Plot 2 stock prices in same axis in cerebro.plot() ???

[boshng95]

Hi guys, it is possible to put 2 stock prices together in same axis using cerebro.plot() ?
I want to use it to do some correlation analysis between stocks indexes & single stock.

[run-out]

If your first datas is data0, then when building your second and other datas you need to insert:

data1.plotinfo.plotmaster = data0

So for example, if loading three datas from a dataframe, it would look like this:

# Add Nasdaq qqq data line.
    data0 = bt.feeds.PandasData(
        dataname=pd.read_hdf("store.h5", "qqq").loc[date_start:date_end, :],
        name="qqq",
        plot=True,
    )
    cerebro.adddata(data0)

    # Add S&P500 spy data line.
    data1 = bt.feeds.PandasData(
        dataname=pd.read_hdf("store.h5", "spy").loc[date_start:date_end, :],
        name="spy",
        plot=True,
    )
    data1.plotinfo.plotmaster = data0
    cerebro.adddata(data1)

    # Add S&P short SH data line.
    data2 = bt.feeds.PandasData(
        dataname=(pd.read_hdf("store.h5", "sh").loc[date_start:date_end, :]),
        name="sh",
        plot=True,
    )
    data2.plotinfo.plotmaster = data0
    cerebro.adddata(data2)