Drawing a Quadratic Arc Channel from Three Chart Points

Summary

This document explains a charting tool for drawing an arc-shaped channel in MetaTrader. The curve is modeled as a second-degree polynomial over bar number, with three selected points sufficient to determine its three coefficients. The interaction is designed around four clicks, and an existing line can be selected and repositioned after it becomes dotted. The description focuses on how the drawing works rather than on a trading signal or strategy.

The implementation is presented as training material and as an example of functionality that could be added to standard chart objects. The author notes that it lacks parameter preservation across timeframe changes, support for multiple channels, smoothing, and extension beyond the final bar. It is described as cross-platform and usable in MetaTrader 4 as well as MetaTrader 5. The document gives no evidence that arc channels improve analysis or trading performance, and it does not explain how to interpret or trade from the plotted curve.

Key ideas

• The channel curve is a quadratic polynomial indexed by bar number.
• Three selected points determine the polynomial's coefficients.
• The tool allows an existing arc line to be selected and repositioned.
• The implementation omits timeframe parameter persistence, multiple channels, smoothing, and rightward extension.
• No trading rules or evidence of performance are provided.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.