3.1 - Basic Chart Controls

The Chart is an interactive widget that allows a user to visualize the stock price information over time.

A chart is a graphical representation of the stock prices in a given period of time. In order to simplify the usage of the chart, two colors were introduced, red and green. Red indicates the times when the stock was down, and green indicates the times when the stock was up.

The default chart style is the Candle Stick chart.

Generally, candlestick charts are considered more visually appealing and easier to interpret. A trader can easily compare the relationship between the open and close, as well as, the high and low. Hollow candlesticks, where the close price is bigger than the open price, indicate buying pressure. Filled candlesticks, where the close price is less than the open price, indicate selling pressure.

Additionally, there is a table on top of the chart that helps the user read the chart. Its columns – Time, Open, Close, High, Low, Volume, Bid, Ask – provide detailed information about the stocks in a given minute. The table gets populated when the mouse cursor is hovering over the chart. See the following table for further explanation: 




The time at which a stock got a certain price.


The price that is the opening price of an exchange on a given trading day. It is important, especially for those interested in measuring short-term results, such as day traders.


The final price at which a stock is traded on a given trading day. The close price is the most up-to-date valuation of a stock until trading commences on the next trading day.


The highest price on a given trading day.


The lowest price on a given trading day.


The number of shares traded on a given trading day.


The price at which a buyer is willing to buy a stock.


The price at which a seller is willing to sell a stock.

The user can decide how much detail should be included in the chart. The timeline range goes from last 30 minutes through last year. Similarly, it’s possible to decide if the data is shown in 1-, 2-, 3-, 15-, or 30-minute and 1-day intervals. The style of the chart can be selected from the available candles, lines, or bars.

A vast range of other tools, alerts, and indicators can be chosen from. They are all described in the subsequent chapters.


This is the default behavior.

Panning is achieved by clicking, holding and moving the mouse left or right (dragging). It allows to traverse the available data time line for the selected period.


Zooming is achieved in one of two ways:

  • Using the buttons at the bottom left of the chart widget ( and )
  • Using the scrollwheel on your mouse

Last Traded Price

The last trade price is identified on the chart by a green tick indicating the price that moves along the right edge of the chart.

Cursor Information

When hovering over a chart, the cursor will be identified by a vertical and a horizontal line that provide the current values at the cursor position, respectively time and price.

Additionally, the chart information panel will provide the hovered candle information.

<< 2.8 - Basic & Custom Scanners 3.2 - Chart time range and interval >> 
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