Working with data in React Chart component
20 Jan 202324 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 dataSourceproperty in series. Now map the fields in JSON to xName and yName properties.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { Category, ChartComponent, ColumnSeries, Inject, Legend, LineSeries, SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const data = [
{ 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 }
];
const primaryxAxis = { valueType: 'Category' };
return <ChartComponent id='charts' primaryXAxis={primaryxAxis}>
<Inject services={[ColumnSeries, Legend, LineSeries, Category]}/>
<SeriesCollectionDirective>
<SeriesDirective dataSource={data} xName='month' type='Column' yName='sales' name='Sales'/>
</SeriesCollectionDirective>
</ChartComponent>;
}
;
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel,Category,ChartComponent, ColumnSeries, Inject, Legend, LineSeries,
SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const data: any[] = [
{ 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 }
];
const primaryxAxis: AxisModel = { valueType: 'Category' };
return <ChartComponent id='charts' primaryXAxis={primaryxAxis}>
<Inject services={[ColumnSeries, Legend, LineSeries, Category]} />
<SeriesCollectionDirective>
<SeriesDirective dataSource={data} xName='month' type='Column' yName='sales' name='Sales' />
</SeriesCollectionDirective>
</ChartComponent>
};
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));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 * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject, ScrollBar, Zoom, LineSeries, Tooltip, DateTime, Crosshair } from '@syncfusion/ej2-react-charts';
import { Internationalization } from '@syncfusion/ej2-base';
function App() {
let chart;
let intl = new Internationalization();
function GetDateTimeData(start, end) {
let series1 = [];
let date;
let value = 30;
let option = {
skeleton: 'full',
type: 'dateTime'
};
let dateParser = intl.getDateParser(option);
let dateFormatter = intl.getDateFormat(option);
for (let i = 0; start <= end; i++) {
date = Date.parse(dateParser(dateFormatter(start)));
if (Math.random() > .5) {
value += (Math.random() * 10 - 5);
}
else {
value -= (Math.random() * 10 - 5);
}
if (value < 0) {
value = getRandomInt(20, 40);
}
let point1 = { x: new Date(date), y: Math.round(value) };
new Date(start.setDate(start.getDate() + 1));
series1.push(point1);
}
return series1;
}
function getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
return <ChartComponent id='charts' ref={chart => chart = chart} primaryXAxis={{
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,
}
}} primaryYAxis={{
title: 'Server Load',
labelFormat: '{value}MB'
}} crosshair={{ enable: true, lineType: 'Vertical' }} chartArea={{ border: { width: 0 } }} tooltip={{ enable: true }} legendSettings={{ visible: true }}
// scrollStart={this.scrollStart.bind(this)}
// scrollEnd={this.scrollEnd.bind(this)}
title='Network Load' height='450' width='100%'>
<Inject services={[LineSeries, DateTime, Tooltip, ScrollBar, Zoom, Crosshair]}/>
<SeriesCollectionDirective>
<SeriesDirective dataSource={GetDateTimeData(new Date(2009, 0, 1), new Date(2009, 8, 1))} xName='x' yName='y' type='Line' animation={{ enable: false }}>
</SeriesDirective>
</SeriesCollectionDirective>
</ChartComponent>;
}
;
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, Inject,
ChartTheme, ScrollBar, Zoom, IScrollEventArgs, LineSeries, Tooltip,
DateTime, ILoadedEventArgs, Chart, Crosshair, ColumnSeries } from '@syncfusion/ej2-react-charts';
import { Internationalization } from '@syncfusion/ej2-base';
function App() {
let chart: ChartComponent;
let intl: Internationalization = new Internationalization();
function GetDateTimeData(start: Date, end: Date): { x: Date, y: number }[] {
let series1: { x: Date, y: number }[] = [];
let date: number;
let value: number = 30;
let option: DateFormatOptions = {
skeleton: 'full',
type: 'dateTime'
};
let dateParser: Function = intl.getDateParser(option);
let dateFormatter: Function = intl.getDateFormat(option);
for (let i: number = 0; start <= end; i++) {
date = Date.parse(dateParser(dateFormatter(start)));
if (Math.random() > .5) {
value += (Math.random() * 10 - 5);
} else {
value -= (Math.random() * 10 - 5);
}
if (value < 0) {
value = getRandomInt(20, 40);
}
let point1: { x: Date, y: number } = { x: new Date(date), y: Math.round(value) };
new Date(start.setDate(start.getDate() + 1));
series1.push(point1);
}
return series1;
}
function getRandomInt(min: number, max: number): number {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
return <ChartComponent id='charts'
