Cari dalam skrip untuk "弘历投教boll指标代码分析"
bollingerBandsV2Library "bollingerBandsV2"
Bollinger bands related functions
get_multiple_bollinger_bands(stdv1, stdv2, stdv3, stdv4, stdv5, stdv6, stdv7, length, source)
: Calculates 7 sets of bollinger bands, with 7 different standard deviations
Parameters:
stdv1 (float) : (simple int): standard deviation 1
stdv2 (float) : (simple int): standard deviation 2
stdv3 (float) : (simple int): standard deviation 3
stdv4 (float) : (simple int): standard deviation 4
stdv5 (float) : (simple int): standard deviation 5
stdv6 (float) : (simple int): standard deviation 6
stdv7 (float) : (simple int): standard deviation 7
length (simple int) : (simple int): Length for the bands
source (float) : (simple float): source for the calculation
Returns: : Returns 8 levels plus the range of all the levels.
get_bb_volatility(bb_highest, bb_lowest, ma_length, lookback)
: Provides a volatility indicator based on Bollinger Bands, and indicates wheather the volatility is increasing or decreasing.
Parameters:
bb_highest (float) : (simple float): Top Bollinger Band on which to calculate the range.
bb_lowest (float) : (simple float): Bottom Bollinger Band on which to calculate the range.
ma_length (simple int) : (simple int): Length to use in the smoothing of Bollinger Bands range.
lookback (int) : (simple int): Lookback period to identify a change in the Bollinger Bands range.
Returns: : Returns 8 levels plus the range of all the levels.
get_bbVolatility_data(source, length, stdv1, stdv2, stdv3, stdv4, stdv5, stdv6, stdv7, trend_direction)
: Generates Bollinger Bands Volatility
Parameters:
source (float) : (float): Source for Bollinger Bands
length (simple int) : (int): Length for Bollinger Bands
stdv1 (int) : (int): Standard Deviation 1
stdv2 (int) : (int): Standard Deviation 2
stdv3 (int) : (int): Standard Deviation 3
stdv4 (int) : (int): Standard Deviation 4
stdv5 (int) : (int): Standard Deviation 5
stdv6 (int) : (int): Standard Deviation 6
stdv7 (int) : (int): Standard Deviation 7
trend_direction (string) : (string): Current direction of the trend
Returns: : Returns a map with the levels, plus direction flag and the data table
B.Bands | Augmented | Intra-range | Long-OnlyHere you have the essential trading engine based on Bollinger Bands .
The idea behind is to trade the intra-range of the bands.
How is going to work?
Define which Bollinger Bands we want to use. Classic Bollinger Bands or Augmented Bollinger Bands . Without selecting, the algorithm doesn't show a strategy.
Define the length of the Moving Average and the Standard Deviation by default the classic 20-2.
Define the Bollinger Bands Spread Max Range (Upper-Lower) to be able to determine wheter or not you're in a price range or potential breakout.
Define data source to trigger exit and entry points.
Define profit based on Middle Band or Opposite Band.
Define Stop Loss % and activate Trailing Stop if desired with the percentage required.
Determine if you want to sell only on profit after triggering the entry signal. * Note Stop Loss remains activated.
Choose a date range if you want to study a specific period.
Bear in mind, this is the essential trading engine, open for you to test, try and improve under your requirements. You can determinate when is the ideal market to implement it based on many other indicators. Maybe you wish to change the stop loss settings for ATR, previous low, etc. Totally up to you.
Note the script comes with initial capital, fee % and slippage by deault. This may change for your assets. Make sure you define it in advance.
NOTE: If you trade assets such BTC, you must update the initial capital. By default 5000 (USD) The script doesn't support fraction trading such 0.01BTC.
Will be updated on next version.
Feel free to get in touch if you've got any question.
Breakdown OscillatorThis is an indicator I made, based on the observation that the longer the price action hugs the bottom bollinger band, the greater the danger of a breakdown occurring (price decline). Essentially its a moving average of the difference between close price and the bottom bollinger band, divided by the bottom bollinger band; I like to use 1.5 standard deviations for the 20 day bollinger band. When it crosses below zero there is increased danger of a breakdown, although of course it could turn right around and go up again. In fact if it does turn around sharply from near zero it can be a good time to buy in the context of a pullback within an uptrend. I also have included the 'slope factor' which makes the indicator more negative based on the rate of downward movement of the bollinger moving average (set to 0 to omit this modification). The indicator can be used just for exits or can be used for entry signals when crossing over the green bar if desired. In the example chart you can see the price hitting the lower band or crossing below the 50dMA plenty of times on the way up while the indicator says to hold tight. When the breakdown comes its after a prolonged period of low volatility (band squeeze) on the lower side of the moving average so the signal comes quickly - they won't all be this good of course. This indicator can also be used to help spot potential shorting candidates.
