Hi 
    Russ,
    I took a 
    quick look at the alanhull website and at first glance did not see anything 
    about your indicator.  I guess I need to register?  Anyways the 
    indicator looked interesting to me and I thought having the indicator above 
    the prices would also be beneficial, so I created a channel.  For lack 
    of a better name, I call it a 
    Hull channel.  What?s 
    interesting about the Hull 
    channel is that it shows consolidation vs. trending pretty well.  The 
    consolidation areas are bracketed by flat lines where the trending areas the 
    channel has a slope.  The trending part of the channel is actually very 
    similar to a Keltner channel.  Here?s the 
    Hull channel code if anyone is 
    interested:
    //
    // 
    Hull 
    Channel
    //
    periods 
    = Param("periods", 
    13,2,100,1);
    ATRmult = 
    Param("ATR 
    mult", 
    2.5,1.0,6.0,.25);
    LR = 
    LinearReg(C,periods);
    LR_ATRl = 
    LR - (ATR(periods)*ATRmult);
    LR_ATRu = 
    LR + (ATR(periods)*ATRmult);
    HClower 
    = 0;  
    // Hull 
    Channel upper line
    HCupper = 
    0;  
    // Hull 
    Channel lower line
    for 
    (i=periods; i<BarCount; 
    i++) {
           
    if(LR[i] > 
    HClower[i-1]) 
    {
                  
    if(LR_ATRl[i] 
    > HClower[i-1])
                         
    HClower[i] = LR_ATRl[i];
                  
    else
                         
    HClower[i] = HClower[i-1];
           
    }
           
    else
                  
    HClower[i] = LR[i];
           
    if(LR[i] < 
    HCupper[i-1]) 
    {
                  
    if(LR_ATRu[i] 
    < HCupper[i-1])
                         
    HCupper[i] = LR_ATRu[i];
                  
    else
                         
    HCupper[i] = HCupper[i-1];
           
    }
           
    else
                  
    HCupper[i] = LR[i];
    }
    Plot( HClower, 
    "HC 
    lower", 
    ParamColor("HC 
    color", colorWhite ), ParamStyle("HC 
    style") 
    );
    Plot( HCupper, 
    "HC 
    upper", 
    ParamColor("HC 
    color", colorWhite ), ParamStyle("HC 
    style") 
    );
    Regards,
    David
    
    
    
    
    From: 
    amibroker@xxxxxxxxxps.com [mailto:amibroker@yahoogroups.com] 
    On Behalf Of 
    russ_shor
Sent: 
    03/01/2007 4:04 AM
To: 
    amibroker@xxxxxxxxxps.com
Subject: [amibroker] Re: Help re 
    converting metastock code
 
    
    
    
    Hi 
    David 
thanks for the code. Please check out 
    www.alanhull.com.au. His online
tutorial is very 
    interesting.
Kind regards
Russ
--- In amibroker@xxxxxxxxxps.com, 
    "dbw451" <dbw451@xxx> wrote:
>
> Hi Russ,
> 
> 
    
> 
> The MetaStock PREV function is a strange function that 
    represents the
> previous value of the function which contains it. I 
    chose to write
a loop
> to calculate the indicator values. Your 
    indicator looks
interesting; what
> is it called and how do you use 
    it? 
> 
> 
> 
> The following code was written for 
    readability to help explain the PREV
> function, not minimal code 
    optimization (although the code is fast as
> written):
> 
    
> 
> 
> // MetaStock Code
> 
> // 
    if(LinearReg(C,13)>PREV,if(LinearReg(C,13)-(ATR(13)*2.5)>PREV,
> 
    
> // 
    LinearReg(C,13)-(ATR(13)*2.5),PREV),LinearReg(C,13));
> 
    
> 
> 
> periods = Param("periods", 
    13,2,100,1);
> 
> LR = LinearReg(C,periods);
> 
    
> LR_ATR = LR - (ATR(periods)*2.5);
> 
> 
> 
    
> MyInd = 0; // Indicator to calculate, MyInd[i-1] = MetaStock 
    PREV
> 
> PREV = 0;
> 
> 
> 
> for 
    (i=periods; i<BarCount; i++) {
> 
> PREV[i] = 
    MyInd[i-1];
> 
> if(LR[i] > PREV[i]) {
> 
> 
    if(LR_ATR[i] > PREV[i])
> 
> MyInd[i] = LR_ATR[i];
> 
    
> else
> 
> MyInd[i] = PREV[i];
> 
> 
    }
> 
> else
> 
> MyInd[i] = LR[i];
> 
> 
    }
> 
> 
> 
> Plot( MyInd, "My Indicator", 
    ParamColor("My Ind color", colorRed ),
> ParamStyle("My Ind 
    style") );
> 
> 
> 
> 
> 
> 
    Regards,
> 
> 
> 
> David
> 
> 
> 
    
> _____ 
> 
> From: amibroker@xxxxxxxxxps.com 
    [mailto:amibroker@xxxxxxxxxps.com]
On 
    Behalf
> Of russ_shor
> Sent: 02/28/2007 7:40 AM
> To: amibroker@xxxxxxxxxps.com
> 
    Subject: [amibroker] Help re converting metastock code
> 
> 
    
> 
> Hi re a lower deviation metastock can someone help convert 
    to
> Amibroker. I use version 4.6
> 
> Metastock 
    code:
>
If(LinearReg(c,13)>PREV,If(LinearReg(C,13)-(ATR(13)*2.5)>PREV,LinearReg(C,13
> 
    )-(ATR(13)*2.5),PREV,LinearReg(C,13));
>