ref={chart => chart = chart}
primaryXAxis={{
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,
}
}}
primaryYAxis={{
title: 'Server Load',
labelFormat: '{value}MB'
}}
crosshair={{ enable: true, lineType: 'Vertical' }}
chartArea={{ border: { width: 0 } }}
tooltip={{ enable: true }}
legendSettings={{ visible: true }}
// scrollStart={this.scrollStart.bind(this)}
// scrollEnd={this.scrollEnd.bind(this)}
title='Network Load' height='450' width='100%' >
<Inject services={[LineSeries, DateTime, Tooltip, ScrollBar, Zoom, Crosshair]} />
<SeriesCollectionDirective>
<SeriesDirective dataSource={GetDateTimeData(new Date(2009, 0, 1), new Date(2009, 8, 1))} xName='x' yName='y'
type='Line' animation={{ enable: false }}>
</SeriesDirective>
</SeriesCollectionDirective>
</ChartComponent>
};
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));Common Datasource
You can also bind a JSON data common to all series using dataSource property in chart.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { Category, ChartComponent, ColumnSeries, Inject, Legend, LineSeries, SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const 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 }
];
const primaryxAxis = { valueType: 'Category' };
return <ChartComponent id='charts' primaryXAxis={primaryxAxis} dataSource={chartData}>
<Inject services={[ColumnSeries, Legend, LineSeries, Category]}/>
<SeriesCollectionDirective>
<SeriesDirective xName='month' type='Column' yName='sales'/>
<SeriesDirective xName='month' type='Column' yName='sales1'/>
</SeriesCollectionDirective>
</ChartComponent>;
}
;
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel,Category,ChartComponent, ColumnSeries, Inject, Legend, LineSeries,
SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const chartData: any[] = [
{ 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 }
];
const primaryxAxis: AxisModel = { valueType: 'Category' };
return <ChartComponent id='charts' primaryXAxis={primaryxAxis} dataSource={chartData}>
<Inject services={[ColumnSeries, Legend, LineSeries, Category]} />
<SeriesCollectionDirective>
<SeriesDirective xName='month' type='Column' yName='sales' />
<SeriesDirective xName='month' type='Column' yName='sales1' />
</SeriesCollectionDirective>
</ChartComponent>
};
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));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 * as React from "react";
import * as ReactDOM from "react-dom";
import { DataManager, Query } from '@syncfusion/ej2-data';
import { Category, ChartComponent, ColumnSeries, Inject, Legend, LineSeries, SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const dataManager = new DataManager({
url: 'http://mvc.syncfusion.com/Services/Northwnd.svc/Tasks/'
});
const query = new Query().take(5).where('Estimate', 'lessThan', 3, false);
const primaryxAxis = { valueType: 'Category', title: 'Asignee' };
const primaryyAxis = { title: 'Estimate', minimum: 0, maximum: 3, interval: 1 };
return <ChartComponent id='charts' primaryXAxis={primaryxAxis} primaryYAxis={primaryyAxis}>
<Inject services={[ColumnSeries, Legend, Category, LineSeries]}/>
<SeriesCollectionDirective>
<SeriesDirective dataSource={dataManager} xName='Assignee' type='Column' yName='Estimate' name='Sales' query={query}/>
</SeriesCollectionDirective>
</ChartComponent>;
}
;
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));import * as React from "react";
import * as ReactDOM from "react-dom";
import { DataManager,Query} from '@syncfusion/ej2-data'
import { AxisModel,Category,ChartComponent, ColumnSeries, Inject, Legend, LineSeries, SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const dataManager = new DataManager({
url: 'http://mvc.syncfusion.com/Services/Northwnd.svc/Tasks/'
});
const query = new Query().take(5).where('Estimate', 'lessThan', 3, false);
const primaryxAxis: AxisModel = { valueType: 'Category', title: 'Asignee' };
const primaryyAxis: AxisModel = { title: 'Estimate', minimum: 0, maximum: 3, interval: 1 };
return <ChartComponent id='charts'
primaryXAxis={primaryxAxis}
primaryYAxis={primaryyAxis}>
<Inject services={[ColumnSeries, Legend, Category, LineSeries]} />
<SeriesCollectionDirective>
<SeriesDirective dataSource={dataManager} xName='Assignee' type='Column' yName='Estimate' name='Sales' query={query} />
</SeriesCollectionDirective>
</ChartComponent>
};
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));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 * as React from "react";
import * as ReactDOM from "react-dom";
import { Category, ChartComponent, ColumnSeries, Inject, LineSeries, SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const data = [
