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[EquisMetaStock Group] The Metastock code published for the APE article (TASC April 2006) incorrect?



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Am I the only one think that the Metastock code published is incorrect?

I don't see the code did anything to "AVERAGE" the peak excursion for
a given data series.  Could anyone please confirm this?

Thanks!

biobuck




METASTOCK: AVERAGE PEAK EXCURSION (APE) 

Chris Young's article in this issue, "The Average Peak Excursion," includes three formulas for calculating the rate of return. These formulas are listed below as indicators. 

To enter these indicators into MetaStock, follow these steps: 

1. In the Tools menu, select Indicator Builder. 
2. Click New to open the Indicator Editor for a new indicator. 
3. Type the name of the formula. 
4. Click in the larger window and type in the formula. 
5. Click OK to close the Indicator Editor.
Name:  Average Peak Excursion
Formula:
x:==Input("number of periods for APE",1,200,1);
Max( Abs(HHV(H, x) - Ref(O, -(x-1))), Abs(LLV(L, x) - Ref(O, -(x-1))) )
Name:  APE ratio
Formula:
x:==Input("number of periods for APE ratio",2,200,25);
ax:== Max( Abs(HHV(H, x) - Ref(O, -(x-1))), Abs(LLV(L, x) - Ref(O, -(x-1))) );
a1:== Max( Abs(H - O), Abs(L - O) );
ax / a1
Name:  APE Alpha
Formula:
x:==Input("number of periods for APE",2,200,25);
ax:== Max( Abs(HHV(H, x) - Ref(O, -(x-1))), Abs(LLV(L, x) - Ref(O, -(x-1))) );
a1:== Max( Abs(H - O), Abs(L - O) );
Log( ax / a1 ) / Log( x )

These formulas can also be used in explorations, but the first line will need to be changed first. The Input() function only works in indicators. For the explorations, replace this line: 
  

 x:==Input("number of periods for APE",2,200,25);
with this line:
 x:== 25;

 The number typed in after x is the number of periods used for the long-term Ape calculation and can be any value desired. 
  

--William Golson 
MetaStock Support Representative 
Equis International (A Reuters Company) 
801 265-9998, www.metastock.com







 
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