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Trying to use a 20 period ATR on 15m tradebars, keep getting the error:
Runtime Error: This is a forward only indicator: ATR20(BTCUSD_min) Input: 2018-05-30 18:30:00Z Previous: 2018-05-30 18:43:00Z
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Jing Wu
Hi Lukel, you should use the indicator constructor "self._atr= AverageTrueRange("BTCUSD",self.period)". "self.ATR(BTCUSD",self.period,resolution = Resolution.Minute) will update the indicator with minute resolution automatically. "self.RegisterIndicator("BTCUSD", self._atr, consolidator)" will update the indicator with the consolidated bar data. The indicator will be updated twice with the bar data of different resolutions. That's why you get the error message.
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