Gauge appearance in Angular Circular gauge component

23 Sep 202316 minutes to read

Gauge Title

Circular gauge can be given a title by using title property, to show the information about the gauge.
Title can be customized by using titleStyle property in gauge.

app.component.ts

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

@Component({
    selector: 'app-container',
    template:
    `<ejs-circulargauge id="circular-container" title="Speedometer" [titleStyle]="titleStyle">
    </ejs-circulargauge>`
})
export class AppComponent implements OnInit {
    public titleStyle?: Object;
    ngOnInit(): void {
        // Initialize objects.
        this.titleStyle = {
            color: '#27d5ff'
        };
    }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { CircularGaugeModule } from '@syncfusion/ej2-angular-circulargauge';

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

Gauge Position

Gauge can be positioned anywhere in the container with the help of centerX and centerY property and it accepts values either in percentage or in pixels.
The default value of the centerX and centerY property is 50%, which means gauge will get rendered to the centre of the container.

In Pixel

You can set the mid point of the gauge in pixel as demonstrated below,

app.component.ts

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

@Component({
    selector: 'app-container',
    template:
    `<ejs-circulargauge id="circular-container" centerX='20' centerY='20'>
        <e-axes>
            <e-axis [lineStyle]="lineStyle" startAngle=90 endAngle=180>
            </e-axis>
        </e-axes>
    </ejs-circulargauge>`
})
export class AppComponent implements OnInit {
    public lineStyle?: Object;
    ngOnInit(): void {
        // Initialize objects.
        this.lineStyle = {
            width: 2,
            color: '#F8F8F8'
        };
    }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { CircularGaugeModule } from '@syncfusion/ej2-angular-circulargauge';

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

In Percentage

By setting the value in percentage, gauge gets its mid point with respect to its plot area.
For example, when the centerX value as ‘0%’ and centerY value is ‘50%’, gauge will get positioned at the top left corner of the plot area.

app.component.ts

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

@Component({
    selector: 'app-container',
    template:
    `<ejs-circulargauge id="circular-container" centerX='10%' centerY='50%'>
        <e-axes>
            <e-axis [lineStyle]="lineStyle" startAngle=0 endAngle=180>
            </e-axis>
        </e-axes>
    </ejs-circulargauge>`
})
export class AppComponent implements OnInit {
    public lineStyle?: Object;
    ngOnInit(): void {
        // Initialize objects.
        this.lineStyle = {
            width: 2,
            color: '#F8F8F8'
        };
    }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { CircularGaugeModule } from '@syncfusion/ej2-angular-circulargauge';

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

Area Customization

Customize the gauge background

Using background and border properties, you can change the background color and border of the circular gauge.

app.component.ts

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

@Component({
    selector: 'app-container',
    template:
    `<ejs-circulargauge id="circular-container" background='skyblue' [border]='gaugeBorder'>
        <e-axes>
            <e-axis [lineStyle]="lineStyle" [majorTicks]="majorTicks" [minorTicks]="minorTicks" startAngle=230 endAngle=130 radius="90%" maximum=120>
                <e-pointers>
                    <e-pointer value=60 radius="60%"></e-pointer>
                </e-pointers>
                <e-ranges>
                    <e-range start=0 end=70 radius="110%" strokeWidth=10></e-range>
                    <e-range start=70 end=110 radius="110%" strokeWidth=10></e-range>
                    <e-range start=110 end=120 radius="110%" strokeWidth=10></e-range>
                </e-ranges>
            </e-axis>
        </e-axes>
    </ejs-circulargauge>`
})
export class AppComponent implements OnInit {
    public gaugeBorder?: Object;
    public majorTicks?: Object;
    public minorTicks?: Object;
    public lineStyle?: Object;
    ngOnInit(): void {
        // Initialize objects.
        this.gaugeBorder = { color: "#FF0000", width: 2 };
        this.majorTicks = { width: 1, color: '#8c8c8c' };
        this.minorTicks = { width: 1, color: '#8c8c8c' };
        this.lineStyle = { width: 2};
    }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { CircularGaugeModule } from '@syncfusion/ej2-angular-circulargauge';

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

Gauge Margin

You can set margin for gauge from its container through margin property.

app.component.ts

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

@Component({
    selector: 'app-container',
    template:
    `<ejs-circulargauge id="circular-container" background='skyblue' [margin]="margin" [border]='gaugeBorder'>
        <e-axes>
            <e-axis [lineStyle]="lineStyle" [majorTicks]="majorTicks" [minorTicks]="minorTicks" startAngle=230 endAngle=130 radius="90%" maximum=120>
                <e-pointers>
                    <e-pointer value=60 radius="60%"></e-pointer>
                </e-pointers>
                <e-ranges>
                    <e-range start=0 end=70 radius="110%" strokeWidth=10></e-range>
                    <e-range start=70 end=110 radius="110%" strokeWidth=10></e-range>
                    <e-range start=110 end=120 radius="110%" strokeWidth=10></e-range>
                </e-ranges>
            </e-axis>
        </e-axes>
    </ejs-circulargauge>`
})
export class AppComponent implements OnInit {
    public gaugeBorder?: Object;
    public majorTicks?: Object;
    public minorTicks?: Object;
    public lineStyle?: Object;
    public gaugeMargin?: Object;
    margin: { left: number; right: number; top: number; bottom: number; } | undefined;
    ngOnInit(): void {
        // Initialize objects.
        this.gaugeBorder = { color: "#FF0000", width: 2 };
        this.majorTicks = { width: 1, color: '#8c8c8c' };
        this.minorTicks = { width: 1, color: '#8c8c8c' };
        this.lineStyle = { width: 2 };
        this.margin = { left: 40, right: 40, top: 40, bottom: 40 };
    }

}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { CircularGaugeModule } from '@syncfusion/ej2-angular-circulargauge';

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

Radius calculation based on angles

Render semi or quarter circular gauges by modifying the start and end angles. By enabling the radius based on angle option, the radius of circular gauge will be calculated based on the start and end angles to avoid excess white space.

app.component.ts

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

@Component({
    selector: 'app-container',
    template:
    `<ejs-circulargauge id="circular-container" centerX='10%' centerY='50%'>
        <e-axes>
            <e-axis [lineStyle]="lineStyle" startAngle=270 endAngle=90>
            </e-axis>
        </e-axes>
    </ejs-circulargauge>`
})
export class AppComponent implements OnInit {
    public lineStyle?: Object;
    ngOnInit(): void {
        // Initialize objects.
        this.lineStyle = {
            width: 2,
            color: '#F8F8F8'
        };
    }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { CircularGaugeModule } from '@syncfusion/ej2-angular-circulargauge';

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