ALMA output is vastly different from other charting software

Which version are you running? The lastest version is on Github. Pip is for major releases. 0.3.14b0

Describe the bug Current implementation of ALMA produces vastly different results than built-in alma indicator on TradingView.

To Reproduce

# 1. read price data into df
...

# 2. add alma
    df['alma'] = ta.alma(df['close'], 50)

#3. plot result
...

#4. Visually inspect the chart and compare with few other implementations of alma 
(TradingView, SierraCharts, Ninjatrader, etc)

Expected behavior I expect for plotted output of alma indicator to match alma plots of other charting software.

Screenshots

• black line is the current implementation of ALMA (50);
• red line is what I believe to be the correct ALMA (50);

Same chart on TradingView platform:

Additional context The reason why I believe other implementations to be correct is because I found the difference between current implementation and the original one provided by authors. After fixing it alma works as expected.

[twopirllc]

Hey @UncleVasya,

I have an updated alma on the development branch if you want to test it out first. It should be quicker also.

$ pip install -U git+https://github.com/twopirllc/pandas-ta.git@development

Thanks, KJ

[twopirllc]

@pssolanki111,

I’ll close it when I update the main branch as well as other Issues in the similar state.

KJ