Candle Chart in Angular Charts

17 May 202524 minutes to read

Candle

The Candle series, similar to the Hilo Open Close series, is used to represent the low, high, open, and closing prices over time. It is commonly used in financial charts to visualize stock price movements.

To render a candle series in your chart, you need to follow a few steps to configure it correctly. Here’s a concise guide on how to do this:

  1. Set the series type: Define the series type as Candle in your chart configuration. This indicates that the data should be represented as a candle chart, providing a detailed view of stock price fluctuations by displaying the high, low, open, and close values for each time period.

  2. Inject the CandleSeries module: Use the @NgModule.providers method to inject the CandleSeriesService module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering candle series are available in your chart.

  3. Provide high, low, open, and close values: The Candle series requires five fields (x, high, low, open, and close) to accurately display the stock’s high, low, open, and close prices. Ensure that your data source includes these fields to create a detailed representation of stock price movements over time.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService,CandleSeriesService } from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';

@Component({
imports: [
         ChartModule
    ],

providers: [CategoryService,CandleSeriesService],
standalone: true,
    selector: 'app-container',
    template: ` <ejs-chart style='display:block;' id='chart-container' [primaryXAxis]='primaryXAxis' [primaryYAxis]='primaryYAxis' [title]='title' >
                <e-series-collection>
                    <e-series [dataSource]='data' type='Candle' xName='x' high='high' low='low' open='open' close='close' name='SHIRPUR-G'> </e-series>
                </e-series-collection>
     </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public title?: string;
    public primaryYAxis?: Object;
    public data?: Object[];

    ngOnInit(): void {
        this.data = [
            { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
            { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
            { x: 'Mar', open: 130, high: 170, low: 110, close: 150 },
            { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
            { x: 'May', open: 150, high: 170, low: 110, close: 130 }
            ];
        this.primaryXAxis = {
            title: 'Date',
            valueType: 'Category',
            };
        this.primaryYAxis = {
            title: 'Price', minimum: 100, maximum: 200, interval: 20,
            };
        this.title = 'Shirpur Gold Refinery Share Price';
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let candleData : Object[] =  [
            { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
            { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
            { x: 'Mar', open: 130, high: 170, low: 110, close: 150 },
            { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
            { x: 'May', open: 150, high: 170, low: 110, close: 130 }
            ];

Binding data with series

You can bind data to the chart using the dataSource property within the series configuration. This allows you to connect a JSON dataset or remote data to your chart. To display the data correctly, map the fields from the data to the chart series xName, high, low, open and close properties.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService,CandleSeriesService } from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';

@Component({
imports: [
         ChartModule
    ],

providers: [CategoryService,CandleSeriesService],
standalone: true,
    selector: 'app-container',
    template: ` <ejs-chart style='display:block;' id='chart-container' [primaryXAxis]='primaryXAxis' [primaryYAxis]='primaryYAxis' [title]='title' >
                <e-series-collection>
                    <e-series [dataSource]='data' type='Candle' xName='x' high='high' low='low' open='open' close='close' name='SHIRPUR-G'> </e-series>
                </e-series-collection>
     </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public title?: string;
    public primaryYAxis?: Object;
    public data?: Object[];

    ngOnInit(): void {
        this.data = [
            { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
            { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
            { x: 'Mar', open: 130, high: 170, low: 110, close: 150 },
            { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
            { x: 'May', open: 150, high: 170, low: 110, close: 130 }
            ];
        this.primaryXAxis = {
            title: 'Date',
            valueType: 'Category',
            };
        this.primaryYAxis = {
            title: 'Price', minimum: 100, maximum: 200, interval: 20,
            };
        this.title = 'Shirpur Gold Refinery Share Price';
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let candleData : Object[] =  [
            { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
            { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
            { x: 'Mar', open: 130, high: 170, low: 110, close: 150 },
            { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
            { x: 'May', open: 150, high: 170, low: 110, close: 130 }
            ];

Hollow Candles

Hollow candles in candle charts allow you to visually compare the current price with the previous price by coloring them differently. The candles are filled or left hollow based on the following criteria:

States Description
Filled Candlesticks are filled when the close value is lesser than the open value
Unfilled Candlesticks are unfilled when the close value is greater than the open value

The color of the candle will be defined by comparing it with previous values. The bear color will be applied when the current closing value is greater than the previous closing value. The bull color will be applied when the current closing value is less than the previous closing value.

By default, the bullFillColor is set to red and the bearFillColor is set to green.

