Exponential average error in indicator?

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10/30/2019 at 9:38 AM #111612 quote
pieroim
Participant

Average
Hi all,

I took this indicator from a purchased book, but unfortunately in compiling it gives me an error .. I tried various ways to solve the error, but I can’t understand what’s wrong with this code.

In particular I think I have identified the error in the ExponentialAverage.. I tried to pass “nn” after a Round function thinking it could be a problem with the format of the numbers, but nothing.

The code according to the author of the book must work, he also inserted several examples of graphs with this indicator .. but it doesn’t go..
```
if Barindex < 2 then
BU = Close
else
BU = BU[1]-BU[2]/3.414+(1/3.414)*Close
endif

Signal = BU
Noise = Close
SigmaSignal = STD[PP](Signal)
SigmaNoise = STD[PP](Noise)
a = SigmaSignal/SigmaNoise
n = (2/a)-1

if n < 0 then
nn = 1
else
nn = n
endif

//roundedROCvalue = ROUND(nn)

MB = ExponentialAverage[nn](Close)

Return MB COLOURED(0,250,0)
```
10/30/2019 at 10:22 AM #111626 quote

robertogozzi
Moderator

Master

Use more meaningful titles when creating a new topic. Thank you 🙂

What error is reported? you can attach a picture of the error message.

10/30/2019 at 10:36 AM #111630 quote

GraHal
Participant

Master

Use pp = 20 (default value for STD) and the Indicator appears to work, but appears to follow Price profile??

Pier.jpg Oier-2.png

10/30/2019 at 10:43 AM #111633 quote

robertogozzi
Moderator

Master

PP must be defined or assigned a value, as suggested by GraHal.

You should use the value recommended in the book where you read it.

GraHal thanked this post

10/30/2019 at 10:54 AM #111636 quote

pieroim
Participant

Average

PP is an exterval value set to 17,

however now I have done other tests by setting both internal and external PP, even at 20, but it continues to always give me the same error

errore.jpg

10/30/2019 at 11:01 AM #111638 quote

pieroim
Participant

Average

GraHal wrote:

Use pp = 20 (default value for STD) and the Indicator appears to work, but appears to follow Price profile??

SigmaSignal = STD[20](Signal)
SigmaNoise = STD[20](Noise)

Hi, I set it directly in the function, but I have the same error..

Prorealtime v.11.1 – 1.8.0_45

10/30/2019 at 11:19 AM #111641 quote

robertogozzi
Moderator

Master

I have not used v11 so far. I don’t know what that error is.

10/30/2019 at 11:27 AM #111642 quote

pieroim
Participant

Average

Do you know if Nicolas is using the v 11? Maybe he knows this problem ..

10/30/2019 at 12:10 PM #111645 quote

GraHal
Participant

Master

Are you using (17) or correctly [17] … square brackets are needed??

10/30/2019 at 12:12 PM #111646 quote
pieroim
Participant

Average
[17]..

this is the last tested with the same error
```
if Barindex < 2 then
BU = Close
else
BU = BU[1]-BU[2]/3.414+(1/3.414)*Close
endif

Signal = BU
Noise = Close
SigmaSignal = STD[17](Signal)
SigmaNoise = STD[17](Noise)
a = SigmaSignal/SigmaNoise
n = (2/a)-1

if n < 0 then
nn = 1
else
nn = n
endif

MB = ExponentialAverage[nn](Close)
Return MB COLOURED(0,250,0)
```
10/30/2019 at 12:20 PM #111648 quote

GraHal
Participant

Master

Above code works fine on v10.3 … I just ran it on my Platform

10/30/2019 at 12:26 PM #111649 quote

pieroim
Participant

Average

strange.. can you send me a picture with it attached to micro SP500 future.. around last 50 bars? I need of it for testing reason.. this is a step of a more complex indicator.

on M1 (minute) time frame..

Thanks

10/30/2019 at 12:32 PM #111650 quote

GraHal
Participant

Master

I cant see micro SP500 future. as an option, but is this any good?

Attached is what I see as Options for SPTRD

Oier-2-1.png Piere-4.png

10/30/2019 at 12:41 PM #111653 quote

pieroim
Participant

Average

US500 (50$) dec19 is fine for me if you can..

10/30/2019 at 12:57 PM #111654 quote
Vonasi
Moderator

Master
Line 14 means that you could be looking for an average with a period of zero to 0.99999999 which will give an error. Change it to:
```
 
if n < 1 then
```
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