What’s the differene between running a backtest and an indicator, i.e. should the ohlc be the same?
I get different values between them on a tick chart. The indicator agrees with the chart but the graph function in the backtest has a different value, for ohlc. Can you explain why?
Welcome to the forums. Please use the ‘Insert PRT Code’ button when putting code in your posts to make it more readable. I have tidied up your post for you on this occasion. 🙂
Your image is confusing the question as it appears to show identical values! The answer to your question might be because an indicator is showing the values of a still forming bar or candle and the GRAPH function in a strategy will be the values of the last closed bar or candle.
Are you sure? Because I can replicate the same as you for the tick by tick chart but not in the 1 second chart where OHLC is the same. Please note that there are a lot of candlesticks that don’t exist on a 1 second timeframe if no ticks are received from the market.
For the tick by tick chart, I think the differences come from when the system is evaluated or not (code read and executed) .. but I can’t be sure, I’ll try to get a definitive answer for this. Bear in mind, that there are no OHLC values with a 1 tick chart, but only one price.
When you say last three you really mean last one. There were no trades for 14:42:51 and 14:42:52 but trades for 14:42:53. The backtest will not show this until that candle is closed and a new one opened. The indicator will show ‘on the fly’ so has a result to show you.
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