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Trendlines in React Chart component

24 Jun 2022 / 16 minutes to read

Trendlines are used to show the direction and speed of price.

Trendlines can be generated for Cartesian type series (Line, Column, Scatter, Area, Candle, Hilo etc.) except bar type series. You can add more than one trendline to a series.

Chart supports 6 types of trendlines.

Linear

A linear trendline is a best fit straight line that is used with simpler data sets. To render a linear trendline, use trendline type as Linear and inject Trendlines module using Chart.Inject(Trendlines).

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.series1 = [];
        this.yValue = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
            13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
            41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 10,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    chartLoad() {
        let i;
        let j = 0;
        for (i = 1973; i <= 2013; i++) {
            this.series1.push({ x: i, y: this.yValue[j] });
            j++;
        }
    }
    render() {
        this.chartLoad();
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Linear' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme
    ,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';

class App extends React.Component<{}, {}> {

  public series1: Object[] = [];
  public yValue: number[] = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
    13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
    41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
  public chartLoad(): void {
    let i: number;
    let j: number = 0;
    for (i = 1973; i <= 2013; i++) {
      this.series1.push({ x: i, y: this.yValue[j] });
      j++;
    }
  }
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 10,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    this.chartLoad();
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Linear' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Exponential

An exponential trendline is a curved line that is most useful when data values rise or fall at increasingly higher rates. You cannot create an exponential trendline, if your data contains zero or negative values.

To render a exponential trendline, use trendline type as Exponential and inject Trendlines module using Chart.Inject(Trendlines).

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.series1 = [];
        this.yValue = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
            13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
            41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 10,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    chartLoad() {
        let i;
        let j = 0;
        for (i = 1973; i <= 2013; i++) {
            this.series1.push({ x: i, y: this.yValue[j] });
            j++;
        }
    }
    render() {
        this.chartLoad();
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Exponential' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme
    ,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';

class App extends React.Component<{}, {}> {

  public series1: Object[] = [];
  public yValue: number[] = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
    13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
    41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
  public chartLoad(): void {
    let i: number;
    let j: number = 0;
    for (i = 1973; i <= 2013; i++) {
      this.series1.push({ x: i, y: this.yValue[j] });
      j++;
    }
  }
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 10,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    this.chartLoad();
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Exponential' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Logarithmic

A logarithmic trendline is a best-fit curved line that is most useful when the rate of change in the data increases or decreases quickly and then levels out. A logarithmic trendline can use negative and/or positive values.

To render a logarithmic trendline, use trendline type as Logarithmic and inject Trendlines module using Chart.Inject(Trendlines).

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.series1 = [];
        this.yValue = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
            13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
            41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 10,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    chartLoad() {
        let i;
        let j = 0;
        for (i = 1973; i <= 2013; i++) {
            this.series1.push({ x: i, y: this.yValue[j] });
            j++;
        }
    }
    render() {
        this.chartLoad();
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Logarithmic' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme
    ,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';

class App extends React.Component<{}, {}> {

  public series1: Object[] = [];
  public yValue: number[] = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
    13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
    41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
  public chartLoad(): void {
    let i: number;
    let j: number = 0;
    for (i = 1973; i <= 2013; i++) {
      this.series1.push({ x: i, y: this.yValue[j] });
      j++;
    }
  }
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 10,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    this.chartLoad();
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Logarithmic' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Polynomial

A polynomial trendline is a curved line that is used when data fluctuates.

To render a polynomial trendline, use trendline type as Polynomial and inject Trendlines module using Chart.Inject(Trendlines).

polynomialOrder used to define the polynomial value.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.series1 = [];
        this.yValue = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
            13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
            41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 10,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    chartLoad() {
        let i;
        let j = 0;
        for (i = 1973; i <= 2013; i++) {
            this.series1.push({ x: i, y: this.yValue[j] });
            j++;
        }
    }
    render() {
        this.chartLoad();
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Polynomial' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme
    ,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';

class App extends React.Component<{}, {}> {

  public series1: Object[] = [];
  public yValue: number[] = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
    13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
    41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
  public chartLoad(): void {
    let i: number;
    let j: number = 0;
    for (i = 1973; i <= 2013; i++) {
      this.series1.push({ x: i, y: this.yValue[j] });
      j++;
    }
  }
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 10,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    this.chartLoad();
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Polynomial' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Power

A power trendline is a curved line that is best used with data sets that compare measurements that increase at a specific rate.

To render a power trendline, use trendline type as Power and inject Trendlines module using Chart.Inject(Trendlines).

