Indicator - RefreshRates() - CPU load

Quoting svengralla

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Hi, for a better understanding: A) 1. Whats the specific context, where RefreshRates() is most effective? 2. Outside this specific context, is RefreshRates() of any use? 3. Why or why not routinely implement RefreshRates() in all my custom indicators? B) My recent indicator puts heavy load on the CPU. Reducing the bar history (and thereby iterations in loops) helped a lot. Besides, what other tweeks might help to reduce CPU load? Have a good day, Sven

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Quoting RaptorUK

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{quote} RefreshRates() is used to update the Predefined Variables they are automatically updated with each tick. . . do you use these in your Indicator ? if not then you certainly do not need to use RefreshRates(), even if you do use them it is unlikely that you would need to use it in an Indicator, what makes you think that you do ?

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Quoting svengralla

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{quote} Recently, I studied the source code of a custom indicator and stepped on this "RefereshRates()", I never saw before. Now, I'm writing a indicator drawing indicator lines for multiple instruments. It puts quiet some load on my box and I wondered if this might be a case for RefreshRates(). //////////////////////////////////////////// Raptor, by the way, in case I have to initialize a variable with an EXPRESSION and ONLY ONCE e.g. ... double eurusd_low_yesterday = iLow("EURUSD", PERIOD_D1, 1) ... and would like to use it in the start()...

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double eurusd_low_yesterday;

int init()
{
 eurusd_low_yesterday = iLow("EURUSD", PERIOD_D1, 1);
}

Quoting svengralla

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How do I do that? Writing the code to init() and start() won't see it. Writing it to start() and it will be initialized over and over again with every tick (?).

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Quoting FerruFx

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{quote} You can put it in init() ...

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Quoting svengralla

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{quote} Yeah, that's the trick. THX.

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