Working with data in Angular Chart component
18 Nov 202224 minutes to read
Chart can visualise data bound from local or remote data.
Local Data
You can bind a simple JSON data to the chart using dataSource
property in series. Now map the fields in JSON to xName
and yName
properties.
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-container',
template:
`<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'>
<e-series-collection>
<e-series [dataSource]='chartData' type='Column' xName='month' yName='sales' name='Sales'></e-series>
</e-series-collection>
</ejs-chart>`
})
export class AppComponent implements OnInit {
public primaryXAxis: Object;
public chartData: Object[];
ngOnInit(): void {
this.chartData = [
{ month: 'Jan', sales: 35 }, { month: 'Feb', sales: 28 },
{ month: 'Mar', sales: 34 }, { month: 'Apr', sales: 32 },
{ month: 'May', sales: 40 }, { month: 'Jun', sales: 32 },
{ month: 'Jul', sales: 35 }, { month: 'Aug', sales: 55 },
{ month: 'Sep', sales: 38 }, { month: 'Oct', sales: 30 },
{ month: 'Nov', sales: 25 }, { month: 'Dec', sales: 32 }
];
this.primaryXAxis = {
valueType: 'Category'
};
}
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ChartModule } from '@syncfusion/ej2-angular-charts';
import { DateFormatOptions } from '@syncfusion/ej2-base'
import { CategoryService, DateTimeService, ScrollBarService, ColumnSeriesService, LineSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService,LegendService, TooltipService
} from '@syncfusion/ej2-angular-charts';
/**
* Module
*/
@NgModule({
imports: [
BrowserModule, ChartModule
],
declarations: [AppComponent],
bootstrap: [AppComponent],
providers: [ CategoryService, DateTimeService, ScrollBarService, LineSeriesService, ColumnSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService, LegendService, TooltipService,]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);
Common Datasource
You can also bind a JSON data common to all series using dataSource
property in chart.
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-container',
template:
`<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis' [dataSource]='chartData'>
<e-series-collection>
<e-series type='Column' xName='month' yName='sales' name='Sales'></e-series>
<e-series type='Column' xName='month' yName='sales1' name='Sales'></e-series>
</e-series-collection>
</ejs-chart>`
})
export class AppComponent implements OnInit {
public primaryXAxis: Object;
public chartData: Object[];
ngOnInit(): void {
this.chartData = [
{ month: 'Jan', sales: 35, sales1: 28 }, { month: 'Feb', sales: 28, sales1: 35 },
{ month: 'Mar', sales: 34, sales1: 32 }, { month: 'Apr', sales: 32, sales1: 34 },
{ month: 'May', sales: 40, sales1: 32 }, { month: 'Jun', sales: 32, sales1: 40 },
{ month: 'Jul', sales: 35, sales1: 55 }, { month: 'Aug', sales: 55, sales1: 35 },
{ month: 'Sep', sales: 38, sales1: 30 }, { month: 'Oct', sales: 30, sales1: 38 },
{ month: 'Nov', sales: 25, sales1: 32 }, { month: 'Dec', sales: 32, sales1: 25 }
];
this.primaryXAxis = {
valueType: 'Category'
};
}
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ChartModule } from '@syncfusion/ej2-angular-charts';
import { DateFormatOptions } from '@syncfusion/ej2-base'
import { CategoryService, DateTimeService, ScrollBarService, ColumnSeriesService, LineSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService,LegendService, TooltipService
} from '@syncfusion/ej2-angular-charts';
/**
* Module
*/
@NgModule({
imports: [
BrowserModule, ChartModule
],
declarations: [AppComponent],
bootstrap: [AppComponent],
providers: [ CategoryService, DateTimeService, ScrollBarService, LineSeriesService, ColumnSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService, LegendService, TooltipService,]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);
Lazy loading
Lazy loading allows you to load data for chart on demand. Chart will fire the scrollEnd event, in that we can get the minimum and maximum range of the axis, based on this, we can upload the data to chart.
