- 金币:
-
- 奖励:
-
- 热心:
-
- 注册时间:
- 2006-7-3
|
|

楼主 |
发表于 2008-3-10 18:18
|
显示全部楼层
Finding The Trend With Aroon
Finding The Trend With Aroon
In 1995 Tushar Chande, a principal of Tuscarora Capital Management and author of "The New Technical Trader" (1994) and "Beyond Technical Analysis" (2001), developed the Aroon indicator to determine trend direction and strength. The indicator's greatest value is in helping traders and investors to distinguish whether a long-term trend is ending or simply stalling before another move. This article will show you how to calculate and apply the Aroon indicator to your own trading.
Calculating Aroon
The Aroon indicator can be calculated using the following formula:
Bullish - [(# of periods) - (# of periods since highest high)] / (# of periods)] x 100
Bearish - [(# of periods) - (# of periods since lowest low)] / (# of periods)] x 100
If we take a look at these formulas, it is apparent that they are both looking at how recent the latest highs and lows were. Higher Aroon values indicate more recent highs and lows, while lower values indicate less recent highs and lows. Moreover, the Aroon values oscillate between 100 and 0 - a higher number indicates a stronger trend and vice versa.
The two Aroon indicators (bullish and bearish) can also be made into a single oscillator by making the bullish indicator 100 to 0 and the bearish indicator 0 to -100 and finding the difference between the two values. This oscillator then varies between 100 and -100, with 0 indicating no trend.
Using the Aroon Indicator
The Aroon indicator is used by plotting the bullish and bearish versions on the same sub-chart, or by plotting the oscillator on a single sub-chart.
The key to successfully using the Aroon indicators lies in watching two things:
Indicator Movements Around the Key Levels, 30 and 70 - Movements above 70 indicate a strong trend, while movements below 30 indicate low trend strength. Movements between 30 and 70 indicate indecision. For example, if the bullish indicator remains above 70 while the bearish indicator remains below 30, the trend is definitively bullish.
Crossovers Between the Bullish and Bearish Indicators - Crossovers indicate confirmations if they occur between 30 and 70. For example, if the bullish indicator crosses above the bearish indicator, it confirms a bullish trend.
Let's take a look at an example:

Figure 1
Here we have an example of Titanium Metals (TIE), a stock that recently trended strongly on increased demand for titanium. Notice that when the Aroon indicators were on opposite ends of the 30-70 barriers, the price was in a strong trend. Also note that when crossovers occurred within the 30-70 barriers, it often signaled a confirmation of the new trend.
The Aroon oscillator is a bit simpler, but provides less information. The key levels to watch are 50, 0 and -50. When the oscillator moves above 50, it indicates a strong bullish trend. When it hovers around 0, it indicates the lack of a definitive trend. And finally, when it breaks below -50, it indicates a strong bearish trend.
Let's take a look at the same chart using the oscillator:
Figure 2

Here we can see very similar information but with a lack of confirmations because there is no crossover possible with an oscillator.
It is important to realize when looking at these charts that the Aroon indicator is lagging and, therefore, is susceptible to sharp price drops or increases. Therefore, it is very important to use other methodologies in order to exit prudently. For example, watching for high volume reversal candles is a good way to get out at the right point in the event of a sharp price reversal. Stop-loss points set at key support levels are another good way to control risk.
Investors may prefer the oscillator because it is easier to read and tends to have less contradictory signals. Meanwhile, active traders may appreciate the additional information given by the two indicators. It is up to you to determine which methodology works best for your needs and apply it to your own trading. They both offer an excellent way to determine whether a trend exists, and how strong that trend is.
Conclusion
The Aroon indicator is used best by traders and investors interested in whether or not a trend is still intact. It can help traders avoid inefficient use of capital by allowing them to seek other opportunities during sideways markets and only hold positions during strong trends. However, it is important to watch carefully and analyze stocks using other studies in conjunction with Aroon to avoid the primary weakness in this system - sharp price movements.
