AJ - RSI

# AJ - RSI — Multi-Timeframe RSI with Configurable Higher-TF Lock

## Overview
**AJ - RSI** is a clean, publish-ready Relative Strength Index that lets you **lock the RSI calculation to any timeframe you choose**, regardless of the timeframe your chart is on. By default it displays the **Monthly RSI (14)** on every chart — 1 minute, 1 hour, daily, weekly, monthly — so you always keep the higher-timeframe trend context in front of you while trading a lower timeframe.

## What makes it different
- **Timeframe-locked RSI:** Trade on a 15-minute chart while watching the true Monthly RSI. No need to flip charts.
- **Matches the built-in RSI exactly** on the requested timeframe (same length, same source, same math) — verified against TradingView's native RSI.
- **Non-repainting historical data.** Uses `request.security` with `barmerge.lookahead_off`, so no future-leak on closed bars.
- **Configurable RSI-based MA** (SMA / EMA / WMA / RMA) with adjustable length.
- **Three clear reference bands** — Overbought (80, red dotted), Midline (50, green solid), Oversold (30, green dotted) — with a subtle shaded zone for readability.

## How to use
- **Trend filter:** Monthly RSI > 50 = long-term uptrend bias; < 50 = downtrend bias. Trade lower-TF setups only in the direction of the higher-TF regime.
- **Momentum shifts:** A monthly RSI crossover above 50 often marks a durable trend change; crossunder below 50 signals loss of long-term momentum.
- **Overbought / Oversold:** Readings above 80 or below 30 on the higher timeframe highlight stretched conditions worthy of caution or mean-reversion attention.
- **RSI vs. its MA:** Use crossovers of the RSI and its moving average as an early momentum confirmation.
- **Weekly / Daily setups:** Change the Timeframe input to Weekly, Daily, or any other TF to reuse the same framework at different horizons.

## Inputs
**RSI**
- RSI Length (default 14)
- Source (default close)
- Timeframe — Chart, 1 min, 5 min, 1 Hour, 1 Day, 1 Week, 1 Month, Quarter (default 1 Month). Select "Chart" to follow the current chart timeframe.

**RSI Moving Average**
- MA Length (default 14)
- MA Type — SMA / EMA / WMA / RMA (default SMA)

**Levels**
- Upper Band (default 80, red dotted)
- Mid Band (default 50, green solid)
- Lower Band (default 30, green dotted)

## Built-in alerts
- RSI crosses above 50
- RSI crosses below 50
- RSI crosses above the Upper Band
- RSI crosses below the Lower Band

## Notes on behavior
- On the current (still-forming) higher-timeframe bar, the RSI updates in real time — the same way the built-in RSI would if you switched the chart to that timeframe. Historical bars are stable.
- The Line style / color / thickness of every plot and band can be adjusted from the indicator's **Style** tab.

## Disclaimer
This script is provided for educational and informational purposes only. It is not financial advice and does not constitute a recommendation to buy or sell any security. Past performance of any indicator does not guarantee future results. Always do your own research and manage your risk.

**Author:** Ayyanar Jayabalan

Sürüm Notları

## New features

### 1. Mansfield Relative Strength (vs Index) — *off by default*
A new module that measures how a stock is performing relative to a benchmark.
- Formula: `RS% = ((Stock / Index) / SMA(ratio, len) - 1) * 100`
- Positive = outperforming the benchmark; negative = underperforming
- Configurable benchmark (default `NSE:CNX500`) and smoothing length (default 50)
- Rendered as a **thin solid line**, green when above 0 and red when below 0
- Optional **dotted zero line** (also hidden by default)
- Enable from the *Relative Strength (vs Index)* input group

### 2. RS Cross Markers on the RSI line — *on by default*
The signal-you-actually-trade layer.
- **Small filled green circle** on the RSI line when RS crosses above 0 (outperformance start)
- **Small filled red circle** on the RSI line when RS crosses below 0 (underperformance start)
- Cross detection runs **independently of the RS line toggle**, so you get the signal even while the RS line itself stays hidden
- Show/hide toggle plus separate color pickers in the new *RS Cross Markers* input group

### 3. Two new alertconditions
- Relative Strength crosses above 0 (outperforming benchmark)
- Relative Strength crosses below 0 (underperforming benchmark)

## Default / styling changes

- **RSI MA:** switched from **circles** to a **thin solid line at 50% opacity** (was full-opacity dotted circles). Line style can be changed to Dashed from the Style tab.
- **Band Fill (30–80):** now **unchecked by default** — enable it from the Style tab if you want the shaded band back.
- **RS zero line:** hidden by default (was visible in the earlier RS preview).

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