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.powerData = [
            { x: 1, y: 10 }, { x: 2, y: 50 }, { x: 3, y: 80 }, { x: 4, y: 110 },
            { x: 5, y: 180 }, { x: 6, y: 220 }, { x: 7, y: 300 }, { x: 8, y: 370 }, { x: 9, y: 490 }, { x: 10, y: 500 }
        ];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 50,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    render() {
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.powerData} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Power' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme
    ,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';

class App extends React.Component<{}, {}> {

  public powerData: object[] = [
    { x: 1, y: 10 }, { x: 2, y: 50 }, { x: 3, y: 80 }, { x: 4, y: 110 },
    { x: 5, y: 180 }, { x: 6, y: 220 }, { x: 7, y: 300 }, { x: 8, y: 370 }, { x: 9, y: 490 }, { x: 10, y: 500 }
  ];
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 50,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.powerData} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Power' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Moving Average

A moving average trendline smoothen out fluctuations in data to show a pattern or trend more clearly.

To render a moving average trendline, use trendline type as MovingAverage and inject Trendlines module using Chart.Inject(Trendlines).

period property defines the period to find the moving average.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.series1 = [];
        this.yValue = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
            13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
            41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 10,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    chartLoad() {
        let i;
        let j = 0;
        for (i = 1973; i <= 2013; i++) {
            this.series1.push({ x: i, y: this.yValue[j] });
            j++;
        }
    }
    render() {
        this.chartLoad();
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='MovingAverage' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme
    ,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';

class App extends React.Component<{}, {}> {

  public series1: Object[] = [];
  public yValue: number[] = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
    13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
    41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
  public chartLoad(): void {
    let i: number;
    let j: number = 0;
    for (i = 1973; i <= 2013; i++) {
      this.series1.push({ x: i, y: this.yValue[j] });
      j++;
    }
  }
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 10,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    this.chartLoad();
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='MovingAverage' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Customization of Trendline

The fill and width properties are used to customize the appearance of the trendline.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.series1 = [];
        this.yValue = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
            13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
            41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 10,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    chartLoad() {
        let i;
        let j = 0;
        for (i = 1973; i <= 2013; i++) {
            this.series1.push({ x: i, y: this.yValue[j] });
            j++;
        }
    }
    render() {
        this.chartLoad();
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Linear' fill='red' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';

class App extends React.Component<{}, {}> {

  public series1: Object[] = [];
  public yValue: number[] = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
    13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
    41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
  public chartLoad(): void {
    let i: number;
    let j: number = 0;
    for (i = 1973; i <= 2013; i++) {
      this.series1.push({ x: i, y: this.yValue[j] });
      j++;
    }
  }
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 10,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    this.chartLoad();
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Linear' fill='red' width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Forecasting

Trendline forecasting is the prediction of future/past situations.

Forward Forecasting and Backward Forecasting are the two types of forecasting.

Forward Forecasting

The value set for forwardForecast is used to determine the distance moving towards the future trend.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.series1 = [];
        this.yValue = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
            13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
            41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 10,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    chartLoad() {
        let i;
        let j = 0;
        for (i = 1973; i <= 2013; i++) {
            this.series1.push({ x: i, y: this.yValue[j] });
            j++;
        }
    }
    render() {
        this.chartLoad();
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Linear' backwardForecast={5} width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';

class App extends React.Component<{}, {}> {

  public series1: Object[] = [];
  public yValue: number[] = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
    13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
    41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
  public chartLoad(): void {
    let i: number;
    let j: number = 0;
    for (i = 1973; i <= 2013; i++) {
      this.series1.push({ x: i, y: this.yValue[j] });
      j++;
    }
  }
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 10,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    this.chartLoad();
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Linear' backwardForecast={5} width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Backward Forecasting

The value set for the backwardForecast is used to determine the past trends.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.series1 = [];
        this.yValue = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
            13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
            41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 10,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    chartLoad() {
        let i;
        let j = 0;
        for (i = 1973; i <= 2013; i++) {
            this.series1.push({ x: i, y: this.yValue[j] });
            j++;
        }
    }
    render() {
        this.chartLoad();
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Linear' backwardForecast={5} width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';


class App extends React.Component<{}, {}> {

  public series1: Object[] = [];
  public yValue: number[] = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
    13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
    41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
  public chartLoad(): void {
    let i: number;
    let j: number = 0;
    for (i = 1973; i <= 2013; i++) {
      this.series1.push({ x: i, y: this.yValue[j] });
      j++;
    }
  }
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 10,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    this.chartLoad();
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Linear' backwardForecast={5} width={3} marker={this.marker}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Show or hide a trendline

You can show or hide the trendline by setting trendline visible property.

