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Patsimmons  
#1 Posted : Sunday, April 6, 2014 12:23:35 PM(UTC)
Patsimmons

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Joined: 4/6/2014(UTC)
Posts: 2

Hello,
I'm trying to write an indicator that will find a peak (call it "A"). Once it does, it should look for another peak (call it "B") within a certain time period before A occurred.

So far:

increasing:= REF(C,-2) - REF(C,-3)
decreasing:= REF(C,-2) - REF(C,-1)

if( (increasing>0) AND (decreasing>0)
A:=REF(C,-2)
A:=0 {if the close 2 periods ago was greater than 3 periods ago, and also greater then the close 1 period ago, A is set to the close 2 periods ago}

After this how do I search for another peak within some time frame beforehand (call it N periods)?

my guess is:

increasing2:= REF(C, -2-N) - REF(C, -3-N)
decreasing2:= REF(C, -2-N) - REF(C, -1-N)

if( (increasing2>0) AND (decreasing2>0)
B:= REF(C,-2-N)
B:=0

Any help would be appreciated
Pat
henry1224  
#2 Posted : Sunday, April 6, 2014 5:41:37 PM(UTC)
henry1224

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have a look at the following functions

Peakbars(Nth , data array , % minimum Change)

Peak( Nth ,Data Array , % Minimum Change)

BarsSince(Data Array)
Patsimmons  
#3 Posted : Sunday, April 6, 2014 6:33:12 PM(UTC)
Patsimmons

Rank: Newbie

Groups: Registered, Registered Users
Joined: 4/6/2014(UTC)
Posts: 2

Interesting, thank you!

I just started working on custom indicators, so I'm not entirely familiar with all the functions I can call.

wabbit  
#4 Posted : Sunday, April 6, 2014 9:56:28 PM(UTC)
wabbit

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Using Alert() :
Code:

lookback:=10;

pk:=Ref(C,-2)<Ref(C,-1) AND Ref(C,-1)>C;

{plot}
pk AND Ref(Alert(pk,lookback),-1);


or another way using BarsSince() :

Code:

lookback:=10;

pk:=Ref(C,-2)<Ref(C,-1) AND Ref(C,-1)>C;

{plot}
pk AND Ref(BarsSince(pk),-1)<=lookback;


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