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谁明白这个ADX 的公式的含义。看不懂啊。

it.uncle(路谣.电脑匪徒)

Average Directional Movement index (.ADX)

ADX = modify moving average of DX
DX = 100 x ( (+DI - -DI)/( +DI + -DI) )
+DI = +DMn / TRn , -DI = -DM / TRn
+DM = Ht - Ht-1 , -DM = Lt - Lt-1
CL = Ct - Ct-1
TR = largest of +DM,-DM ,and CL
where :
+DI = current positive directional index
-DI = current negative directional index
+DMn = current modified moving average of +DM
+DM = current positive directional movement value
Ht = current hign
Ht-1 = previous high
Lt = current low
Lt-1 = previous low
-DMn = current modified moving average of -DM
-DM = current negative directional movement value
TRn = current modified modified moving average of the true range
TR = true range
n = number of periods
DX = current DX
reference from : J.Welles Wilder

(#37122@43)
Last Updated: 2008-6-7

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谁明白这个ADX 的公式的含义。看不懂啊。 -it.uncle(路谣.电脑匪徒); 2008-6-7 {823} (#37122@43)
Average Directional Movement index (.ADX)

ADX = modify moving average of DX
DX = 100 x ( (+DI - -DI)/( +DI + -DI) )
+DI = +DMn / TRn , -DI = -DM / TRn
+DM = Ht - Ht-1 , -DM = Lt - Lt-1
CL = Ct - Ct-1
TR = largest of +DM,-DM ,and CL
where :
+DI = current positive directional index
-DI = current negative directional index
+DMn = current modified moving average of +DM
+DM = current positive directional movement value
Ht = current hign
Ht-1 = previous high
Lt = current low
Lt-1 = previous low
-DMn = current modified moving average of -DM
-DM = current negative directional movement value
TRn = current modified modified moving average of the true range
TR = true range
n = number of periods
DX = current DX
reference from : J.Welles Wilder

前辈没有给出n的关系式，俺试着猜猜： -caiyucuxiu(Fierce Angel); 2008-6-8 {383} (#37131@43)
从后往前推：

CL = current close - previous close
+DM = current high - previous high
-DM = current low - previous low
TR 取以上三值之最大。
+DMn 为+DM的修正值 - 应该与n值有关
-DMn 为-DM的修正值 - 应该与n值有关
TRn 为TR的修正值 - 应该与n值有关
从而可以算出 +DI 和 -DI，进而DX
再用n的关系式修正，得ADX

这样的理解应该是对的，请问ADX指标该怎样用呢？谢谢。

我不是什么前辈。在学习中。 -it.uncle(路谣.路漫漫其修远兮); 2008-6-8 {297} (#37134@43)
ADX是趋势的强弱指标。当一个趋势形成时(看MACD)，看这个指标的强弱决定是否RIDE上去。在趋势进展过程中，看这个指标大小判定趋势是否要结束。不同的股票，ADX的数值可能不同。默认值，ADX<20，表明趋势弱，上去风险大。当MACD出现BUY/SELLSHORT信号，如果ADX数值比较高，表明趋势风险小，持续会长。

公式里面，有N。

谁明白这个ADX 的公式的含义。看不懂啊。

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