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Non-linear methods are widely used to handle financial time series. In particular, there are quite a few indicators in the MetaTrader trading platform that use non-linear approaches. All of them are actively used in trading.
Non-linear indicators may be needed when certain characteristics of a signal are more important than general information. In addition, non-linear indicators can cope with situations, in which linear indicators are powerless.
Let's take the indicator template from this article and convert it into the logarithmic version.

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