Last value label in React Chart component

27 Jun 202512 minutes to read

The lastValueLabel in a chart allows you to easily display the value of the last data point in a series. This feature provides an intuitive way to highlight the most recent or last data value in a series on your chart.

Enable last value label

To show the last value label, make sure the enable property inside the lastValueLabel settings is set to true within the series configuration.

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Category, ChartComponent, ColumnSeries, DataLabel, Inject, Legend, LastValueLabel, SeriesCollectionDirective, SeriesDirective, Tooltip } from '@syncfusion/ej2-react-charts';
import { data } from './datasource';
function App() {
    const primaryXAxis = { title: 'Year', interval: 1 };
    const primaryYAxis = { title: 'Efficiency', labelFormat: '{value}%' };
    const tooltip = { enable: true };
    const title = 'Efficiency of oil-fired power production';
    const marker = { visible: false, dataLabel: { visible: true }};
    return <ChartComponent id='charts' title={title} width='90%' primaryXAxis={primaryXAxis} primaryYAxis={primaryYAxis} tooltip={tooltip}>
      <Inject services={[ColumnSeries, Legend, Tooltip, DataLabel, LastValueLabel, Category]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' type='Column' name='series1' animation= 
          lastValueLabel= marker={marker}/>
      </SeriesCollectionDirective>
    </ChartComponent>;
};
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));
import * as React from "react";
import * as ReactDOM from "react-dom";
import { Category, ChartComponent, ColumnSeries, DataLabel, Inject, Legend, SeriesCollectionDirective, MarkerSettingsModel, SeriesDirective, TooltipSettingsModel, Tooltip, LastValueLabel } from '@syncfusion/ej2-react-charts';
import { data } from './datasource';

function App() {
    const primaryXAxis: Object = { title: 'Year', interval: 1 };
    const primaryYAxis: Object = { title: 'Efficiency', labelFormat: '{value}%' };
    const tooltip: TooltipSettingsModel = { enable: true };
    const title: string = 'Efficiency of oil-fired power production';
    const marker: MarkerSettingsModel = { visible: false, dataLabel: { visible: true }};

    return <ChartComponent id='charts' title={title} width='90%' primaryXAxis={primaryXAxis} primaryYAxis={primaryYAxis} tooltip={tooltip}>
      <Inject services={[ColumnSeries, Legend, Tooltip, DataLabel, LastValueLabel, Category]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={data} xName='x' yName='y' type='Column' name='series1' animation= 
          lastValueLabel= marker={marker}/>
      </SeriesCollectionDirective>
    </ChartComponent>;
};

export default App;
ReactDOM.render(<App />, document.getElementById("charts"));
export let data = [
    { x: 2005, y: 28 }, { x: 2006, y: 25 }, { x: 2007, y: 26 }, { x: 2008, y: 27 },
    { x: 2009, y: 32 }, { x: 2010, y: 35 }, { x: 2011, y: 40 }
];
export let data: Object[] = [
    { x: 2005, y: 28 }, { x: 2006, y: 25 }, { x: 2007, y: 26 }, { x: 2008, y: 27 },
    { x: 2009, y: 32 }, { x: 2010, y: 35 }, { x: 2011, y: 40 }
];

Note: To use the last value label feature, we need to inject LastValueLabel module into the services.

Customization

The appearance of the last value label can be customized using style properties such as font, background, border, dashArray, lineWidth, lineColor, rx, and ry in the lastValueLabel property of the chart series. These settings allow you to tailor the label’s look to align with your desired visual presentation.

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Category, ChartComponent, ColumnSeries, DataLabel, Inject, Legend, LastValueLabel, SeriesCollectionDirective, SeriesDirective, Tooltip } from '@syncfusion/ej2-react-charts';
import { data } from './datasource';
function App() {
    const primaryXAxis = { title: 'Year', interval: 1 };
        const primaryYAxis = { title: 'Efficiency', labelFormat: '{value}%' };
        const lastValueLabel = { enable: true, background: "blue", lineColor: "red", lineWidth: 2, dashArray: "5,5", rx: 10, ry: 10, border: { width: 2, color: "red" }, font: { color: "white", size: "12px", fontWeight: "bold" } };
        const tooltip = { enable: true };
        const title = 'Efficiency of oil-fired power production';
        const marker = { visible: false, dataLabel: { visible: true }};
        return <ChartComponent id='charts' title={title} width='90%' primaryXAxis={primaryXAxis} primaryYAxis={primaryYAxis} tooltip={tooltip}>
          <Inject services={[ColumnSeries, Legend, Tooltip, DataLabel, LastValueLabel, Category]}/>
          <SeriesCollectionDirective>
            <SeriesDirective dataSource={data} xName='x' yName='y' type='Column' name='series1' animation= 
              lastValueLabel={lastValueLabel} marker={marker}/>
          </SeriesCollectionDirective>
        </ChartComponent>;
};
export default App;
ReactDOM.render(<App />, document.getElementById("charts"));
import * as React from "react";
import * as ReactDOM from "react-dom";
import { Category, ChartComponent, ColumnSeries, DataLabel, Inject, Legend, SeriesCollectionDirective, MarkerSettingsModel, SeriesDirective, TooltipSettingsModel, Tooltip, LastValueLabel, LastValueLabelSettingsModel } from '@syncfusion/ej2-react-charts';
import { data } from './datasource';

function App() {
    const primaryXAxis: Object = { title: 'Year', interval: 1 };
        const primaryYAxis: Object = { title: 'Efficiency', labelFormat: '{value}%' };
        const lastValueLabel: LastValueLabelSettingsModel  = { enable: true, background: "blue", lineColor: "red", lineWidth: 2, dashArray: "5,5", rx: 10, ry: 10, border: { width: 2, color: "red" }, font: { color: "white", size: "12px", fontWeight: "bold" } };
        const tooltip: TooltipSettingsModel = { enable: true };
        const title: string = 'Efficiency of oil-fired power production';
        const marker: MarkerSettingsModel = { visible: false, dataLabel: { visible: true }};
    
        return <ChartComponent id='charts' title={title} width='90%' primaryXAxis={primaryXAxis} primaryYAxis={primaryYAxis} tooltip={tooltip}>
          <Inject services={[ColumnSeries, Legend, Tooltip, DataLabel, LastValueLabel, Category]}/>
          <SeriesCollectionDirective>
            <SeriesDirective dataSource={data} xName='x' yName='y' type='Column' name='series1' animation= 
              lastValueLabel={lastValueLabel} marker={marker}/>
          </SeriesCollectionDirective>
        </ChartComponent>;
};

export default App;
ReactDOM.render(<App />, document.getElementById("charts"));
export let data = [
    { x: 2005, y: 28 }, { x: 2006, y: 25 }, { x: 2007, y: 26 }, { x: 2008, y: 27 },
    { x: 2009, y: 32 }, { x: 2010, y: 35 }, { x: 2011, y: 40 }
];
export let data: Object[] = [
    { x: 2005, y: 28 }, { x: 2006, y: 25 }, { x: 2007, y: 26 }, { x: 2008, y: 27 },
    { x: 2009, y: 32 }, { x: 2010, y: 35 }, { x: 2011, y: 40 }
];