Display multiple lines in indicator plot

[botradingblog1]

Hi guys,

I was wondering if there's a way to plot multiple lines in the indicator graphs, e.g. MACD and MADC signal line?

Currently, I implement the MACD and MADC signal as two separate indicators.

Any guidance greatly appreciated.

def MACD(df_in, fast, slow, signal):
    df = df_in.copy()

    df.ta.macd(close='Close', fast=fast, slow=slow, signal=signal, append=True)
    macd_series = df[f'MACD_{fast}_{slow}_{signal}']
    return macd_series

def MACD_SIGNAL(df_in, fast, slow, signal):
    df = df_in.copy()

    df.ta.macd(close='Close', fast=fast, slow=slow, signal=signal, append=True)
    macd_signal_series = df[f'MACDs_{fast}_{slow}_{signal}']
    return macd_signal_series

Strategy():
    def init(self):
        # Compute indicators
        self.macd1 = self.I(MACD, self.data.df, self.macd_1_fast, self.macd_1_slow, self.macd_1_signal)
        self.macd1_signal = self.I(MACD_SIGNAL, self.data.df, self.macd_1_fast, self.macd_1_slow, self.macd_1_signal)

[kernc]

Quoting the API reference for Strategy.I:

func is a function that returns the indicator array(s) of same length as Strategy.data.

You can simply return a sequence of arrays to have them contained in the same indicator plot:

self.macd = self.I(lambda *args: (MACD(*args), MACD_SIGNAL(*args)),
                   self.data.df, self.macd_1_fast, self.macd_1_slow, self.macd_1_signal)

[botradingblog1]

Great, thanks very much!