Date time axis in Angular Chart component

27 Apr 202422 minutes to read

DateTime Axis

 Date time axis uses date time scale and displays the date time values as axis labels in the specified format.

To known about dateTime axis, you can check on this video:

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService} from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService],
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' name='Sales'></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 = [
                 { x: new Date(2000, 6, 11), y: 10 }, { x: new Date(2002, 3, 7), y: 30 },
                 { x: new Date(2004, 3, 6), y: 15 }, { x: new Date(2006, 3, 30), y: 65 },
                 { x: new Date(2008, 3, 8), y: 90 }, { x: new Date(2010, 3, 8), y: 85 }
        ];
        this.primaryXAxis = {
            valueType: 'DateTime',
            title: 'Sales Across Years',
            labelFormat: 'yMMM'
        };
        this.primaryYAxis = {
           title: 'Sales Amount in millions(USD)'
        };
        this.title = 'Average Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Note: To use datetime axis, we need to inject DateTimeService into the @NgModule.providers and set the valueType of axis to DateTime.

DateTimeCategory Axis

Date-time category axis is used to display the date-time values with non-linear intervals. For example, the business days alone have been depicted in a week here.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService} from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService],
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' name='Sales'></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 = data;
        this.primaryXAxis = {
              valueType: 'DateTimeCategory'
        };
        this.primaryYAxis = {
           title: 'Sales Amount in millions(USD)'
        };
        this.title = 'Average Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Note: To use datetime axis, we need to inject DateTimeCategoryService into the @NgModule.providers and set the valueType of axis to DateTimeCategory.

Range

Range for an axis, will be calculated automatically based on the provided data, you can also customize the range of the axis using minimum, maximum and interval property of the axis.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService} from '@syncfusion/ej2-angular-charts'



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

@Component({
imports: [
         ChartModule
    ],

providers: [ DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService],
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' name='Sales'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public chartData?: Object[];
    public title?: string;
    primaryYAxis:any;
    ngOnInit(): void {
        this.chartData = dateData;
        this.primaryXAxis = {
            valueType: 'DateTime',
            title: 'Sales Across Years',
            labelFormat: 'yMMM',
            minimum: new Date(2000, 6, 1),
            maximum: new Date(2010, 6, 1)
        };
        this.title = 'Average Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Interval Customization

Date time intervals can be customized by using the interval and intervalType properties of the axis.
For example, when you set interval as 2 and intervalType as years, it considers 2 years as interval.
DateTime axis supports following interval types,

  • Auto
  • Years
  • Months
  • Days
  • Hours
  • Minutes
  • Seconds
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService} from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';
import { dateData } from './datasource';
@Component({
imports: [
         ChartModule
    ],

providers: [ DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService],
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' name='Sales'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public chartData?: Object[];
    public title?: string;
    primaryYAxis: any;
    ngOnInit(): void {
        this.chartData = dateData;
        this.primaryXAxis = {
            valueType: 'DateTime',
            intervalType: 'Years'
        };
        this.title = 'Average Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Applying Padding to the Range

Padding can be applied to the minimum and maximum extremes of the range by using the rangePadding property. Date time axis supports the following types of padding,

  • None
  • Round
  • Additional

DateTime - None

When the rangePadding is set to None, minimum and maximum of the axis is based on the data.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService} from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';
import { dateData } from './datasource';
@Component({
imports: [
         ChartModule
    ],

providers: [ DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService],
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' name='Sales'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public chartData?: Object[];
    public title?: string;
    primaryYAxis: any;
    ngOnInit(): void {
        this.chartData = dateData;
        this.primaryXAxis = {
            valueType: 'DateTime',
            title: 'Sales Across Years',
            labelFormat: 'yMMM',
            rangePadding: 'None'
        };
        this.title = 'Average Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

DateTime - Round

When the rangePadding is set to Round, minimum and maximum will be rounded to the nearest possible value divisible by interval. For example, when the minimum is 15th Jan, interval is 1 and the interval type is ‘month’, then the axis minimum will be Jan 1st.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService} from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';
import { dateData } from './datasource';
@Component({
imports: [
         ChartModule
    ],

providers: [ DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService],
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' name='Sales'></e-series>
        </e-series-collection>
    </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public chartData?: Object[];
    public title?: string;
    primaryYAxis: any;
    ngOnInit(): void {
        this.chartData = dateData;
        this.primaryXAxis = {
            valueType: 'DateTime',
            title: 'Sales Across Years',
            labelFormat: 'yMMM',
            rangePadding: 'Round'
        };
        this.title = 'Average Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

DateTime - Additional

When the rangePadding is set to Additional, interval of an axis will be padded to the minimum and maximum of the axis.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService} from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';
import { dateData } from './datasource';
@Component({
imports: [
         ChartModule
    ],

providers: [ DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService],
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' name='Sales'></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 = dateData;
        this.primaryXAxis = {
            valueType: 'DateTime',
            title: 'Sales Across Years',
            labelFormat: 'yMMM',
            rangePadding: 'Additional'
        };
        this.title = 'Average Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Label Format

You can format and parse the date to all globalize format using labelFormat property in an axis.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService} from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';
import { dateData } from './datasource';
@Component({
imports: [
         ChartModule
    ],

providers: [ DateTimeService, LineSeriesService, DateTimeCategoryService, StripLineService],
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' name='Sales'></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 = dateData;
        this.primaryXAxis = {
            valueType: 'DateTime',
            title: 'Sales Across Years',
            labelFormat: 'yMd'
        };
        this.primaryYAxis = {
           title: 'Sales Amount in millions(USD)'
        };
        this.title = 'Average Sales Comparison';
    }

}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

The following table describes the result of applying some common date time formats to the labelFormat property

Label Value Label Format Property Value Result Description
new Date(2000, 03, 10) EEEE Monday The Date is displayed in day format
new Date(2000, 03, 10) yMd 04/10/2000 The Date is displayed in month/date/year format
new Date(2000, 03, 10) MMM Apr The Shorthand month for the date is displayed
new Date(2000, 03, 10) hm 12:00 AM Time of the date value is displayed as label
new Date(2000, 03, 10) hms 12:00:00 AM The Label is displayed in hours:minutes:seconds format