Solid Candles

The enableSolidCandles property is used to enable or disable solid candles. By default, it is set to false. The fill color of the candle will be determined by its opening and closing values.

  • The bearFillColor will be applied when the opening value is less than the closing value.
  • The bullFillColor will be applied when the opening value is greater than the closing value.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService,CandleSeriesService } from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';
import { candleData } from './datasource';
@Component({
imports: [
         ChartModule
    ],

providers: [CategoryService,CandleSeriesService],
standalone: true,
    selector: 'app-container',
    template: ` <ejs-chart style='display:block;' id='chart-container' [primaryXAxis]='primaryXAxis' [primaryYAxis]='primaryYAxis'
                [title]='title'>
                <e-series-collection>
                    <e-series [dataSource]='data' type='Candle' xName='x' high='high' low='low' open='open' close='close' name='SHIRPUR-G' bearFillColor= '#e56590' bullFillColor= '#f8b883'
                     [enableSolidCandles]='enableSolidCandles'> </e-series>
                </e-series-collection>
     </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public title?: string;
    public primaryYAxis?: Object;
    public data?: Object[];
    public enableSolidCandles: Object = { enable: true };
    ngOnInit(): void {
        this.data = candleData;
        this.primaryXAxis = {
            title: 'Date',
            valueType: 'Category',
            };
        this.primaryYAxis = {
            title: 'Price in Dollar', minimum: 100, maximum: 200, interval: 20,
            };
        this.title = 'Financial Analysis';
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let candleData : Object[] =  [
            { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
            { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
            { x: 'Mar', open: 130, high: 170, low: 110, close: 150 },
            { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
            { x: 'May', open: 150, high: 170, low: 110, close: 130 }
            ];

Empty points

Data points with null or undefined values are considered empty. Empty data points are ignored and not plotted on the chart.

Mode

Use the mode property to define how empty or missing data points are handled in the series. The default mode for empty points is Gap.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService,CandleSeriesService } from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';
import { chartData } from './datasource';

@Component({
imports: [
         ChartModule
    ],

providers: [CategoryService,CandleSeriesService],
standalone: true,
    selector: 'app-container',
    template: ` <ejs-chart style='display:block;' id='chart-container' [primaryXAxis]='primaryXAxis' [primaryYAxis]='primaryYAxis' [title]='title' >
                <e-series-collection>
                    <e-series [dataSource]='data' type='Candle' xName='x' high='high' low='low' open='open' close='close' name='SHIRPUR-G' [emptyPointSettings]='emptyPointSettings'> </e-series>
                </e-series-collection>
     </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public title?: string;
    public primaryYAxis?: Object;
    public data?: Object[];
    public emptyPointSettings?: object;
    ngOnInit(): void {
        this.data = chartData;
        this.primaryXAxis = {
            title: 'Date',
            valueType: 'Category',
            };
        this.primaryYAxis = {
            title: 'Price', minimum: 100, maximum: 200, interval: 20,
            };
        this.emptyPointSettings= {
                mode: 'Average'
            }
        this.title = 'Shirpur Gold Refinery Share Price';
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let chartData: Object[] = [
    { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
    { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
    { x: 'Mar', open: null, high: 170, low: 110, close: 150 },
    { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
    { x: 'May', open: 150, high: 170, low: 110, close: 130 },
  ];

Fill

Use the fill property to customize the fill color of empty points in the series.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService,CandleSeriesService } from '@syncfusion/ej2-angular-charts'



import { Component, OnInit } from '@angular/core';
import { chartData } from './datasource';

@Component({
imports: [
         ChartModule
    ],

providers: [CategoryService,CandleSeriesService],
standalone: true,
    selector: 'app-container',
    template: ` <ejs-chart style='display:block;' id='chart-container' [primaryXAxis]='primaryXAxis' [primaryYAxis]='primaryYAxis' [title]='title' >
                <e-series-collection>
                    <e-series [dataSource]='data' type='Candle' xName='x' high='high' low='low' open='open' close='close' name='SHIRPUR-G' [emptyPointSettings]='emptyPointSettings'> </e-series>
                </e-series-collection>
     </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public title?: string;
    public primaryYAxis?: Object;
    public data?: Object[];
    public emptyPointSettings?: object;
    ngOnInit(): void {
        this.data = chartData;
        this.primaryXAxis = {
            title: 'Date',
            valueType: 'Category',
            };
        this.primaryYAxis = {
            title: 'Price', minimum: 100, maximum: 200, interval: 20,
            };
        this.emptyPointSettings= {
                mode: 'Average',  fill: 'blue'
            }
        this.title = 'Shirpur Gold Refinery Share Price';
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let chartData: Object[] = [
    { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
    { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
    { x: 'Mar', open: null, high: 170, low: 110, close: 150 },
    { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
    { x: 'May', open: 150, high: 170, low: 110, close: 130 }
];

