Legend customization in Angular Heatmap chart component
28 Sep 20236 minutes to read
You can change the legend label using the legendRender
client-side event. You can also hide the legend label using this client-side event.
import { EmitType } from '@syncfusion/ej2-base';
import { Component, ViewEncapsulation } from '@angular/core';
import { ILegendRenderEventArgs } from '@syncfusion/ej2-angular-heatmap';
@Component({
selector: 'app-container',
template: `<ejs-heatmap id='container' style="display:block;" [dataSource]='dataSource' [xAxis]='xAxis' [yAxis]='yAxis'
[titleSettings]='titleSettings' [paletteSettings]='paletteSettings' [legendSettings]='legendSettings' [cellSettings]='cellSettings' (legendRender)='legendRender($event)'>
</ejs-heatmap>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent{
dataSource: Object[] = [
[73000, 39000, 26000, 39000, 94000, 0],
[93000, 58000, 53000, 38000, 26000, 68000],
[99000, 28000, 22000, 4000, 66000, 9000],
[14000, 26000, 97000, 69000, 69000, 3000],
[7000, 46000, 47000, 47000, 88000, 6000],
[41000, 55000, 73000, 23000, 30000, 79000],
[56000, 69000, 21000, 86000, 3000, 33000],
[45000, 7000, 53000, 81000, 95000, 79000],
[60000, 77000, 74000, 68000, 88000, 51000],
[25000, 25000, 10000, 12000, 78000, 14000],
[25000, 56000, 55000, 58000, 12000, 82000],
[74000, 33000, 88000, 23000, 86000, 59000]];
legendSettings: any;
public legendRender(args: ILegendRenderEventArgs | any): void {
if(args.text=='25,000' || args.text=='50,000'|| args.text=='99,000'){
args.text = args.text.replace(/,/, "");
args.text = `${parseInt((args.text/1000 as any))}` + "k "+"$";
} else {
args.cancel=true;
}
};
titleSettings: Object = {
text: 'Sales Revenue per Employee (in 1000 US$)',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
};
xAxis: Object = {
labels: ['Nancy', 'Andrew', 'Janet', 'Margaret', 'Steven',
'Michael', 'Robert', 'Laura', 'Anne', 'Paul', 'Karin', 'Mario'],
};
yAxis: Object = {
labels: ['Mon', 'Tues', 'Wed', 'Thurs', 'Fri', 'Sat'],
};
cellSettings: Object = {
showLabel: false,
};
paletteSettings: Object = {
palette: [
{ value: 0, color: '#C2E7EC' },
{ value: 25000, color: '#AEDFE6' },
{ value: 50000, color: '#9AD7E0' },
{ value: 75000, color: '#72C7D4' },
{ value: 99000, color: '#5EBFCE' },
],
type: 'Gradient'
};
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { HeatMapModule} from '@syncfusion/ej2-angular-heatmap';
import { LegendService} from '@syncfusion/ej2-angular-heatmap';
/**
* Module
*/
@NgModule({
imports: [
BrowserModule, HeatMapModule
],
declarations: [AppComponent],
bootstrap: [AppComponent],
providers: [ LegendService]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';
import 'zone.js';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);