Error at the end of backtesting if I use resampled data

CooleRnax

When I resample '12H' data into '1D' data I get and error in the end of backtesting.

    results = cerebro.run()
  File "C:\ProgramData\Anaconda3\lib\site-packages\backtrader\cerebro.py", line 1127, in run
    runstrat = self.runstrategies(iterstrat)
  File "C:\ProgramData\Anaconda3\lib\site-packages\backtrader\cerebro.py", line 1298, in runstrategies
    self._runnext(runstrats)
  File "C:\ProgramData\Anaconda3\lib\site-packages\backtrader\cerebro.py", line 1557, in _runnext
    dt0 = min((d for i, d in enumerate(dts)
ValueError: min() arg is an empty sequence

CooleRnax

I don't understand what is the issue here. Please help!
This is how I add data:

GRANULARITY = {
    '1Min': [bt.TimeFrame.Minutes, 1],
    '5Min': [bt.TimeFrame.Minutes, 5],
    '30Min': [bt.TimeFrame.Minutes, 30],
    '1H': [bt.TimeFrame.Minutes, 60],
    '4H': [bt.TimeFrame.Minutes, 60 * 4],
    '12H': [bt.TimeFrame.Minutes, 60 * 12],
    '1D': [bt.TimeFrame.Days, 1],
}

data = bt.feeds.PandasData(
            
            	dataname=data_raw,
            
            	openinterest=None
            
            )
            
            
            
            cerebro.adddata(data, name=symbol + "_" + freqs[0])
            
            if len(freqs) > 1:
            
            	for freq in freqs[1:]:
            
            		name = symbol + "_" + freq
            
            		timeframe, compression = GRANULARITY[freq]
            
            		cerebro.resampledata(
            
            			data,
            
            			name=name,
            
            			timeframe=timeframe,
            
            			compression=compression,
            
            		)

ab_trader

Seems you didn't set time frame and compression for baseline data. If I remember correctly bts default time frame is Daily. So you are re-sampling from days to intraday now.

CooleRnax

@ab_trader said in Error at the end of backtesting if I use resampled data:

Seems you didn't set time frame and compression for baseline data. If I remember correctly bts default time frame is Daily. So you are re-sampling from days to intraday now.

Thanks! It worked!

            timeframe, compression = GRANULARITY[freqs[0]]
            data = bt.feeds.PandasData(
                dataname=data_raw,
                openinterest=None,
                timeframe=timeframe,
                compression=compression,
            )