RSI vs RSIClassic what diffences?

Questions about MultiCharts and user contributed studies.
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Xurma
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RSI vs RSIClassic what diffences?

Postby Xurma » 05 Aug 2021

This two functions show different RSI curves. I programmed by my self original Welles Wilder RSI and it is the same as RSIclassic. What is RSI function, who is the author of this RSI interpretation?

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Tammy MultiCharts
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Re: RSI vs RSIClassic what diffences?

Postby Tammy MultiCharts » 11 Aug 2021

Hello Xurma,

RSI function was implemented for full compatibility with EasyLanguage studies. It contains a simplified mathematical equivalent of the original Wilder algorithm.

If you need the classic Welles Wilder formula, please use RSIClassic function.

Ryanr317
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Re: RSI vs RSIClassic what diffences?

Postby Ryanr317 » 18 Jan 2022

I get different RSI values using the same periodicity when using the RSI function vs. RSIClassic. If the calculation is mathematically equivalent, why wouldn't the resulting values be the same?

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Tammy MultiCharts
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Re: RSI vs RSIClassic what diffences?

Postby Tammy MultiCharts » 04 Feb 2022

Hello Ryanr317,

RSI and RSI Classic functions are implemented differently and different calculation results may be expected.
You can learn more by checking the code of both of them in PowerLanguage Editor.

Pre-built studies in MultiCharts are mostly provided as a reference. You can modify the functions so that they satisfy your needs.


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