[blackcat] L3 Ehlers Corona Charts Swing Position

Level: 3


John F. Ehlers introuced Corona Charts Swing Position Indicator in Nov, 2008.


John Ehlers's corona indicators, "Corona Charts," provide a "multidimensional" view of market activity. In the article "Corona Charts" in Nov, 2008, John Ehlers further developed his earlier work on market cycles. A new kind of indicator was presented that uses a glow-like effect to present another dimension of data. Implementation of corona charts in pine v4 helps detect dominant cycles in data. It provides a corona chart for swing positions indicator.

Dr . Ehlers claims that a corona is displayed when the market is in a trend and there is little cyclic component. The swing position indicator shows the phasing of the data within the dominant cycle. A value of -5 means the cycle is at its valley. A value of +5 means the cycle is at its peak. In a pure cycle the Swing Position will trace out the shape of a sine wave . However, I normalized it to overlay it together with Corona Chart heat maps .

Key Signal

DomCycle--> Ehlers Dominant Cycle
Plot2~Plot50--> Ehlers Corona Charts Swing Position Heat Map

Pros and Cons

100% John F. Ehlers definition translation, even variable names are the same. This help readers who would like to use pine to read his book.


The 74th script for Blackcat1402 John F. Ehlers Week publication.


In real life, I am a prolific inventor. I have successfully applied for more than 60 international and regional patents in the past 12 years. But in the past two years or so, I have tried to transfer my creativity to the development of trading strategies. Tradingview is the ideal platform for me. I am selecting and contributing some of the hundreds of scripts to publish in Tradingview community. Welcome everyone to interact with me to discuss these interesting pine scripts.

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Open-source script

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