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烛台Bollinger Bands

Candlestick Charts in Python

How to make interactive candlestick charts in Python with Plotly. Six examples of candlestick charts with Pandas, time series, 烛台Bollinger Bands and yahoo finance data.


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Plotly is 烛台Bollinger Bands a free and open-source graphing library for Python. We recommend you read our Getting Started guide for the latest installation or upgrade instructions, then move on to our Plotly Fundamentals tutorials or dive straight in to some Basic Charts tutorials.

The candlestick chart is a style of financial chart describing open, high, low and close for a given x coordinate (most likely time). The boxes represent the spread between the open and close values and the lines represent the spread between the low and high values. Sample points where the close value is higher (lower) then the open value are called increasing (decreasing). By default, increasing candles are drawn in green whereas decreasing are drawn in red.

Bollinger Bands

You can customize your charts with Bollinger Bands and over 50 indicators, TrendLines and systems/stops. If you are not sure what 烛台Bollinger Bands an indicator does, just click on the ? for a quick explanation.

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Full Screen

Control the number of days shown in the chart by clicking on the + - or expand/contract the data by dragging the highlighted area.

To add additional indicators to the chart select from the Oscillator list.

In addition to the traditional chart types such as Western bars or Japanese candlesticks we offer Bollinger Bars, our exclusive marriage of western bars and candlesticks encoded in color:

  • The area between the opening price and the closing price is known as the body
  • When the close is higher than the open the body is green .
  • When the close is lower than the open the body is red .
  • The blue sections of the bar fill out the remainder of the range, from the top of the body to the high and the bottom of the body to the low

In addition, the signals for the 烛台Bollinger Bands Bollinger Bands Methods are indicated on the charts:

For PRO users only: Arrows plotted on the charts indicate a signal for John Bollinger's four Methods. The arrow is green or red, up/down, to depict the bullish or bearish trend.

The number near the arrow indicates the system number generating the signal, per the following legend:

Bollinger 烛台Bollinger Bands 烛台Bollinger Bands Bands (BB)

ChartArt

Bollinger Bands (BB) are a widely popular technical analysis instrument created by John Bollinger in the early 1980’s. Bollinger Bands consist of a band of three lines which are plotted in relation to security prices. The line in the middle is usually a Simple Moving Average (SMA) set to a period of 20 days (the type of trend line and period can be changed by the trader; however a 20 day moving average is by far the most popular). The 烛台Bollinger Bands SMA then serves as a base for the Upper and Lower Bands which are used as a way to measure volatility by 烛台Bollinger Bands observing the relationship between the Bands and price. Typically the Upper and Lower Bands are set to two standard deviations away from the SMA (The Middle Line); however the number of standard deviations can also be adjusted by the trader.

Read more about Bollinger Bands.

USDCAD: Bermaui Variety Averages Bands [Loxx]

Bermaui Variety Averages Bands is a reverse Bollinger Bands indicator with Loxx's Variety Moving Averages and Loxx's Expanded Source Types. What are Bermaui Bands? Bermaui Bands (BB) is a technical analysis tool that help filter between ranging and trending price movements. A buy signal is made when price crosses above the upper band, a sell signal is made.

Bollinger Bands: What They Are and How to Use Them

Bollinger Bands® help you identify sharp, short-term price movements and potential entry and 烛台Bollinger Bands exit points.

Flexible and visually intuitive to many traders, Bollinger Bands® can be a helpful technical analysis tool. Invented in 1983 by John Bollinger, they’re designed to help traders evaluate price action and a stock’s volatility.

Before we get to how they can do that, let’s talk about what they are and what they look like. A Bollinger Band consists of a middle band (which is a moving average) and an upper and lower band. These upper and lower bands are set above and below the moving average by a certain number of standard deviations of price, thus incorporating volatility. The general principle is that by comparing a stock’s position relative to the bands, a trader may be able to determine if a stock’s price is relatively low or relatively high. Further, the width of the band can be an indicator of its volatility (narrower bands indicate less volatility while wider ones indicate higher volatility).

Bollinger Bands typically use a 20-period moving average, where the “period” could be 5 minutes, an hour or a day. By default, the upper and lower bands are set two standard deviations above and below the moving average. However, traders can customize the number of periods in the moving average as well as the number of deviations.

Figure 1: Bollinger Band activity over the course 烛台Bollinger Bands of 20 days.

Bollinger Band activity over the course of 20 days.

Using Bollinger Bands

Before we discuss how to use Bollinger Bands, it’s important to note: When the price touches the upper band, it doesn’t necessarily mean that you should sell. Similarly, when the price touches the lower band, it doesn’t necessarily mean you should buy. In fact, take it from John Bollinger himself who said, “There is absolutely nothing about a tag of a band that in and of itself is a signal.”

Prices can “walk the band” during a strong down- or uptrend. This means that there are repeated instances of a price touching or breaking through the lower or upper band. That’s why you may not want to take action when the price touches either band—you might, instead, prefer to wait and look for chart patterns like the “double bottom,” a “classic M top,” or a “three pushes to high” formation. Let’s talk about these chart patterns more:

Double bottom

A double bottom occurs when there is a 烛台Bollinger Bands fall in price, followed by a rise, followed by another fall that is close to the previous low, and finally another rise.

To identify a double bottom, look for a price that has touched the lower band and wait to see where the next low occurs. A price that reacts and rises close to the middle band, followed by a second low inside the lower band, suggests that the price is positioned for an upward move—a good time for traders to buy.

Without the Bollinger Band, the stock could look like it is trending down on the second low, especially if the second low is lower than the first. But with the Bollinger Band, the second low may indicate that the stock could be preparing for an uptrend.