I've read the docs, which suggest just passing in csv=True to the indicator will output the indicator values, but that results in an error: TypeError: init() got an unexpected keyword argument 'csv'. Indicator is working, and csv writing is working (w/o indicator values).

thank you! i modified strategy.py with that change and it works now. your support is amazing.

I have a 15m bar feed, which I am resampling to 1hr and 2hr bars - works fine. But when I change the 2hr bar to resample to daily I get this error:

File "/home/chris/anaconda3/lib/python3.6/site-packages/backtrader/strategy.py", line 424, in getwritervalues
values.extend([''] * iocsv.lines.isize())
AttributeError: 'Lines_LineSeries_LineIterator_DataAccessor_Indicat' object has no attribute 'isize'

I am writing to csv, but it doesn't seem to be related because the error continues even if i disable csv output for that datafeed. Not really sure where to start with this one?

        data = btfeeds.GenericCSVData(
            dataname=datafilepath,

            fromdate=datetime.datetime(2016, 1, 1),
            todate=datetime.datetime.now(),
            timeframe=bt.TimeFrame.Seconds,
            compression=candlestick_period,

            nullvalue=0.0,

            dtformat=('%Y-%m-%d %H:%M:%S'),

            datetime=2,
            high=3,
            low=4,
            open=5,
            close=1,
            volume=6,
            openinterest=-1
        )
        cerebro.adddata(data, name=x)
        cerebro.resampledata(data, name=x + "_hour", timeframe=bt.TimeFrame.Minutes, compression=60)
        cerebro.resampledata(data, name=x + "_daily", timeframe=bt.TimeFrame.Minutes, compression=60*24)

Note, TimeFrame.Daily, compression=1 does the same thing. Just tried this to see. Everything up to 8hours works fine. After 8, I get this error.

Ah, okay, that does work, thanks. Still getting to grips with the architecture.

sorry, that doesn't help, unless i'm reading the docs wrong. i can show/hide lines on indicators - but i don't know how to not plot the price chart itself for resampled data. in the docs it says plotscheme is system-wide - i want to control this on a dataset level.

although - in a perfect world i would still like to plot a couple of the indicators on resampled data, just not the price chart itself. or, if there is a way to shrink the height of the price chart to close to zero (selectively per dataset) that would work too.

I'm running tests that work on multiple timeframes, but really don't need to see multiple charts when plotting, just makes the chart i am interested in too small. read the docs - can't see how to turn off plotting for resampledata ?

devil's in the details i suppose. thanks for that, that works.

I've read the docs, which suggest just passing in csv=True to the indicator will output the indicator values, but that results in an error: TypeError: init() got an unexpected keyword argument 'csv'. Indicator is working, and csv writing is working (w/o indicator values).

yes, all working. what i wanted was just to add 2 symbols and have the strategy execute against both of them (independently) - but I see how it's more flexible and powerful this way.

okay, i see they get added as new data feeds, which makes sense. not what i wanted, but i'll just execute twice, no problem.