Array out of index after resampling data

Kestutis Tamosiunas

Hi,
I was happy out testing my basic strategies until I introduced data resampling.I used to check the price of a next bar ahead and it worked fine but now I get:
return self.array[self.idx + ago]
IndexError: array index out of range
when executing this line of code, as long as I use positive number, I get the error:

first_bottom = [(self.datalow[i]) for i in range(-8, 5)]

Now i can't get to see price ahead anywhere in the code, I tried lines attribute, but no luck either.Spend the whole day fiddling with the code, but as for being not a programmer, I cant figure out for myself.
If anyone could point me out to the right direction, I 'd very appreciate.

Here is more snippets of my code that could clarify the reason of the problem:

def __init__(self):
self.datalow = self.datas[0].low
.......................................................

data = bt.feeds.GenericCSVData(
        dataname=datapath,
        # Do not pass values before this date
        fromdate=datetime.datetime(2018, 9, 9),
        todate = datetime.datetime(2020, 2, 2),
        timeframe = bt.TimeFrame.Minutes,
        compression = 60,
        .................
        openinterest = -1)
.......................................................................
cerebro.adddata(data)
cerebro.resampledata(data,timeframe=bt.TimeFrame.Days,compression=1)

run-out

Backtrader is specifically designed not to allow looking ahead of the current bar. The mostly eliminates look ahead bias in the backtest. Have a look over here for more info.

ab_trader

I would re-write the code to use only available data.

Kestutis Tamosiunas

@run-out well it was working fine with single data.I guess I need to find a way to cheat a system . For a noob it will be a big challenge :) . Thanks for your replays guys.
And by the way run-out, good look with the backtrader2.