VWAP with ADX Buy/Sell Signals and 50 MA Background

This Pine Script combines several technical indicators to create a comprehensive chart with buy and sell signals based on the ADX and VWAP, as well as background color changes depending on the price relative to the 50-period simple moving average (SMA). Here's a breakdown of what each part of the code does:

1. VWAP Settings
Anchor Period: You can select different periods such as "Session", "Week", "Month", etc. to define the anchor period for the VWAP.
Source: The source for VWAP is set to the typical price (hlc3).
Offset: Allows for shifting the VWAP by a specified amount.
2. ADX Settings
ADX Length: The period used to calculate the ADX.
ADX Smoothing: Used to smooth the ADX for better clarity.
ADX Threshold: Used to filter out weak trends (i.e., signals when ADX > 20).
3. ADX and VWAP Calculation
The ADX values are calculated using ta.dmi(), which returns the +DI, -DI, and ADX lines.
VWAP is calculated using ta.vwap(), based on the selected price source.
4. Buy/Sell Conditions
Buy Signal: A buy signal is generated when:
The +DI crosses above the -DI (indicating an uptrend).
The ADX is above 20 (indicating a strong trend).
The closing price is above the VWAP (indicating bullish market sentiment).
Sell Signal: A sell signal occurs when:
The -DI crosses above the +DI (indicating a downtrend).
The ADX is above 20 (indicating a strong trend).
The closing price is below the VWAP (indicating bearish market sentiment).
5. VWAP Bands
The standard deviation of the price is calculated using ta.stdev(), and the bands are plotted at multiples of the standard deviation (1, 2, and 3).
These bands are used to highlight possible overbought or oversold conditions.
6. 50-period SMA and Background Color
The script calculates a 50-period Simple Moving Average (SMA).
The background color is then changed based on whether the price is above or below the 50-period SMA. If the price is above the SMA, the background is green (bullish), and if it’s below, it’s red (bearish).
7. Plots
The script includes plots for the VWAP line, the ADX and DI lines (optional), and the upper and lower bands.
The buy and sell signals are plotted as shapes with text labels ("BUY" and "SELL") that appear below or above the price bars.
Final Notes:
Band Plots: Three levels of bands (green, olive, teal) are plotted using standard deviation multipliers (1, 2, and 3 times the standard deviation).
Background Color: The background color changes depending on whether the price is above or below the 50 SMA, giving a visual cue for bullish or bearish market conditions.
This indicator aims to offer a multi-faceted view of the market with trend-following signals (via ADX), VWAP for intraday support/resistance, and background coloring to indicate the current trend strength based on the 50 SMA.