This indicator calculates 3 Smoothed moving average for default values of 13, 8 and 5 days, with displacement 8, 5 and 3 days. The most popular method of interpreting a moving average is to compare the relationship between a moving average of the security's price with the security's price itself (or between several moving averages).
Apparently they've added SMMA as an indicator. To test this, I compared a 13-period non-shifted SMMA (native indicator) to the shifted SMMA (your code here). They were very different. Perhaps it's possible to use the native SMMA method?
HPotter
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In the script I used formula from link what you send me in the other thread and code it. But I no not sure that is real formula. In the TV, how I know, don`t exists a builtin function of SMMA, but I can wrong.
moveon
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Click on the arrow icon right to the TradingView menu "indicators". There you will find the "Bill William's 3 Lines" indicator.
moveon
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To me your code and TV code looks to show identical signals:
the_batman
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Yeah, because the original is wrong. For the reason's stated in the original comment. (ie it uses SIMPLE moving average instead of SMOOTHED).
the_batman
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I think you're right. The formula I sent is wrong. (Sorry).
Here's the code (ie formula) from the SMMA indicator:
src = close
len = input(7, minval=1, title="Length")
smma = na(smma[1]) ? sma(src, len) : (smma[1] * (len - 1) + src) / len
Apparently they've added SMMA as an indicator. To test this, I compared a 13-period non-shifted SMMA (native indicator) to the shifted SMMA (your code here). They were very different. Perhaps it's possible to use the native SMMA method?