Technical Indicators

6 Jun 202316 minutes to read

EjChart control supports 10 types of technical indicators.

Bind data to render the indicator

You can bind the series dataSource to the indicator by setting the specific series name to the indicator by using the indicators.seriesName property.

JAVASCRIPT

"use strict";
        //  ...
        //Initializing Series
        var series=[{
            dataSource: chartData,
            xName: "xDate",
            high: "High",
            low: "Low",
            open: "Open",
            close: "Close", 
            //Set name to series
            name: 'Hilo',
            //  ...
        }];

        //Initializing Indicators    
        var indicators= [{
            //Set Hilo series dataSource to indicator using seriesName
            seriesName: "Hilo",
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			series={series}
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Also, you can add data to the indicator directly by using the dataSource option of the indicator.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
            /Add dataSource to indicator directly
            dataSource: chartData,
            xName: "xDate",
            high: "High",
            low: "Low",
            open: "Open",
            close: "Close",                
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Indicator Types

Accumulation Distribution

To create an Accumulation Distribution indicator, set the indicators.type as “accumulationdistribution”. Accumulation Distribution require ‘volume’ field additionally with the dataSource to calculate the signal line.

JAVASCRIPT

"use strict";
        //  ...
        //Initializing Series
        var series=[{
            name: "Hilo",
            dataSource: chartData,
            xName: "xDate",
            high: "High",
            low: "Low",
            open: "Open",
            close: "Close",
            //Add additional volume field to data source for accumulation distribution
            volume: "Volume",
            //  ...
        }];

        //Initializing Indicators    
        var indicators= [{
            seriesName: "Hilo",
            //Set indicator type
            type: "accumulationdistribution", 
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			series={series}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the Accumulation Distribution indicator online demo sample.

Average True Range (ATR)

You can create an ATR indicator by setting the indicators.type as “atr” in the indicators.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "atr", 
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the ATR indicator online demo sample.

Bollinger Band

Bollinger Band indicator is created by setting the indicators.type as “bollingerband”. It contains three lines, namely upper band, lower band and signal line. Bollinger Band default value of the period is 14 and standardDeviations is 2.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "bollingerband", 
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the Bollinger Band indicator online demo sample.

Exponential Moving Average (EMA)

To render an EMA indicator, you have to set the indicators.type as “ema”.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "ema", 
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the EMA indicator online demo sample.

Momentum

Momentum Technical indicator is created by setting the indicators.type as “momentum”. The momentum indicator renders two lines, namely upper band and signal line. Upper band always rendered at the value 100 and the signal line is calculated based on the momentum of the data.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "momentum", 
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the Momentum indicator online demo sample.

Moving Average Convergence Divergence (MACD)

To render an MACD indicator, you have to set the indicators.type as “macd”. MACD indicator contains MACD line, Signal line and Histogram column. Histogram is used to differentiate MACD and signal line.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "macd", 
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the MACD indicator online demo sample.

macdType

By using the macdType enumeration property, you can change the MACD rendering as line, histogram or both.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "macd", 
            //Set macd draw type
            macdType: "histogram", 
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Relative Strength Index (RSI)

To render the RSI indicator, set the indicators.type as “rsi”. It contains three lines, namely upper band, lower band and signal line. Upper and lower band always render at value 70 and 30 respectively and signal line is calculated based on the RSI formula.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "rsi",
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the RSI indicator online demo sample.

Simple Moving Average (SMA)

To render the SMA indicator, you should specify the indicators.type as “sma”.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "sma",
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the SMA indicator online demo sample.

Stochastic

For the Stochastic indicator, you need to set the indicators.type as “stochastic”. The Stochastic indicator renders four lines namely, upper line, lower line, stochastic line and the signal line. Upper line always rendered at value 80 and the lower line is rendered at value 20. Stochastic and Signal Lines are calculated based on the stochastic formula.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "stochastic",
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the stochastic indicator online demo sample.

Triangular Moving Average (TMA)

To render the TMA indicator, you should specify the indicators.type as “tma”.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
			//Set indicator type
            type: "tma",
            //  ...
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Click here to view the TMA indicator online demo sample.

To display the indicator tooltip, use visible option of the indicators.tooltip. Also, you can change and customize the tooltip color, border, format and font properties similar to the series tooltip.

JAVASCRIPT

"use strict";
        //Initializing Indicators    
        var indicators= [{
            //  ...
            tooltip: {
                 //Enable tooltip for indicator
                 visible: true
            },
	    }];
            //  ...	
		ReactDOM.render(
			<EJ.Chart id="default_chart_sample_0"
			indicators={indicators}
			>        
            
			</EJ.Chart>,
				document.getElementById('chart')
		);

Technical Indicators

Bind data to render the indicator

Indicator Types

Accumulation Distribution

Average True Range (ATR)

Bollinger Band

Exponential Moving Average (EMA)

Momentum

Moving Average Convergence Divergence (MACD)

macdType

Relative Strength Index (RSI)

Simple Moving Average (SMA)

Stochastic

Triangular Moving Average (TMA)

Enable Tooltip