# Help to identify peak and trough in a indicator

Discussion in 'AmiBroker' started by giuditta, Feb 12, 2013.

1. ### casoniWell-Known Member

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Hello ,
if i understood your requirement , is this you want ?

per=Optimize("Period",Param("Period",14,2,20,1),2,20,1);
percentchange=Optimize("Zig %",Param("Zig %",2,1,20,1),1,20,1);
az= RSI(per);
Plot( az,"",colorWhite,4);
ZZ = Zig(az,LastValue(PercentChange)) ;
Plot(zz,"",4,1);

this plots zz on rsi . and same zz can be applied on price chart
Thank you

2. ### giudittaMember

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HI Casoni,
thanks to your reply. I suppose that you are italian too like me.
My difficulty is to plot a peak of a zig formula. See the picture example in the previous page taken from metastock. I can't create the last formula in amibroker: according to this I need value 1 whenever zig of the zigzag in the middle has a peak and value 0 whenever there is no one.
Is there anyone able to help me? regards

Last edited: Feb 15, 2013
3. ### giudittaMember

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4. ### KelvinHandWell-Known Member

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5. ### sudrisWell-Known Member

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I think you are close enough.

the highlighted ones are the arrays. make sure you use the same array at RHS of "==".

for example, if you want to use the Close array to find the peak then your code should look like below

6. ### giudittaMember

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here is the code of the zig formula.

a = C-2*Ref(H,-1) + Ref(L,-2);
s = V*(C-Ref(H,-1));
q=a+s;
zigq=Zig(q,10);
Plot(Zigq,"zigq",colorWhite);

7. ### hmsanilActive Member

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I tried to overlay this on price, but it not displaying properly.

How to overlay this indicator on price, can anybody please tell me how to do it

Thanks

8. ### casoniWell-Known Member

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hello giuditta ,
are you looking for something like this ?

i have plotted peak-bottom on your indicator ,

please check , if this helps i will post the code.

* this is 60 min chart

thank you

Last edited: Jun 1, 2013
9. ### KelvinHandWell-Known Member

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First thing, when you plot as indicator (means no price chart), what is the value shown on the Y-Axis ?

Does it tally with the price chart value ?
if not why ?
cause there is a Volume play in the formula.

To display the price chart and the non-tally indicator together, do the following:

Plot(Zigq,"zigq",colorWhite, styleOwnScale);

hmsanil likes this.
10. ### KelvinHandWell-Known Member

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Now you show out "My Formula", now i understand why you failed.
Hope the following is what your are trying to do:

Code:
```//--1st indicator
Change1=10;
function First_Indicator()
{
a = C-2*Ref(H,-1) + Ref(L,-2);
s = V*(C-Ref(H,-1));
q = a+s;

zigq=Zig(q,Change1);

return q;
}

Zig_Fml1=First_Indicator();
Plot(Zig_Fml1,"zig1",colorWhite, styleOwnScale);

//-- 2nd Indicator
percdiff = 1;
pkd = Peak(Zig_Fml1,percdiff) == High;
Plot(pkd, "my zig peak",colorYellow,styleOwnScale);

```
If i m not wrong, the problem you had faced:
1. You try to plot on price chart, nothing shown.
3. When you try to plot the following it will never work, it always default to 0.
* pkd = Peak(Zig_Fml1,percdiff) == High;

Why ?
Because your formula contains item 2, no longer able to equal to High.

IF (your script work on matastock AND don't work on Amibroker) THEN
post the original mestastock with your actual picture;
ELSE
i think i got no way to do it.

Last edited: Feb 17, 2013