Do you have trading data, looking for a way to effectively visualize it for your website or app project? This tutorial will break down the process needed to create such a chart into simple steps and provide a detailed explanation of the code. Because candlestick charts over longer time periods can encompass big price ranges, it’s nice to get additional details by hovering over the chart. When you move the mouse a crosshair follows its positions and highlights the exact time and price value at the edges. It also snaps to the candles on the time axis and the hovered candle changes its color. Finally, a small popup with the exact opening, closing, high, and low price of the hovered candle appears next to it.
Each candlestick represents information about the open, high, low, and close price of the day. Candlestick charts are widely used in technical analysis of price movement patterns. Themes are built in for the js chart and you can create the desired color scheme and reuse it whenever you want on any chart type.
When a user selects a point, its series may react in one of the following ways depending on the value of the selectionMode property. Data points that have the null value do not produce actual series points. Because of this, series may be drawn with unnecessary gaps where missing points should have been. To remove these gaps, set the ignoreEmptyPoints property to true. When a user pauses on a series, it may react in one of the following ways depending on the value of the hoverMode property.
HTML target to include ChartJs plugin to show a candlestick chart
- This example shows basic implementation of candlestick chart using OHLCSeries.
- Themes are built in for the js chart and you can create the desired color scheme and reuse it whenever you want on any chart type.
- If a series must have a unique argument field, specify the same property, but do so in the series object within the series array.
Declared in commonSeriesSettings, hoverStyle applies to all series in the chart. Declared in a series configuration object, hoverStyle applies to this particular series only. When there are multiple value axes in a chart, series need to know exactly which axis they are bound to. By default, all of them are bound to the first axis in the valueAxis array. To bind a series to another axis, assign the name of the axis to the axis series property.
Step-1: Adding Script and Style files
Step 5 overlaps a line chart of close points on the rendered candlestick chart. In the resulting JS candlestick chart, it is possible to observe how the EUR/USD currency pair traded over two years. That’s where I will put all the code for the JS candlestick chart.
Chart js uses a universal Series interface, which provides data for all chart types. This approach greatly simplifies programming and allows easy implementation of various data types including custom data objects. The library ships with a predefined set of all common data types – numbers, DateTime values and XML data. Also called a Japanese candlestick chart, this chart type is one of the most popular forms of financial and stock data visualization.
- The special StockPriceSeries class lets you easily specify StockPrice data, which consists of open, close, high and low values.
- You can easily draw simple 2D shapes and text, and that’s all we are going to need for candlestick charts.
- Specifies which data source field provides open values for points of a financial series.