeAreaSeriesService, StepAreaSeriesService, StackingAreaSeriesService,
               DateTimeService, CategoryService, MultiColoredAreaSeriesService,StackingStepAreaSeriesService,SplineRangeAreaSeriesService],
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='SplineRangeArea' xName='x' [marker]='marker' high='high' low='low' name='England'></e-series>
            <e-series [dataSource]='chartData' type='SplineRangeArea' xName='x' [marker]='marker' high='high1' low='low1' name='India'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public chartData?: Object[];
    public title?: string;
    public primaryYAxis?: Object;
    public marker?: Object;
    ngOnInit(): void {
        this.chartData = splinedata;
        this.primaryXAxis = {
           valueType: 'Category',
            edgeLabelPlacement: 'Shift',
            majorGridLines: { width: 0 }
        };
        this.primaryYAxis = {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
        };
        this.marker = {visible: true};
        this.title = 'Monthly Temperature Range'
    }
    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 splinedata: Object[] = [
        { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
        { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
        { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
        { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
        { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
        { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
    ];

See Also