Marker in Angular Sparkline component

23 Sep 20237 minutes to read

This section explains how to add markers to the sparkline.

Adding marker to the sparkline

To add marker to the sparkline, specify the visible of markerSettings as following values. The visible will accept multiple values too.

• All - Enables markers for all points.
• Start - Enables marker for the start point.
• End - Enables marker for the end point.
• High - Enables marker for the high point.
• Low - Enables marker for the low point.
• Negative - Enables markers for the negative points.

The following code example shows enabling markers for all points.

[app.component.ts]

app.component.ts

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

@Component({
    selector: 'app-container',
    template: `<ejs-sparkline id='container' width='350px' height='200px' [markerSettings] ='markerSettings' [axisSettings] ='axisSettings'  [dataSource]="data" >
    </ejs-sparkline>`
})
export class AppComponent {
    public data: object[] = [0, 6, 4, 1, 3, 2, 5] as any;
    public markerSettings: object= {
        visible: ['All']
    };
    public axisSettings: object ={
        minX: -1, maxX: 7, maxY: 7, minY: -1
    };
};

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { SparklineModule, SparklineTooltipService } from '@syncfusion/ej2-angular-charts';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, SparklineModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
	providers: [SparklineTooltipService]
})
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);

Adding marker to special point

In sparkline, markers can be enabled for particular points such as the start, end, low, high, or negative. The following code examples shows enabling markers for the high and low points.

[app.component.ts]

app.component.ts

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

@Component({
    selector: 'app-container',
    template: `<ejs-sparkline id='container' width='350px' height='200px' [axisSettings]='axisSettings' [markerSettings]='markerSettings' lowPointColor= 'red' highPointColor= 'blue' [dataSource]="data" >
    </ejs-sparkline>`
})
export class AppComponent {
    public data: object[] = [3, 6, 4, 1, 3, 2, 5] as any;
    public axisSettings: object ={
        minX: -1, maxX: 7, maxY: 7, minY: -1
    };
    public markerSettings: object ={
        visible: ['High', 'Low']
    };
};

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { SparklineModule, SparklineTooltipService } from '@syncfusion/ej2-angular-charts';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, SparklineModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
	providers: [SparklineTooltipService]
})
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);

Customizing markers

Sparkline markers can be customized in terms of fill color, border color, width, opacity, and size. The following code example shows customizing marker’s fill, border, and size.

[app.component.ts]

app.component.ts

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

@Component({
    selector: 'app-container',
    template: `<ejs-sparkline id='container' width='350px' height='200px' [axisSettings]='axisSettings' [markerSettings]='markerSettings' [dataSource]="data" >
    </ejs-sparkline>`
})
export class AppComponent {
    public data: object[] = [3, 6, 4, 1, 3, 2, 5] as any;
    public markerSettings: object= {
        visible: ['All'],
        size: 5, fill: 'white', border: { color: 'blue', width: 2}
    };
    public axisSettings: object= {
        minX: -1, maxX: 7, maxY: 7, minY: -1
    };
};

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { SparklineModule, SparklineTooltipService } from '@syncfusion/ej2-angular-charts';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, SparklineModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
	providers: [SparklineTooltipService]
})
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);