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Why not do what the experts do and code the indicators in the EA maybe even DLLs instead of mq4 although doing it in mq4 has always been sufficient for my purposes.
i cant imagine that there is any difference between an attached indicator and icustom, neither in results of the calculation or speed.
that would make no sense.
an indicator attached to a chart does the same calculations as if it is called from an ea via icustom.
only if you attach the indicators to the chart AND the ea, the calculations are made 2 times, thats all
My knowledge of what exactly happens with iCustom is called is limited - but as far as I know calling using iCustom the indicator is loaded and unloaded each time is it not? I use five or so values from each indicator on three timeframes. So for each of these values the indicator must be loaded, all the values calculated, and then just that one returned. Whereas if the indicator is placed on the chart it remains running and the buffer values remain in memory somewhere, so on the appearance of a new bar only one new value need be calculated. Please correct me if I am wrong here.
Ruptor - I would/will perhaps eventually do that, but it is a very large undertaking so I would like to just get a working 'basic' version that I can use to gauge whether my system would be worthwhile automating.
The indicator isn't unloaded each time, it is loaded once but not displayed. If you change the parameters (other than shift) then another copy is loaded.
If you use the tester in visual mode and then stop it, all the hidden indicators are shown.
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