补充资料:
1.安龍指標(Aroon Indicator)﹕
安龍指標是在1995年由Tushar Chande所發表!安龍指標系統使用上的目的是為了確認市場走勢是否為一有方向的趨勢?以及試圖評估趨勢強弱!TusharChande之所以使用「Aroon」為此指標命名的原因是→「Aroon」一字在梵文中的意義是「晨晰之光」,藉此希望設計出及早發現新趨勢形成的指標!
安龍指標主要是由兩條線所組成,安龍上升線及安龍下降線,主要挑選了一個單一的參數也就是使用時間單位的數字應用作為運算基礎!安龍上升線是由時間單位起始至最高點產生,所算出的過去總上升百分比值。假設在我們給予的時間單位上設定了一個新低為安龍上升線的起始為零,接下來在設定的時間單價位收盤價比盤中更高,安龍上升線將是+100,而隨後的時間單位未創新高則安龍上升線將等於 (1 / 時間單位) x 100
使用指南﹕
1 安龍上升線與安龍下降線同時下降走低並彼此接近則表示走勢在高檔陷入盤整,一個強烈的下跌趨勢可能即將產生!
2. 安龍上升線若下降至50之下這代表了當前的趨勢失去了上升的動能,同樣地當安龍下降線下降至50之下,則下降趨勢失去了下跌動能!
3. 而當時的值若高於70不論是安龍上升線或是安龍下降線,則代表了一個強力的單邊走勢正在運行中!
4.而當時的值若低於30不論是安龍上升線或是安龍下降線,則代表了走勢即將反轉!<
運算公式﹕
Aroon(up) = ((total_num_of_periods - num_of_periods_since_highest_close) / total_num_of_periods)) x 100
Aroon(down) = ((total_num_of_periods - num_of_periods_since_lowest_close) / total_num_of_periods)) x 100
使用訣竅:
找出各貨幣各時間單位的最適當內定值,以求取最優化的使用!
来源于外汇论坛虞茂平所写。
2.
Aroon
Aroon是一个Tushar Chande创作的技术指标。“Aroon”出自梵语,意思是早上的第一束光明,表示从黑夜到白昼的转化。Aroon指标并不特别,在FXJ及FT类软件中有PSY、VHF等同类指标,但是数据细节的处理技巧及应用建议MetaStock处理得相当完美。
以下是原文:
Description
The Aroon indicator was developed by Tushar Chande. Aroon is a Sanskrit word meaning “dawn’s early light” or the change from night to day. The Aroon indicator allows you to anticipate changes in security prices from trending to trading range. For more information on the Aroon indicator see the article written by Tushar Chande in the September 1995 issue of Technical Analysis of Stocks & Commodities magazine.
These changes are anticipated by measuring the number of periods that have passed since the most recent x-period high and x-period low. Therefore, the Aroon indicator consists of two plots; one measuring the number of periods since the most recent x-period high (Aroon Up) and the other measuring the number of periods since the most recent x-period low (Aroon Down).
The actual plotted value is a “stochastic” like scale ranging from 0 to 100. Assuming a default time-period of 14 days, if a security makes a new 14-day high, the Aroon Up = 100; when the security makes a new 14-day low, the Aroon Down = 100. When the security has not made a new high for 14 days, the Aroon Up = 0; when the security has not made a new low for 14 days, the Aroon Down = 0.
As explained in the interpretation section for the VHF indicator the age-old problem for many trading systems is their inability to determine if a trending or trading range market is at hand. Trend-following indicators such as MACD and moving averages, tend to be whipsawed as markets enter a non-trending congestion phase. On the other hand, overbought/oversold oscillators (which work well during trading range markets) tend to overreact to price pull-backs during trending markets—thereby closing a position prematurely. The Aroon indicator attempts to remedy this by helping you determine when trend-following or overbought/oversold indicators are likely to succeed.
Interpretation
There are basically three conditions that you look for when interpreting the Aroon indicator: extremes at 0 and 100, parallel movement between Aroon Up and Aroon Down, and crossovers between Aroon Up and Aroon Down.
