Assist to draw Simple Moving Average.

[SergejsBure]

I am a newbie in mplfinance. When I use make_addplot for adding Simple Moving Average (SMA) period 12 something strange is hapening. There is two y-axis on the chart with different numbers. I plan to add additional indicators, so I have started with SMA. There is a MA 200 on the chart, which shows normally.

Chart:

Code:

from datetime import datetime
import mplfinance as mpf
import yfinance as yf
from finta import TA

yticker = yf.Ticker("BTC-USD")
title = yticker.info["longName"] + ", " + str(round(yticker.fast_info["lastPrice"], 4)) + " " + yticker.fast_info["currency"]
ylabel = "Price, " + yticker.fast_info["currency"]
ydata = yticker.history(start='2016-01-01', end=datetime.now().strftime('%Y-%m-%d'))

ydata["SMA"] = TA.SMA(ydata, 12)
ydata.fillna(0, inplace=True)

plots = [
         mpf.make_addplot(ydata["SMA"], width=0.5, panel=0)
         ]

mpf.plot(ydata.iloc[:, :7],
         type="candle",
         title=title,
         volume=True,
         ylabel=ylabel,
         mav=200,
         addplot=plots,
         warn_too_much_data=10000,
         panel_ratios=(5, 1),
         ylim=(ydata['Close'].min() * .8, ydata['Close'].max() * 1.05),
         tight_layout=False
         )

Please, help to solve.

[DanielGoldfarb]

@SergejsBure Sergey, Thank you for your interest in using mplfinance.

To answer your questions: First, regarding moving averages, I recommend that you not calculate them yourself, but rather use mpf.plot() kwargs mav= and ema= for simple and exponential moving averages respectively.

Each of these can be set to either a single number, or a tuple or list.

For example mav=50 for a single 50 period moving average, or mav=(30,60,90) for three simple moving averages of 30, 60 and 90 periods respectively.

Secondly, since you are planning to use make_addplot() for additional indicators, the I strongly recommend that you carefully read the addplot tutorial and pay particular attention to the section titled "Plotting additional data with a secondary y-axis" which is about half way down the page.

Let me know if these suggestions help.

[SergejsBure]

Thank you, @DanielGoldfarb !

The problem was solved, by adding secondary_y. mpf.make_addplot(ydata["SMA"], width=0.5, panel=0, secondary_y=False)

I will use indicators, calculated by my own, whats why kwargs mav= and ema= don't suit me.

Sincerely yours, Sergey