blackcat1402

[blackcat] L2 Ehlers Modified Stochastic Indicator

Level: 2

Background

John F. Ehlers introuced Modified Stochastic Indicator in his "Cycle Analytics for Traders" chapter 7 on 2013.


Function

Conventional indicators are not immune to the effects of spectral dilation. For example, a Stochastic indicator remains near its upper bound when the market is in an uptrend even though a relatively short lookback period is used. This, of course, is due to the presence of the larger and longer cyclic components in the data. In a broad sense, the classic Stochastic indicator acts as a one-pole filter because there is just a single difference term in the numerator of its calculation. This calculation is the same as the standard, except Dr . Ehlers use a SuperSmoother for the smoothing instead of moving averages. The bottom subgraph shows an identical calculation except that the Stochastic calculations are preceded by the roofing filter that constrains the cyclic components to fall within the range from 10-bar to 48-bar periods. Clearly, the Stochastic indicator has been dramatically altered by the insertion of the roofing filter.
Dr . Ehlers leaves it to the reader to explore how standard indicators can be improved simply by inserting the roofing filter before the indicator computations are begun.

Key Signal

MyStochastic --> Modified Stochastic Indicator fast line
Trigger --> Modified Stochastic Indicator slow line

Pros and Cons

100% John F. Ehlers definition translation of original work, even variable names are the same. This help readers who would like to use pine to read his book. If you had read his works, then you will be quite familiar with my code style.

Remarks

The 44th script for Blackcat1402 John F. Ehlers Week publication.

Readme

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.

The scripts posted are categorized into 5 levels according to my efforts or manhours put into these works.

Level 1 : interesting script snippets or distinctive improvement from classic indicators or strategy. Level 1 scripts can usually appear in more complex indicators as a function module or element.

Level 2 : composite indicator/strategy. By selecting or combining several independent or dependent functions or sub indicators in proper way, the composite script exhibits a resonance phenomenon which can filter out noise or fake trading signal to enhance trading confidence level.

Level 3 : comprehensive indicator/strategy. They are simple trading systems based on my strategies. They are commonly containing several or all of entry signal, close signal, stop loss, take profit, re-entry, risk management, and position sizing techniques. Even some interesting fundamental and mass psychological aspects are incorporated.

Level 4 : script snippets or functions that do not disclose source code. Interesting element that can reveal market laws and work as raw material for indicators and strategies. If you find Level 1~2 scripts are helpful, Level 4 is a private version that took me far more efforts to develop.

Level 5 : indicator/strategy that do not disclose source code. private version of Level 3 script with my accumulated script processing skills or a large number of custom functions. I had a private function library built in past two years. Level 5 scripts use many of them to achieve private trading strategy.
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