Extremes: When the Aroon Up line reaches 100, strength is indicated. If the Aroon Up remains persistently between 70 and 100, a new uptrend is indicated. Likewise if the Aroon Down line reaches 100, potential weakness is indicated. If the Aroon Down remains persistently between 70 and 100, a new downtrend is indicated.
A strong uptrend is indicated when the Aroon Up line persistently remains between 70 and 100 while the Aroon Down line persistently remains between 0 and 30. Likewise a strong downtrend is indicated when the Aroon Down line persistently remains between 70 and 100 while the Aroon Up line persistently remains between 0 and 30.
Parallel Movement: When the Aroon Up and Aroon Down Lines move parallel with each other (are roughly at the same level), then consolidation is indicated. Expect further consolidation until a directional move is indicated by an extreme level or a crossover.
Crossovers: When the Aroon Down line crosses above the Aroon Up line, potential weakness is indicated. Expect prices to begin trending lower. When the Aroon Up line crosses above the Aroon Down line, potential strength is indicated. Expect prices to begin trending higher.
以下是本人制作的代码:
L14:=LLV(L,14);
ArooUp:
100* (14 - (( If(Ref(L,1)=L14,1,
If(Ref(L,2 ) = L14 ,2 ,
If(Ref(L,3 ) = L14 ,3 ,
If(Ref(L,4 ) = L14 ,4 ,
If(Ref(L,5 ) = L14 ,5 ,
If(Ref(L,6 ) = L14 ,6 ,
If(Ref(L,7 ) = L14 ,7 ,
If(Ref(L,8 ) = L14 ,8 ,
If(Ref(L,9 ) = L14 ,9 ,
If(Ref(L,10) = L14 ,10 ,
If(Ref(L,11) = L14 ,11 ,
If(Ref(L,12 ) =L14 ,12,
If(Ref(L,13) = L14 ,13 ,
If(Ref(L,14) = L14 ,14 ,0) ) ) ) ) ) ) ) ) ) ) ) ) )) ) ) / 14;
H14:=HHV(L,14);
ArooDown:
100* (14 - (( If(Ref(H,1)=H14,1,
If(Ref(H,2 ) = H14 ,2 ,
If(Ref(H,3 ) = H14 ,3 ,
If(Ref(H,4 ) = H14 ,4 ,
If(Ref(H,5 ) = H14 ,5 ,
If(Ref(H,6 ) = H14 ,6 ,
If(Ref(H,7 ) = H14 ,7 ,
If(Ref(H,8 ) = H14 ,8 ,
If(Ref(H,9 ) = H14 ,9 ,
If(Ref(H,10) = H14 ,10 ,
If(Ref(H,11) = H14 ,11 ,
If(Ref(H,12 ) =H14 ,12,
If(Ref(H,13) = H14 ,13 ,
If(Ref(H,14) = H14 ,14 ,0) ) ) ) ) ) ) ) ) ) ) ) ) )) ) ) / 14
3.
阿隆指标(Aroon)是由图莎尔.钱德(Tushar Chande)发明的,它通过计算自价格达到近期最高值和最低值以来所经过的期间数,帮助投资者预测证券价格从趋势到区域区域或反转的变化。Aroon指标由阿隆上升线和阿隆下行线构成,算法如下:
UP = (n - 股价达到近期最高点以来的期间数)/n * 100
Down = (n - 股价达到近期最低点以来的期间数)/n * 100
在分析Aroon指标时,主要观察三种状态;
1、极值0和100。当UP线达到100时,市场处于强势;如果维持在70~100之间,表示一个上升趋势。同样,如果Down线达到0,表示处于弱势,如果维持在0~30之间,表示处于下跌趋势。如果两条线同处于极值水平,则表明一个更强的趋势。
2、平行运动:如果两条线平行运动时,表明市场趋势被打破。可以预期该状况将持续下去,只到由极值水平或交叉穿行西安市出方向性运动为止。
3、交叉穿行:当下行线上穿上行线时,表明潜在弱势,预期价格开始趋于下跌。反之,表明潜在强势,预期价格趋于走高。
|
|
|