Candlestick chart is a type of the financial chart that is used to visualize price movements and is often used for decision making in stock, trading and foreign exchange.
Each “candlestick” typically shows one day and represents all four important pieces of information for that day: open, high, low and close values. The filled part of the candlestick is called “the body” and the lines above and below this part represent the high/low range and are called “shadows”. If the body is longer that means that there is more pressure in buying or selling, and if it is short that means that there is a small price movement.
There are two types of candlesticks:
- ‘White’ candlesticks show the behavior when the opening value is larger than the closing value (a loss),
- ‘Blue’ or filled candlesticks show the behavior when the opening value is less than the closing value (a gain).
As for the “shadows”, the upper shadow shows the difference between the high and the close value, and lower shadow shows the difference between the low and the open value.
- One string or date column supported (will be used for vertical axis)
- Other columns should have numerical values.
- A minimum of 5 columns is required (4 numerical columns and one string or date column).