Logarithmic regression strategy

[Alexander.Gettinger]

Strategy based on Logarithmic regression indicator (viewtopic.php?f=17&t=3716).

BUY condition: price exceeds upper line by [Distance] number of pips.
SELL condition: price exceeds bottom line by [Distance] number of pips.

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LogarithmicRegression_Strategy.lua

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For this strategy must be installed Logarithmic regression indicator (viewtopic.php?f=17&t=3716).

The Strategy was revised and updated on November 19, 2018.

[Exolon]

Backtesting this on EUR/USD, H1 caused an infinite loop (or at least hung Marketscope/FTS for about two minutes until I killed the whole thing). I'm not sure how, since there only seems to be one loop in the program, unless "enum:next()" doesn't actually advance the enumerator?

[Exolon]

Just a quick note; I was trying to debug this strategy and the size was a bit overwhelming. Every line of code we don't write is by definition correct, and makes the program easier to debug.

So the following long if/else construct in the strategy...

Code: Select all

    Price=instance.parameters.Price;
    if Price=="close" then
     LR = core.indicators:create("LOGARITHMIC_REGRESSION", Source.close, instance.parameters.Period, instance.parameters.Deviation);
    elseif Price=="open" then
     LR = core.indicators:create("LOGARITHMIC_REGRESSION", Source.open, instance.parameters.Period, instance.parameters.Deviation);
    elseif Price=="high" then
     LR = core.indicators:create("LOGARITHMIC_REGRESSION", Source.high, instance.parameters.Period, instance.parameters.Deviation);
    elseif Price=="low" then
     LR = core.indicators:create("LOGARITHMIC_REGRESSION", Source.low, instance.parameters.Period, instance.parameters.Deviation);
    elseif Price=="typical" then
     LR = core.indicators:create("LOGARITHMIC_REGRESSION", Source.typical, instance.parameters.Period, instance.parameters.Deviation);
    elseif Price=="median" then
     LR = core.indicators:create("LOGARITHMIC_REGRESSION", Source.median, instance.parameters.Period, instance.parameters.Deviation);
    else
     LR = core.indicators:create("LOGARITHMIC_REGRESSION", Source.weighted, instance.parameters.Period, instance.parameters.Deviation);
    end

...is functionally equivalent to this much shorter code:

Code: Select all

    Price = instance.parameters.Price or 'weighted'
    LR = core.indicators:create("LOGARITHMIC_REGRESSION", Source[Price], instance.parameters.Period, instance.parameters.Deviation)

[Apprentice]

Bump up.