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Annotation in React Accumulation Chart component

22 Jul 2021 / 3 minutes to read

The annotations are used to mark the specific area of interest in the chart area with texts, shapes or images.

By using the content option of annotation property, you can specify the Id of the element that needs to be displayed in the chart area.

Source
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index.tsx
index.jsx
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import * as React from "react";
import * as ReactDOM from "react-dom";
import { AccumulationChartComponent, AccumulationSeriesCollectionDirective, AccumulationSeriesDirective, Inject,AccumulationAnnotation, AccumulationAnnotationsDirective, AccumulationAnnotationDirective}
from'@syncfusion/ej2-react-charts';
import { accData } from 'datasource.ts';

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

  public template: any = this.chartTemplate;
  public chartTemplate(): any {
    return (<div className='template'>
      <div style={{ border: '1px solid black', backgroundColor: '#f5f5f5', padding: '5px 5px 5px 5px' }}>13.5</div>
    </div>);
  };

  render() {
    return <AccumulationChartComponent id='charts' >
      <Inject services={[AccumulationAnnotation]} />
      <AccumulationAnnotationsDirective>
        <AccumulationAnnotationDirective content={this.template} region='Series' coordinateUnits='Point' x='Feb' y={13.5}>
        </AccumulationAnnotationDirective>
      </AccumulationAnnotationsDirective>
      <AccumulationSeriesCollectionDirective>
        <AccumulationSeriesDirective dataSource={accData} xName='x' yName='y'>
        </AccumulationSeriesDirective>
      </AccumulationSeriesCollectionDirective>
    </AccumulationChartComponent>
  }

};
ReactDOM.render(<App />, document.getElementById("charts"));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { AccumulationChartComponent, AccumulationSeriesCollectionDirective, AccumulationSeriesDirective, Inject, AccumulationAnnotation, AccumulationAnnotationsDirective, AccumulationAnnotationDirective } from '@syncfusion/ej2-react-charts';
import { accData } from 'datasource.ts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.template = this.chartTemplate;
    }
    chartTemplate() {
        return (<div className='template'>
      <div style={{ border: '1px solid black', backgroundColor: '#f5f5f5', padding: '5px 5px 5px 5px' }}>13.5</div>
    </div>);
    }
    ;
    render() {
        return <AccumulationChartComponent id='charts'>
      <Inject services={[AccumulationAnnotation]}/>
      <AccumulationAnnotationsDirective>
        <AccumulationAnnotationDirective content={this.template} region='Series' coordinateUnits='Point' x='Feb' y={13.5}>
        </AccumulationAnnotationDirective>
      </AccumulationAnnotationsDirective>
      <AccumulationSeriesCollectionDirective>
        <AccumulationSeriesDirective dataSource={accData} xName='x' yName='y'>
        </AccumulationSeriesDirective>
      </AccumulationSeriesCollectionDirective>
    </AccumulationChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

*Note: To use annotation feature in accumulation chart, we need to inject AccumulationAnnotation module into the services

Region

The annotation can be placed with respect to either Series or Chart.

Source
Preview
index.tsx
index.jsx
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import * as React from "react";
import * as ReactDOM from "react-dom";
import { AccumulationChartComponent, AccumulationSeriesCollectionDirective, AccumulationSeriesDirective, Inject,AccumulationAnnotation, AccumulationAnnotationsDirective, AccumulationAnnotationDirective}
from'@syncfusion/ej2-react-charts';
import { labelData } from 'datasource.ts';

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

    public template:any=this.chartTemplate;
    public chartTemplate(): any {
         return (<div className='template'>
                    <div style={{ border: '1px solid black' ,backgroundColor:'#f5f5f5', padding: '5px 5px 5px 5px'}}>13.5</div>
                </div>);
    };

    render(){
        return <AccumulationChartComponent id='charts' >
            <Inject services={ [AccumulationAnnotation] } />
            <AccumulationAnnotationsDirective >
                <AccumulationAnnotationDirective content={ this.template } region = 'Chart' coordinateUnits= 'Pixel' x= { 550} y= { 150}>
                </AccumulationAnnotationDirective>
            </AccumulationAnnotationsDirective>
            <AccumulationSeriesCollectionDirective >
                <AccumulationSeriesDirective dataSource ={ labelData } xName = 'x' yName= 'y' >
                </AccumulationSeriesDirective>
            </AccumulationSeriesCollectionDirective>
        </AccumulationChartComponent>
      }

   };
ReactDOM.render(<App />, document.getElementById("charts"));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { AccumulationChartComponent, AccumulationSeriesCollectionDirective, AccumulationSeriesDirective, Inject, AccumulationAnnotation, AccumulationAnnotationsDirective, AccumulationAnnotationDirective } from '@syncfusion/ej2-react-charts';
import { labelData } from 'datasource.ts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.template = this.chartTemplate;
    }
    chartTemplate() {
        return (<div className='template'>
                    <div style={{ border: '1px solid black', backgroundColor: '#f5f5f5', padding: '5px 5px 5px 5px' }}>13.5</div>
                </div>);
    }
    ;
    render() {
        return <AccumulationChartComponent id='charts'>
            <Inject services={[AccumulationAnnotation]}/>
            <AccumulationAnnotationsDirective>
                <AccumulationAnnotationDirective content={this.template} region='Chart' coordinateUnits='Pixel' x={550} y={150}>
                </AccumulationAnnotationDirective>
            </AccumulationAnnotationsDirective>
            <AccumulationSeriesCollectionDirective>
                <AccumulationSeriesDirective dataSource={labelData} xName='x' yName='y'>
                </AccumulationSeriesDirective>
            </AccumulationSeriesCollectionDirective>
        </AccumulationChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

Co-ordinate Units

Specifies the coordinate units of an annotation either in Pixel or Point.

