once is to initialise the variable once on the first reading of algo
I get a slight variation in my results if I use ONCE crossflag=0 at the top versus if I use crossflag=0 on its own. But why should there be a difference? If crossflag=0 at the top of the code, shouldn’t be enough to reset it every time the code runs?
Mike, the code will be executed from top at each close of a bar. For example, if you receive new bars each one minute (this depends on your Chart setting of the instrument), then each one minute the code executes.
In the example below, this is each 5 minutes.
Okay, thanks. I think I understand it better now. I can see the benefit of ONCE if I need the instruction to stay static for a number of bars while other variables calculate.
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