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Feature Request: Point and Figure (PnF) Traditional Box Scaling

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评估

难度
5/5
预计耗时
一周以上
新手友好度
30/100
Issue 类型
功能
描述清晰度
需要澄清
活跃度
停滞
技术栈
matplotlib, python
领域
data-visualization

调研方向

首先定位 mplfinance 的 Point and Figure 图表实现，以及现有的固定箱体缩放和动态 ATR 缩放路径。阅读链接的 StockCharts 参考资料，以定义传统缩放规则，然后确定使用新缩放模式的图表所需的预期行为和验证。

由索引模型根据 Issue 内容生成。

描述

enhancement

First, thank you for the great work on mplfinance!

I would like to request the addition of Traditional Box Scaling for Point and Figure (P&F) charts.

Currently, mplfinance supports fixed box scaling and dynamic ATR scaling. While these approaches are helpful, they both have important limitations in practice:

  • Fixed box scaling fails to stay consistent across price levels. For example, a $1 move represents a 10% change when a stock is priced at $10, but only a 1% change when the same stock is priced at $100.
  • Dynamic ATR or percent scaling solves this inconsistency but often produces non-round box values, which can be visually and psychologically unintuitive for market participants.
Image

Source: StockCharts.com

The Traditional Box Scaling, originally established by ChartCraft in the 1930s, resolves both these issues. It has long been the standard reference for Point and Figure charting and preserves both visual clarity and percentage consistency across price ranges.

This way, Point and Figure charts are actually very very helpful.

Sources: https://chartschool.stockcharts.com/table-of-contents/chart-analysis/point-and-figure-charts/point-and-figure-basics/point-and-figure-scaling-and-timeframes

Thank you for your time and for considering this enhancement.

Image

主要语言
Python
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