fix(docs/strategy-advanced): add warnings
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@ -60,6 +60,12 @@ class AwesomeStrategy(IStrategy):
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return dataframe
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```
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!!! Warning
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The data is not persisted after a bot-restart (or config-reload). Also, the amount of data should be kept smallish (no DataFrames and such), otherwise the bot will start to consume a lot of memory and eventually run out of memory and crash.
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!!! Note
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If the data is pair-specific, make sure to use pair as one of the keys in the dictionary.
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See `custom_stoploss` examples below on how to access the saved dataframe columns
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## Custom stoploss
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@ -236,6 +242,11 @@ Imagine you want to use `custom_stoploss()` to use a trailing indicator like e.g
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See: "Storing custom information using DatetimeIndex from `dataframe`" example above) on how to store the indicator into `custom_info`
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!!! Warning
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only use .iat[-1] in live mode, not in backtesting/hyperopt
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otherwise you will look into the future
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see: https://www.freqtrade.io/en/latest/strategy-customization/#common-mistakes-when-developing-strategies
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``` python
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from freqtrade.persistence import Trade
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from freqtrade.state import RunMode
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@ -260,7 +271,10 @@ class AwesomeStrategy(IStrategy):
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# but we can just use the last entry from an already analyzed dataframe instead
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dataframe, last_updated = self.dp.get_analyzed_dataframe(pair=pair,
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timeframe=self.timeframe)
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# but we can just use the last entry to get the current value
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# WARNING
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# only use .iat[-1] in live mode, not in backtesting/hyperopt
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# otherwise you will look into the future
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# see: https://www.freqtrade.io/en/latest/strategy-customization/#common-mistakes-when-developing-strategies
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relative_sl = dataframe['atr'].iat[-1]
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if (relative_sl is not None):
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