Add warning about strategy/backtesting

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Matthias 2019-01-21 20:03:19 +01:00
parent 27b2021726
commit 7b138ef3b4

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@ -47,6 +47,12 @@ python3 ./freqtrade/main.py --strategy AwesomeStrategy
**For the following section we will use the [user_data/strategies/test_strategy.py](https://github.com/freqtrade/freqtrade/blob/develop/user_data/strategies/test_strategy.py)
file as reference.**
!!! Note: Strategies and Backtesting
To avoid problems and unexpected differences between Backtesting and dry/live modes, please be aware
that during backtesting the full time-interval is passed to the `populate_*()` methods at once.
It is therefore best to use vectorized operations (across the whole dataframe, not loops) and
avoid index referencing (`df.iloc[-1]`), but instead use `df.shift()` to get to the previous candle.
### Customize Indicators
Buy and sell strategies need indicators. You can add more indicators by extending the list contained in the method `populate_indicators()` from your strategy file.