{ month: 'Jan', sales: 35 }, { month: 'Feb', sales: null },
{ month: 'Mar', sales: 34 }, { month: 'Apr', sales: 32 },
{ month: 'May', sales: 40 }, { month: 'Jun', sales: undefined },
{ month: 'Jul', sales: 35 }, { month: 'Aug', sales: 55 },
{ month: 'Sep', sales: 38 }, { month: 'Oct', sales: 30 },
{ month: 'Nov', sales: 25 }, { month: 'Dec', sales: 32 }
];
const primaryxAxis = { valueType: 'Category' };
return <ChartComponent id='charts' primaryXAxis={primaryxAxis}>
<Inject services={[ColumnSeries, LineSeries, ColumnSeries, Category]}/>
<SeriesCollectionDirective>
<SeriesDirective dataSource={data} xName='month' type='Column' yName='sales' name='Sales'/>
<SeriesDirective dataSource={data} xName='month' type='Line' yName='sales' name='Sales'/>
</SeriesCollectionDirective>
</ChartComponent>;
}
;
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel,Category,ChartComponent, ColumnSeries, Inject, LineSeries,
SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const data: any[] = [
{ month: 'Jan', sales: 35 }, { month: 'Feb', sales: null },
{ month: 'Mar', sales: 34 }, { month: 'Apr', sales: 32 },
{ month: 'May', sales: 40 }, { month: 'Jun', sales: undefined },
{ month: 'Jul', sales: 35 }, { month: 'Aug', sales: 55 },
{ month: 'Sep', sales: 38 }, { month: 'Oct', sales: 30 },
{ month: 'Nov', sales: 25 }, { month: 'Dec', sales: 32 }
];
const primaryxAxis: AxisModel = { valueType: 'Category' };
return <ChartComponent id='charts' primaryXAxis={primaryxAxis}>
<Inject services={[ColumnSeries, LineSeries, ColumnSeries, Category]} />
<SeriesCollectionDirective>
<SeriesDirective dataSource={data} xName='month' type='Column' yName='sales' name='Sales' />
<SeriesDirective dataSource={data} xName='month' type='Line' yName='sales' name='Sales' />
</SeriesCollectionDirective>
</ChartComponent>
};
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));Empty point color
Specific color for empty point can be set by fill property in emptyPointSettings.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { Category, ChartComponent, ColumnSeries, Inject, LineSeries, SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const data = [
{ month: 'Jan', sales: 35 }, { month: 'Feb', sales: null },
{ month: 'Mar', sales: 34 }, { month: 'Apr', sales: 32 },
{ month: 'May', sales: 40 }, { month: 'Jun', sales: undefined },
{ month: 'Jul', sales: 35 }, { month: 'Aug', sales: 55 },
{ month: 'Sep', sales: 38 }, { month: 'Oct', sales: 30 },
{ month: 'Nov', sales: 25 }, { month: 'Dec', sales: 32 }
];
const primaryxAxis = { valueType: 'Category' };
const emptyPointSettings1 = { mode: 'Average', fill: 'pink' };
const emptyPointSettings2 = { mode: 'Zero', fill: 'green' };
return <ChartComponent id='charts' primaryXAxis={primaryxAxis}>
<Inject services={[ColumnSeries, LineSeries, ColumnSeries, Category]}/>
<SeriesCollectionDirective>
<SeriesDirective dataSource={data} xName='month' type='Column' yName='sales' name='Sales' emptyPointSettings={emptyPointSettings1}/>
<SeriesDirective dataSource={data} xName='month' type='Line' yName='sales' name='Sales' emptyPointSettings={emptyPointSettings2}/>
</SeriesCollectionDirective>
</ChartComponent>;
}
;
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));import * as React from "react";
import * as ReactDOM from "react-dom";
import { AxisModel,Category,ChartComponent, ColumnSeries, EmptyPointSettingsModel,
Inject, LineSeries, SeriesCollectionDirective, SeriesDirective } from '@syncfusion/ej2-react-charts';
function App() {
const data: any[] = [
{ month: 'Jan', sales: 35 }, { month: 'Feb', sales: null },
{ month: 'Mar', sales: 34 }, { month: 'Apr', sales: 32 },
{ month: 'May', sales: 40 }, { month: 'Jun', sales: undefined },
{ month: 'Jul', sales: 35 }, { month: 'Aug', sales: 55 },
{ month: 'Sep', sales: 38 }, { month: 'Oct', sales: 30 },
{ month: 'Nov', sales: 25 }, { month: 'Dec', sales: 32 }
];
const primaryxAxis: AxisModel = { valueType: 'Category' };
const emptyPointSettings1: EmptyPointSettingsModel = { mode: 'Average', fill: 'pink' };
const emptyPointSettings2: EmptyPointSettingsModel = { mode: 'Zero', fill: 'green' };
return <ChartComponent id='charts' primaryXAxis={primaryxAxis}>
<Inject services={[ColumnSeries, LineSeries, ColumnSeries, Category]} />
<SeriesCollectionDirective>
<SeriesDirective dataSource={data} xName='month' type='Column' yName='sales' name='Sales' emptyPointSettings={emptyPointSettings1} />
<SeriesDirective dataSource={data} xName='month' type='Line' yName='sales' name='Sales' emptyPointSettings={emptyPointSettings2} />
</SeriesCollectionDirective>
</ChartComponent>
};
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));