import { Component, OnInit, ViewChild } from '@angular/core';
import { ChartComponent } from '@syncfusion/ej2-angular-charts';
import { Internationalization, DateFormatOptions } from '@syncfusion/ej2-base';
import { ChangeEventArgs as NumericChange } from '@syncfusion/ej2-inputs';
import { NumericTextBoxComponent } from '@syncfusion/ej2-angular-inputs';
import { IScrollEventArgs, ILoadedEventArgs } from '@syncfusion/ej2-charts';
import { ChangeEventArgs } from '@syncfusion/ej2-dropdowns';
import { DropDownListComponent } from '@syncfusion/ej2-angular-dropdowns';
@Component({
selector: 'app-container',
template:
`<ejs-chart style='display:block;' #chart [legendSettings]='legend' id='container' [primaryXAxis]='primaryXAxis'
[tooltip]='tooltip' [height]='height' [width]='width' (scrollEnd)='scrollEnd($event)'
[primaryYAxis]='primaryYAxis' [crosshair]='crosshair' [chartArea]='chartArea' [title]='title'>
<e-series-collection>
<e-series [dataSource]='data' [animation]='animation' type='Line' xName='x' yName='y'>
</e-series>
</e-series-collection>
</ejs-chart>`
})
export class AppComponent implements OnInit {
public intl: Internationalization = new Internationalization();
@ViewChild('point')
private pointslength: NumericTextBoxComponent;
public value: number = 1000;
public step: number = 100;
public enabled: boolean = false;
public format: string = 'n';
public dropValue: string = 'Range';
public minValue: Date = new Date(2009, 0, 1);
public maxValue: Date = new Date(2014, 0, 1);
public dropDownData: Object = [
{ value: 'Range' },
{ value: 'Points Length' }
];
public fields: Object = { text: 'value', value: 'value' };
public data: Object[] = this.GetNumericData(new Date(2009, 0, 1));
@ViewChild('chart')
public chart: ChartComponent;
// Initializing Primary X Axis
public primaryXAxis: Object = {
title: 'Day',
valueType: 'DateTime',
edgeLabelPlacement: 'Shift',
skeleton: 'yMMM',
skeletonType: 'Date',
scrollbarSettings: {
range: {
minimum: new Date(2009, 0, 1),
maximum: new Date(2014, 0, 1)
},
enable: true,
pointsLength: 1000
}
};
public height: string = '450';
public width: string = '100%';
//Initializing Primary Y Axis
public primaryYAxis: Object = {
title: 'Server Load',
labelFormat: '{value}MB'
};
public tooltip: Object = {
enable: true, shared: true,
header : "<b>${point.x}</b>", format : "Server load : <b>${point.y}</b>"
};
public legend: Object = {
visible: false
};
public title: string = 'Network Load';
public animation: Object = { enable: false };
public chartArea: Object = {
border: {
width: 0
}
};
public scrollEnd(args: IScrollEventArgs): void {
this.chart.series[0].dataSource = this.GetNumericData(new Date(args.currentRange.maximum));
this.chart.dataBind();
};
public GetNumericData(date: Date): {x: Date, y: number}[] {
var series1 = [];
var value = 30;
for (var i = 0; i <= 60; i++) {
if (Math.random() > .5) {
value += (Math.random() * 10 - 5);
}
else {
value -= (Math.random() * 10 - 5);
}
if (value < 0) {
value = this.getRandomInt(20, 40);
}
date = new Date(date.setMinutes(date.getMinutes() + 1));
var point = { x: date, y: Math.round(value) };
series1.push(point);
}
return series1;
}
public getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
};
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ChartModule } from '@syncfusion/ej2-angular-charts';
import { DateFormatOptions } from '@syncfusion/ej2-base'
import { CategoryService, DateTimeService, ScrollBarService, ColumnSeriesService, LineSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService,LegendService, TooltipService
} from '@syncfusion/ej2-angular-charts';
/**
* Module
*/
@NgModule({
imports: [
BrowserModule, ChartModule
],
declarations: [AppComponent],
bootstrap: [AppComponent],
providers: [ CategoryService, DateTimeService, ScrollBarService, LineSeriesService, ColumnSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService, LegendService, TooltipService,]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);
Remote Data
You can also bind remote data to the chart using DataManager
. The DataManager requires minimal information like webservice URL, adaptor and crossDomain to interact with service endpoint properly. Assign the instance of DataManager to the dataSource
property in series and map the fields of data to xName
and yName
properties. You can also use the query
property of the series to filter the data.
import { Component, OnInit } from '@angular/core';
import { DataManager, Query } from '@syncfusion/ej2-data';
@Component({
selector: 'app-container',
template:
`<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis' [primaryYAxis]='primaryYAxis'>
<e-series-collection>
<e-series [dataSource]='dataManager' type='Column' [query]='query' xName='CustomerID' yName='Freight' name='Sales'></e-series>
</e-series-collection>
</ejs-chart>`
})
export class AppComponent implements OnInit {
public primaryXAxis: Object;
public primaryYAxis: Object;
public dataManager: DataManager = new DataManager({
url: 'https://ej2services.syncfusion.com/production/web-services/api/Orders'
});
public query: Query = new Query().take(5).where('Estimate', 'lessThan', 3, false);
ngOnInit(): void {
this.primaryXAxis = {
rangePadding: 'Additional',
valueType: 'Category',
title: 'Assignee'
};
this.primaryYAxis = {
title: 'Estimate'
};
}
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ChartModule } from '@syncfusion/ej2-angular-charts';
import { DateFormatOptions } from '@syncfusion/ej2-base'
import { CategoryService, DateTimeService, ScrollBarService, ColumnSeriesService, LineSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService,LegendService, TooltipService
} from '@syncfusion/ej2-angular-charts';
/**
* Module
*/
@NgModule({
imports: [
BrowserModule, ChartModule
],
declarations: [AppComponent],
bootstrap: [AppComponent],
providers: [ CategoryService, DateTimeService, ScrollBarService, LineSeriesService, ColumnSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService, LegendService, TooltipService,]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);
Empty points
The Data points that uses the null
or undefined
as value are considered as empty points. Empty data points are ignored and not plotted in the Chart.
