title: Adding signals on the candle chart
body: <p>I would like to plot signals on my chart is there is a way to do it on candle stick?
  I did the following and got stuck :(</p>
  <pre><code>!pip install yfinance
  !pip install mplfinance
  import yfinance as yf
  import mplfinance as mpf
  import numpy as np 
  import pandas as pd 
  
  df=yf.download('BTC-USD',start='2008-01-04',end='2021-06-3',interval='1d')
  
  buy=np.where((df['Close'] &gt; df['Open']) &amp; (df['Close'].shift(1) &lt; df['Open'].shift(1),1,0)
  
  fig = plt.figure(figsize = (20,10))
  mpf.plot(df,figsize=(20,12),type ='candle',volume=True);
  
  # any idea how to add the signal?
  </code></pre>