Events

Series render

The seriesRender event allows you to customize series properties, such as data, fill, and name, before they are rendered on the chart.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService,CandleSeriesService } from '@syncfusion/ej2-angular-charts'
import { ISeriesRenderEventArgs } from '@syncfusion/ej2-charts'



import { Component, OnInit } from '@angular/core';

@Component({
imports: [
         ChartModule
    ],

providers: [CategoryService,CandleSeriesService],
standalone: true,
    selector: 'app-container',
    template: ` <ejs-chart style='display:block;' (seriesRender)='seriesRender($event)' id='chart-container' [primaryXAxis]='primaryXAxis' [primaryYAxis]='primaryYAxis' [title]='title' >
                <e-series-collection>
                    <e-series [dataSource]='data' type='Candle' xName='x' high='high' low='low' open='open' close='close' name='SHIRPUR-G'> </e-series>
                </e-series-collection>
     </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public title?: string;
    public primaryYAxis?: Object;
    public data?: Object[];

    ngOnInit(): void {
        this.data = [
            { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
            { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
            { x: 'Mar', open: 130, high: 170, low: 110, close: 150 },
            { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
            { x: 'May', open: 150, high: 170, low: 110, close: 130 }
            ];
        this.primaryXAxis = {
            title: 'Date',
            valueType: 'Category',
            };
        this.primaryYAxis = {
            title: 'Price', minimum: 100, maximum: 200, interval: 20,
            };
        this.title = 'Shirpur Gold Refinery Share Price';
    }
    public seriesRender(args: ISeriesRenderEventArgs){
        args.series.bearFillColor = '#ff6347';
        args.series.bullFillColor = '#009cb8';
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let candleData : Object[] =  [
            { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
            { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
            { x: 'Mar', open: 130, high: 170, low: 110, close: 150 },
            { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
            { x: 'May', open: 150, high: 170, low: 110, close: 130 }
            ];

Point render

The pointRender event allows you to customize each data point before it is rendered on the chart.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { ChartModule } from '@syncfusion/ej2-angular-charts'
import { CategoryService,CandleSeriesService } from '@syncfusion/ej2-angular-charts'
import { IPointRenderEventArgs } from '@syncfusion/ej2-charts'



import { Component, OnInit } from '@angular/core';

@Component({
imports: [
         ChartModule
    ],

providers: [CategoryService,CandleSeriesService],
standalone: true,
    selector: 'app-container',
    template: ` <ejs-chart style='display:block;' (pointRender)='pointRender($event)' id='chart-container' [primaryXAxis]='primaryXAxis' [primaryYAxis]='primaryYAxis' [title]='title' >
                <e-series-collection>
                    <e-series [dataSource]='data' type='Candle' xName='x' high='high' low='low' open='open' close='close' name='SHIRPUR-G'> </e-series>
                </e-series-collection>
     </ejs-chart>`
})
export class AppComponent implements OnInit {
    public primaryXAxis?: Object;
    public title?: string;
    public primaryYAxis?: Object;
    public data?: Object[];

    ngOnInit(): void {
        this.data = [
            { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
            { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
            { x: 'Mar', open: 130, high: 170, low: 110, close: 150 },
            { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
            { x: 'May', open: 150, high: 170, low: 110, close: 130 }
            ];
        this.primaryXAxis = {
            title: 'Date',
            valueType: 'Category',
            };
        this.primaryYAxis = {
            title: 'Price', minimum: 100, maximum: 200, interval: 20,
            };
        this.title = 'Shirpur Gold Refinery Share Price';
    }
    public pointRender(args: IPointRenderEventArgs){
        args.fill = '#ff6347';
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));
export let candleData : Object[] =  [
            { x: 'Jan', open: 120, high: 160, low: 100, close: 140 },
            { x: 'Feb', open: 150, high: 190, low: 130, close: 170 },
            { x: 'Mar', open: 130, high: 170, low: 110, close: 150 },
            { x: 'Apr', open: 160, high: 180, low: 120, close: 140 },
            { x: 'May', open: 150, high: 170, low: 110, close: 130 }
            ];

See Also