When the data is provided by using the points property, By using emptyPointSettings
property in series, you can customize the empty point. Default mode
of the empty point is Gap
.
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-container',
template:
`<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'>
<e-series-collection>
<e-series [dataSource]='chartData' type='Column' xName='month' yName='sales' name='Sales' [emptyPointSettings]='emptySeries1'></e-series>
</e-series-collection>
</ejs-chart>`
})
export class AppComponent implements OnInit {
public primaryXAxis: Object;
public chartData: Object[];
public marker: Object;
public emptySeries1: Object;
public emptySeries2: Object;
ngOnInit(): void {
this.chartData = [
{ month: 'Jan', sales: 35 }, { month: 'Feb', sales: null },
{ month: 'Mar', sales: 34 }, { month: 'Apr', sales: 32 },
{ month: 'May', sales: 40 }, { month: 'Jun', sales: 32 },
{ month: 'Jul', sales: undefined }, { month: 'Aug', sales: 55 },
{ month: 'Sep', sales: 38 }, { month: 'Oct', sales: 30 },
{ month: 'Nov', sales: 25 }, { month: 'Dec', sales: 32 }
];
this.primaryXAxis = {
valueType: 'Category'
}
this.marker: {
visible : true
}
this.emptySeries1 = {
mode: 'Gap'
}
this.emptySeries2 = {
mode:'Average'
}
}
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ChartModule } from '@syncfusion/ej2-angular-charts';
import { DateFormatOptions } from '@syncfusion/ej2-base'
import { CategoryService, DateTimeService, ScrollBarService, ColumnSeriesService, LineSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService,LegendService, TooltipService
} from '@syncfusion/ej2-angular-charts';
/**
* Module
*/
@NgModule({
imports: [
BrowserModule, ChartModule
],
declarations: [AppComponent],
bootstrap: [AppComponent],
providers: [ CategoryService, DateTimeService, ScrollBarService, LineSeriesService, ColumnSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService, LegendService, TooltipService,]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);
Customizing empty point
Specific color for empty point can be set by fill
property in emptyPointSettings
. Border for a empty point can be set by border
property.
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-container',
template:
`<ejs-chart id="chart-container" [primaryXAxis]='primaryXAxis'>
<e-series-collection>
<e-series [dataSource]='chartData' type='Column' xName='month' yName='sales' name='Sales' [emptyPointSettings]='emptySeries1'></e-series>
</e-series-collection>
</ejs-chart>`
})
export class AppComponent implements OnInit {
public primaryXAxis: Object;
public chartData: Object[];
public marker: Object;
public emptySeries1: Object;
public emptySeries2: Object;
ngOnInit(): void {
this.chartData = [
{ month: 'Jan', sales: 35 }, { month: 'Feb', sales: null },
{ month: 'Mar', sales: 34 }, { month: 'Apr', sales: 32 },
{ month: 'May', sales: 40 }, { month: 'Jun', sales: 32 },
{ month: 'Jul', sales: undefined }, { month: 'Aug', sales: 55 },
{ month: 'Sep', sales: 38 }, { month: 'Oct', sales: 30 },
{ month: 'Nov', sales: 25 }, { month: 'Dec', sales: 32 }
];
this.primaryXAxis = {
valueType: 'Category'
}
this.marker: {
visible : true
}
this.emptySeries1 = {
mode:'Average',
fill: 'red',
border: { width: 2, color: 'violet'}
}
}
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ChartModule } from '@syncfusion/ej2-angular-charts';
import { DateFormatOptions } from '@syncfusion/ej2-base'
import { CategoryService, DateTimeService, ScrollBarService, ColumnSeriesService, LineSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService,LegendService, TooltipService
} from '@syncfusion/ej2-angular-charts';
/**
* Module
*/
@NgModule({
imports: [
BrowserModule, ChartModule
],
declarations: [AppComponent],
bootstrap: [AppComponent],
providers: [ CategoryService, DateTimeService, ScrollBarService, LineSeriesService, ColumnSeriesService,
ChartAnnotationService, RangeColumnSeriesService, StackingColumnSeriesService, LegendService, TooltipService,]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);