The Wealth Lab

The Moving Average Convergence Divergence (MACD) indicator is one of the most widely studied momentum oscillators in technical analysis, built entirely on the mathematical relationship between two exponential moving averages and their difference. This article dissects the MACD formula from first principles, explains every component with verified Pine Script v6 code, and demonstrates how to implement a fully functional MACD system without relying on the black-box ta.macd() built-in — so you understand exactly what is happening at every bar. 1. The Mathematics Behind MACD MACD is defined by three computed series, each derived from price: $$\text{MACD Line} = \text{EMA}_{\text{fast}}(\text{close}) - \text{EMA}_{\text{slow}}(\text{close})$$ $$\text{Signal Line} = \text{EMA}_{\text{signal}}(\text{MACD Line})$$ $$\text{Histogram} = \text{MACD Line} - \text{Signal Line}$$ The standard parameterization uses a 12-period fast EMA , a 26-perio...

The plot() function is the most fundamental visualization tool in Pine Script v6, enabling developers to render numeric series data directly onto a TradingView chart as lines, histograms, circles, and more. Understanding its styling parameters — including color , linewidth , and style — is essential for building readable, professional-grade indicators. This article provides a rigorous, fact-checked walkthrough of the plot() function based strictly on the official Pine Script v6 Reference Manual. 1. What Does plot() Do? The plot() function renders a series of numeric values as a visual element on the chart pane. It returns a plot object, which can later be used with the fill() function to shade areas between two plots. Every call to plot() creates one persistent visual layer on the chart. Reference: https://www.tradingview.com/pine-script-reference/v6/#fun_plot 2. Core Parameters (Individually Verified) Rather than re...