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RE: [amibroker] Re: Valuewhen issue



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Hello,

 

> Wouldn't x be the exact value of z for the same bar as the first y==1? How does that return an array? If so, how do I "iterate through the values"?

No. You can see the values by trying the code below.  It returns a array that includes the valuewhen result for every bar.

 

Use the following to iterate through this array:

for(i = 0; i < BarCount; i++)

{

  Value = x[i];

}

 

 

y = C == HHV(C, 10);

z = C;

 

x = ValueWhen(y, z, 1);

 

Plot(x[BarCount-1], "value for any index", colorBrown, 1);

Plot(x, "x", 4, 1);

 

Plot(C, "C", 1, 128);

 

Thomas

www.PatternExplorer.com

 

 

-----Original Message-----
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of lucianomt
Sent: Friday, June 26, 2009 2:42 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: Valuewhen issue

 

Thomas, could you explain this further please?

 

Using this example:

x = valuewhen(y, z, 1);

 

Wouldn't x be the exact value of z for the same bar as the first y==1? How does that return an array? If so, how do I "iterate through the values"?

 

Thanks!

 

 

 

 

--- In amibroker@xxxxxxxxxxxxxxx, "Thomas Z." <tzg@xxx> wrote:

> 

> Valuewhen returns a array, therefore you would need to iterate through the

> values.

>

>

>

> SYNTAX

>

> valuewhen(_expression_, ARRAY, n = 1)

>

>

> RETURNS

>

> ARRAY

>

>

> FUNCTION

>

> Returns the value of the ARRAY when the _expression_ was true on the n -th

> most recent occurrence. Note: this function allows also 0 and negative

> values for n - this enables referencing future

>

>

> EXAMPLE

>

> valuewhen( cross( close, ma(close,5) ) ,macd(), 1)

>

>

>

>

> Thomas

>

> www.PatternExplorer.com

>

>

>

> -----Original Message-----

> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf

> Of lucianomt

> Sent: Thursday, June 25, 2009 11:00 PM

> To: amibroker@xxxxxxxxxxxxxxx

> Subject: [amibroker] Valuewhen issue

>

>

> t = array with all troughs

>

> p = array with all peaks

>

>

> tbar = ValueWhen(t, BarIndex(), 1); 

>

> pbar = ValueWhen(p, BarIndex(), 1);

>

> if(pbar < tbar)

>

> {

>

> [CODE]

>

> }

>

>

> I have two arrays marking all the peaks and troughs, respectively,

> previously filled with ZigZag. I want to check whether the peak or trough

> comes first, so I tried to get the respective bars using Valuewhen and then

> checking using IF.

>

>

> Why am I getting an error 6 message on the IF statement? I thought ValueWhen

> returned a specific value not an array...

>

>

>

>

> ------------------------------------

>

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**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.

TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com

TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)

For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/





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