Advanced BB Bands with Plot

一昨日

This code implements an advanced version of Bollinger Bands with additional moving averages, ATR-based bands, step lines, market direction indicators, and real-time data display. Here’s a breakdown of the functionality:

1. Inputs and Parameters:
length: The base period used for calculating the moving averages and the typical price.
atr_length: The length used for calculating the Average True Range (ATR).
step_length: The period for calculating step lines (highest high and lowest low over a given period).
2. Core Calculations:
Typical Price: (high + low + close) / 3 is the base for the moving averages.
ATR: ta.atr(atr_length) is used to create dynamic bands around the moving averages.
PL Dot: An average of the typical prices from the current and past two bars. This provides a short-term trend indicator.
3. Multiple Moving Averages (MAs):
Three simple moving averages (ma1, ma2, ma3) are calculated using different multiples of the base length. These help indicate short-, mid-, and long-term trends.
4. Step Lines:
Step Up: Highest close over the step_length.
Step Down: Lowest close over the step_length. These act as short-term support and resistance levels.
5. Outer Bands:
Upper Band: ma1 + 2 * ATR, an upper boundary based on ATR volatility.
Lower Band: ma1 - 2 * ATR, a lower boundary. Together, these form a dynamic range around the short-term moving average.
6. Market Direction:
Bullish or Bearish condition is determined by comparing ma1 and ma2. If ma1 is above ma2, the market is bullish; otherwise, it's bearish. This decision is displayed on the TradingView chart using a table.
7. Visual Elements:
Moving Averages (ma1, ma2, ma3): Plotted in different colors (blue, purple, white) to indicate different timeframes.
PL Dot: A step line plot for the PL Dot, which helps in spotting short-term trends.
Step Lines: Step-up and step-down levels plotted in lime and red, respectively.
Outer Bands: Upper and lower ATR-based bands plotted in aqua, with a filled region between the bands for easy visualization of price volatility.
Candlestick Coloring: Green bars for bullish and red for bearish price action.
8. Real-Time Board Display:
A table is created in the top-right corner of the chart to display:
The current closing price.
The market direction ("Bullish" or "Bearish").
The PL Dot value. The table updates on the most recent bar (barstate.islast).
9. Dynamic Labels:
On the most recent bar, labels are added dynamically to the upper and lower bands and the ma1. These labels help in identifying the values of key indicators directly on the chart.
10. Signals and Alerts:
Bullish and Bearish Cross: Visual signals are plotted on the chart when ma1 crosses above or below ma2. These are represented as up and down triangles, providing potential buy/sell signals.
Key Features Summarized:
Multi-Timeframe Moving Averages: 3 MAs based on different timeframes.
Dynamic ATR Bands: ATR-based upper and lower boundaries for volatility measurement.
Step Lines: Short-term high and low lines for support/resistance.
PL Dot: A short-term trend identifier.
Real-Time Dashboard: Live updates of price, trend, and PL Dot on the chart.
Visual Alerts: Dynamic labeling and crossover signals to assist in decision-making.
This script is designed for traders who want to track price movement within bands, evaluate trends across multiple timeframes, and visualize short-term market direction with dynamic alerts.