# Variable Moving Average [LazyBear]

26209 vizualizações
Variable Moving Average, often abbreviated as VMA, is an Exponential Moving Average developed by Tushar S. Chande. VMA automatically adjusts its smoothing constant on the basis of Market Volatility .

Use this like other Moving Averages. I have added the following options that can be enabled via options page:
- Trend Direction Indication: Green = Up trend, Blue = Potential congestion, Red = down trend.
- Color bars based on Trend

List of my other indicators:
- Chart:
//
// @author LazyBear
// List of all my indicators:
//
study(title="Variable Moving Average [LazyBear]", shorttitle="VMA_LB", overlay=true)
src=close
l =input(6, title="VMA Length")
std=input(false, title="Show Trend Direction")
bc=input(false, title="Color bars based on Trend")
k = 1.0/l
pdm = max((src - src[1]), 0)
mdm = max((src[1] - src), 0)
pdmS = ((1 - k)*nz(pdmS[1]) + k*pdm)
mdmS = ((1 - k)*nz(mdmS[1]) + k*mdm)
s = pdmS + mdmS
pdi = pdmS/s
mdi = mdmS/s
pdiS = ((1 - k)*nz(pdiS[1]) + k*pdi)
mdiS = ((1 - k)*nz(mdiS[1]) + k*mdi)
d = abs(pdiS - mdiS)
s1 = pdiS + mdiS
iS = ((1 - k)*nz(iS[1]) + k*d/s1)
hhv = highest(iS, l)
llv = lowest(iS, l)
d1 = hhv - llv
vI = (iS - llv)/d1
vma = (1 - k*vI)*nz(vma[1]) + k*vI*src
vmaC=(vma > vma[1]) ? green : (vma<vma[1]) ? red : (vma==vma[1]) ? blue : black
plot(vma, color=std?vmaC:black, linewidth=3, title="VMA")
barcolor(bc?vmaC:na)
List of my free indicators: http://bit.ly/1LQaPK8
List of my indicators at Appstore: http://blog.tradingview.com/?p=970

## Comentários

candle close above/below? or on a color change?
thanks.
Resposta
Hi, why does the line just show as black for me?
Resposta
@BradleyJo, Check "Show Trend Direction" and it should color
Resposta
Could you please tell, what did you use as a measure of volatility (vI)??
Resposta
how to use this indicator in amibroker, i am getting error
Resposta
harish.khimavat
I am new to amibroker and afl, kindly let me know how to use the above afl
Resposta
harish.khimavat
I am getting error 30, syntax error
Resposta
Is there any possibility to set alert system on color changes? Thanks in advance !
Resposta