This indicator also works well on weekly charts; I like the 1 standard deviation with 16 to 24 week long period, 6 to 10 week short period and 30 buy level. Your mileage may vary, please do your own research.
bollingerBandsLibrary "bollingerBands"
Bollinger bands related functions
get_multiple_bollinger_bands(stdv1, stdv2, stdv3, stdv4, stdv5, stdv6, stdv7, length, source)
Parameters:
stdv1 (int)
stdv2 (int)
stdv3 (int)
stdv4 (int)
stdv5 (int)
stdv6 (int)
stdv7 (int)
length (simple int)
source (float)
get_bb_volatility(bb_highest, bb_lowest, ma_length, lookback)
Parameters:
bb_highest (float)
bb_lowest (float)
ma_length (simple int)
lookback (int)
Coin Bureau BB/EMA/RSI IndicatorThis indicator was inspired by Coin Bureau's How To Spot The Crypto Top video. In the video, Coin Bureau uses Bollinger bands, 7-period EMA and RSI to look for early signs of a top, thus presenting an opportunity to sell.
Using the basic principles found in the video, I've made a tentative indicator as a way to visualise all 3 indicators at once. Alerts will only fire when all 3 criteria are met:
Price closes outside 20-period Bollinger bands
Price closes ~2sd away from 7-period EMA
RSI is overbought or oversold
The indicator will also update in real-time and show when 1, 2 or all 3 conditions are satisfied. Additionally, there is built-in functionality to toggle historical/current alerts and users can set their own bounds for what constitutes a buy or sell alert.
This is just a personal project purely for edutainment purposes and should not be used to make financial decisions. This project is not affiliated with Coin Bureau.
Some caveats:
Using only 7 periods to calculate the standard deviation of price data will not lead to a statistically significant result, thus this figure may have no right being in the script. However, this was more to trial some techniques and to get acquainted with the pine scripting language.
As you can see, there are a lot of false positives. There are moments when the indicator flashes a sell alert only for the price to keep on rising. This is due to the specificity/sensitivity trade-off. The indicator has been tuned to give the optimal sensitivity (the more critical component). These are the best results I could find for this asset in this time frame.
BB%B StratSimple strategy to go long when price is below a bollinger band %B threshold, or go short when above a threshold.
Trades are closed when BB%B moves back to an opposite threshold.
Intended to be a relatively short time frame trade, usually only a few candles, and probably better on high time frames.
Bolinger strategy v1 openFind lows based on divergence on bollinger bands .
Works great on stocks and index, no success on forex.
Different stock/index requires different values.
Exit is not perfect, often on the safer side.
Example settings: NASDAQ:OMXS30, 30m: 25 0.452 0.42 0.453 2 62 20
Lower bbrower = buys harder dips, too low will cause buy during fall.
Higher bbrhigher = buys on lower dips
One of my first scripts, so code is not pretty
Cosmic Bands4 Bollinger Band channels with StdDev mult values of 1, 2, 4, and 4.5 (the last value can be changed in the indicator's settings).
Often shows better correlation with the log setting on.
BBliciousStandard Bollinger Band with :
- BB with 1 Standard Dev
- BB with 1.5 Standard Dev
- BB with 2..5 Standard Dev
Top and Bottom Ribbon Color Area
- Fill Area between Standard Dev 1 and 1.5 ( Top & Bottom )
Double Bollinger BandsOn fundamentally strong stocks for entry points. The area in the Gray lines is the best one to enter and reasonable valuation. The area in the Red lines indicates higher Valuation. The area in the Green lines indicates lower Valuation and better to be careful and avoid.
BolingerBands_Contraction_Bitcoin_dailyThe script visualises the contraction or tightness of the Bollinger Bands (example Bitcoin on the daily timeframe). The contraction values have to be adjusted for each asset/coin/stock and timeframe. See what works for you.
Fibonacci Bollinger Bands ExtendedAdded fibonacci extentions to -rashads script'
shows fibonacci retentions and extentions..
Strategy CCT Bollinger Band OscillatorThis strategy buy when ema crossover CCT BB oscillator and sell when crossunder. No SL neither TP only trailling stop at 1$. CCT BB oscillator is LaztBear indicator. Thanks to him.
