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# Bill Williams. Awesome Oscillator (AC)

1586 8
Hi
Let me introduce my Bill Williams . Awesome Oscillator ( AC ) script.
This indicator plots the oscillator as a histogram where blue denotes
periods suited for buying and red . for selling. If the current value
of AO ( Awesome Oscillator ) is above previous, the period is considered
suited for buying and the period is marked blue. If the AO value is not
above previous, the period is considered suited for selling and the
indicator marks it as red.
```////////////////////////////////////////////////////////////
//  Copyright by HPotter v1.0 15/04/2014
//    This indicator plots the oscillator as a histogram where blue denotes
//    periods suited for buying and red . for selling. If the current value
//    of AO (Awesome Oscillator) is above previous, the period is considered
//    suited for buying and the period is marked blue. If the AO value is not
//    above previous, the period is considered suited for selling and the
//    indicator marks it as red.
////////////////////////////////////////////////////////////
study("Bill Williams. Awesome Oscillator (AC)")
nLengthSlow = input(34, minval=1, title="Length Slow")
nLengthFast = input(5, minval=1, title="Length Fast")

xSMA1_hl2 = sma(hl2, nLengthFast)
xSMA2_hl2 = sma(hl2, nLengthSlow)
xSMA1_SMA2 = xSMA1_hl2 - xSMA2_hl2
xSMA_hl2 = sma(xSMA1_SMA2, nLengthFast)
nRes =  xSMA1_SMA2 - xSMA_hl2
cClr = nRes > nRes[1] ? blue : red
plot(nRes, style=histogram, linewidth=1, color=cClr)
```
Can you add the word Accelerator somewhere so it will be easier to search for? Thanks for creating this. :)
Darkyalt
I do not know how make edit.
HPotter, could you please add a Signal line to this indicator. It really helps identify Top and Bottoms when slope change and signal line converge plus a bearish/bullish bias. Thanks for a very useful indicator!
coondawg71
What should to show a Signal line?
HPotter

Here is an image with a crudely hand drawn Signal Line. Signal line can be any of the common moving averages. Simple moving average will suffice, I prefer Linear Weighted Moving Average. The Signal period would be the difference between the short and long periods of AO. With the common default of AO being short 5 and long 35, difference of the two being 30, Signal period should be set to 15. Signal line assists the AO by differentiating what kind of slope change we are experiencing ...1) Top/Bottom of Major/Minor Trend 2.) Gaps = heavy price movement 3.) Divergence Thanks!
coondawg71
coondawg71

HPotter
Thanks HPotter! Traders will find this very useful!
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