Standard Deviation Indicator / Indie

Here is a compact but comprehensive write-up for the Standard Deviation Indicator suitable for educational publishing on platforms like GitHub, TradingView, or forums:

Overview

The Standard Deviation (StdDev) indicator measures market volatility by quantifying how much price deviates from its moving average. It helps traders identify periods of high or low volatility, making it valuable for breakout strategies and risk management.

Usage & Strategy

When to Use: During volatility assessments, trend strength evaluation, or when used with Bollinger Bands.
Trading Context: High StdDev can indicate breakout potential; low StdDev suggests consolidation.

Formula

StdDev = √(Σ(price - avg(price))² / n)

Indie and Pine use built-in functions to encapsulate this computation.

How to Interpret Values

Rising StdDev: Increasing volatility, often during trend acceleration.
Falling StdDev: Consolidation, low trading activity.
Sudden Spikes: May signal incoming price swings or news-driven events.

Code Comparison

Feature	Indie v5	Pine v5
Volatility Calculation	`StdDev.new(self.close, 20)`	`ta.stdev(close, 20)`
Plot Integration	`@plot.line('stddev', color=color.YELLOW)`	`plot(stddev, color=color.yellow, title="StdDev")`
Context Model	`Main(self): return plot.Line(...)`	Flat global code
Decorators	`@indicator`, `@plot.line`	`indicator()`, `plot()`

Indie v5 Code

#education purpose
# indie:lang_version = 5
from indie import indicator, plot, color
from indie.algorithms import StdDev

@indicator('Standard Deviation', overlay_main_pane=True)
@plot.line('stddev', color=color.YELLOW)
def Main(self):
    stddev = StdDev.new(self.close, 20)
    return plot.Line(stddev[0])

Pine Script Code

//education purpose
//@version=5
indicator("Standard Deviation", overlay=true)

// Define length
length = 20

// Calculate Standard Deviation
stddev = ta.stdev(close, length)

// Plot Standard Deviation
plot(stddev, color=color.yellow, title="StdDev")

Key Takeaways

Strengths: Simple, fast, and compatible with other indicators like Bollinger Bands.
Limitations: Purely statistical—it doesn’t indicate trend direction.
Ideal For: Measuring market “calm” vs. “explosive” periods.

📜 License

MIT License — Free to use, modify, redistribute, and integrate. Attribution appreciated. Author: TakeProfit Purpose: Educational / open-source community development