Source
Preview
index.tsx
index.jsx
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import * as React from "react";
import * as ReactDOM from "react-dom";
import { AccumulationChartComponent, AccumulationSeriesCollectionDirective, AccumulationSeriesDirective, Inject,AccumulationAnnotation, AccumulationAnnotationsDirective, AccumulationAnnotationDirective}
from'@syncfusion/ej2-react-charts';
import { accData } from 'datasource.ts';

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

    public template:any=this.chartTemplate;
    public chartTemplate(): any {
         return (<div className='template'>
                    <div style={{ border: '1px solid black' ,backgroundColor:'#f5f5f5', padding: '5px 5px 5px 5px'}}>13.5</div>
                </div>);
    };

    render(){
        return <AccumulationChartComponent id='charts' >
            <Inject services={[AccumulationAnnotation]}/>
            <AccumulationAnnotationsDirective>
                <AccumulationAnnotationDirective content={ this.template} region='Series' coordinateUnits='Point' x='Feb' y={13.5}>
                </AccumulationAnnotationDirective>
            </AccumulationAnnotationsDirective>
            <AccumulationSeriesCollectionDirective>
                <AccumulationSeriesDirective dataSource ={accData}  xName='x' yName='y'>
                </AccumulationSeriesDirective>
            </AccumulationSeriesCollectionDirective>
        </AccumulationChartComponent>
     }

  };
ReactDOM.render(<App />, document.getElementById("charts"));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { AccumulationChartComponent, AccumulationSeriesCollectionDirective, AccumulationSeriesDirective, Inject, AccumulationAnnotation, AccumulationAnnotationsDirective, AccumulationAnnotationDirective } from '@syncfusion/ej2-react-charts';
import { accData } from 'datasource.ts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.template = this.chartTemplate;
    }
    chartTemplate() {
        return (<div className='template'>
                    <div style={{ border: '1px solid black', backgroundColor: '#f5f5f5', padding: '5px 5px 5px 5px' }}>13.5</div>
                </div>);
    }
    ;
    render() {
        return <AccumulationChartComponent id='charts'>
            <Inject services={[AccumulationAnnotation]}/>
            <AccumulationAnnotationsDirective>
                <AccumulationAnnotationDirective content={this.template} region='Series' coordinateUnits='Point' x='Feb' y={13.5}>
                </AccumulationAnnotationDirective>
            </AccumulationAnnotationsDirective>
            <AccumulationSeriesCollectionDirective>
                <AccumulationSeriesDirective dataSource={accData} xName='x' yName='y'>
                </AccumulationSeriesDirective>
            </AccumulationSeriesCollectionDirective>
        </AccumulationChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));

Alignment

The annotations can be moved vertically and horizontally from its default position by using verticalAlignment or horizontalAlignment properties. The verticalAlignment property takes value as Top, Bottom or Middle and the horizontalAlignment property takes value as Near, Far or Center.

Source
Preview
index.tsx
index.jsx
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { AccumulationChartComponent, AccumulationSeriesCollectionDirective, AccumulationSeriesDirective, Inject,AccumulationAnnotation, AccumulationAnnotationsDirective, AccumulationAnnotationDirective}
from'@syncfusion/ej2-react-charts';
import { accData } from 'datasource.ts';

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

    public template:any=this.chartTemplate;
    public chartTemplate(): any {
         return (<div className='template'>
                    <div style={{ border: '1px solid black' ,backgroundColor:'#f5f5f5', padding: '5px 5px 5px 5px'}}>13.5</div>
                </div>);
    };

    render(){
        return <AccumulationChartComponent id='charts' >
           <Inject services={[AccumulationAnnotation]}/>
           <AccumulationAnnotationsDirective>
                <AccumulationAnnotationDirective content={ this.template} region='Series' coordinateUnits='Point' x='Feb' y={13.5} verticalAlignment='Top' horizontalAlignment='Near'>
                </AccumulationAnnotationDirective>
           </AccumulationAnnotationsDirective>
           <AccumulationSeriesCollectionDirective>
                <AccumulationSeriesDirective dataSource ={accData}  xName='x' yName='y'>
                </AccumulationSeriesDirective>
            </AccumulationSeriesCollectionDirective>
        </AccumulationChartComponent>
    }

  };
ReactDOM.render(<App />, document.getElementById("charts"));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { AccumulationChartComponent, AccumulationSeriesCollectionDirective, AccumulationSeriesDirective, Inject, AccumulationAnnotation, AccumulationAnnotationsDirective, AccumulationAnnotationDirective } from '@syncfusion/ej2-react-charts';
import { accData } from 'datasource.ts';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.template = this.chartTemplate;
    }
    chartTemplate() {
        return (<div className='template'>
                    <div style={{ border: '1px solid black', backgroundColor: '#f5f5f5', padding: '5px 5px 5px 5px' }}>13.5</div>
                </div>);
    }
    ;
    render() {
        return <AccumulationChartComponent id='charts'>
           <Inject services={[AccumulationAnnotation]}/>
           <AccumulationAnnotationsDirective>
                <AccumulationAnnotationDirective content={this.template} region='Series' coordinateUnits='Point' x='Feb' y={13.5} verticalAlignment='Top' horizontalAlignment='Near'>
                </AccumulationAnnotationDirective>
           </AccumulationAnnotationsDirective>
           <AccumulationSeriesCollectionDirective>
                <AccumulationSeriesDirective dataSource={accData} xName='x' yName='y'>
                </AccumulationSeriesDirective>
            </AccumulationSeriesCollectionDirective>
        </AccumulationChartComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById("charts"));
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