Source

Preview

index.jsx

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject, Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category } from '@syncfusion/ej2-react-charts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.series1 = [];
        this.yValue = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
            13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
            41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
        this.primaryxAxis = { title: 'Months', majorGridLines: { width: 0 } };
        this.primaryyAxis = {
            title: 'Rupees against Dollars', interval: 10,
            lineStyle: { width: 0 }, majorTickLines: { width: 0 }
        };
        this.tooltip = { enable: true };
        this.chartarea = { border: { width: 0 } };
        this.marker = { visible: false };
    }
    chartLoad() {
        let i;
        let j = 0;
        for (i = 1973; i <= 2013; i++) {
            this.series1.push({ x: i, y: this.yValue[j] });
            j++;
        }
    }
    render() {
        this.chartLoad();
        return <ChartComponent id='charts' primaryXAxis={this.primaryxAxis} primaryYAxis={this.primaryyAxis} tooltip={this.tooltip} chartArea={this.chartarea} title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]}/>
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective type='Linear' visible={false}>
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

import * as React from "react";
import * as ReactDOM from "react-dom";
import { Browser } from '@syncfusion/ej2-base';
import {
    ChartComponent, SeriesCollectionDirective, SeriesDirective, TrendlineDirective, TrendlinesDirective, Inject,
    Tooltip, LineSeries, ScatterSeries, SplineSeries, Trendlines, Category, ChartTheme
    ,AxisModel,TooltipSettingsModel,ChartAreaModel
} from '@syncfusion/ej2-react-charts';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import { NumericTextBoxComponent } from '@syncfusion/ej2-react-inputs';
import { SampleBase } from '../common/sample-base';
import { PropertyPane } from '../common/property-pane';
import { EmitType } from '@syncfusion/ej2-base';

class App extends React.Component<{}, {}> {

  public series1: Object[] = [];
  public yValue: number[] = [7.66, 8.03, 8.41, 8.97, 8.77, 8.20, 8.16, 7.89, 8.68, 9.48, 10.11, 11.36, 12.34, 12.60, 12.95,
    13.91, 16.21, 17.50, 22.72, 28.14, 31.26, 31.39, 32.43, 35.52, 36.36,
    41.33, 43.12, 45.00, 47.23, 48.62, 46.60, 45.28, 44.01, 45.17, 41.20, 43.41, 48.32, 45.65, 46.61, 53.34, 58.53];
  public chartLoad(): void {
    let i: number;
    let j: number = 0;
    for (i = 1973; i <= 2013; i++) {
      this.series1.push({ x: i, y: this.yValue[j] });
      j++;
    }
  }
  public primaryxAxis: AxisModel = { title: 'Months', majorGridLines: { width: 0 } };
  public primaryyAxis: AxisModel = {
    title: 'Rupees against Dollars', interval: 10,
    lineStyle: { width: 0 }, majorTickLines: { width: 0 }
  };
  public tooltip: TooltipSettingsModel = { enable: true };
  public chartarea: ChartAreaModel = { border: { width: 0 } };
  public marker = { visible: false };

  render() {
    this.chartLoad();
    return <ChartComponent id='charts'
      primaryXAxis={this.primaryxAxis}
      primaryYAxis={this.primaryyAxis}
      tooltip={this.tooltip}
      chartArea={this.chartarea}
      title='Historical Indian Rupee Rate (INR USD)'>
      <Inject services={[Category, Tooltip, ScatterSeries, SplineSeries, LineSeries, Trendlines]} />
      <SeriesCollectionDirective>
        <SeriesDirective dataSource={this.series1} xName='x' yName='y' name='Apple Inc' type='Scatter' fill='#0066FF'>
          <TrendlinesDirective>
            <TrendlineDirective  type='Linear' visible={false} >
            </TrendlineDirective>
          </TrendlinesDirective>
        </SeriesDirective>
      </SeriesCollectionDirective>
    </ChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));

Contents

Linear
Exponential
Logarithmic
Polynomial
Power
Moving Average
Forecasting
Show or hide a trendline

Contents

Linear
Exponential
Logarithmic
Polynomial
Power
Moving Average
Forecasting
Show or hide a trendline

Please provide additional information

Thank you for your feedback and comments.We will rectify this as soon as possible!