Wide Range study?

[omni72]

i found the Narrow Range study, but is there an equivalent Wide Range indicator? i've looked in the studies but don't see it listed under 'Wide Range' and didn't see anything else that looked similarly named.

[SgtJ]

Are you looking for outside bar?

[omni72]

well, actually, i'm looking for the WR7 which is the opposite of the NR7. it's just the widest bar (which won't necessarily be an outside bar) in n bars, while the NR is the narrowest bar (which won't necessarily be an inside bar) in n bars. Ideally, i'd like to see a single study with NR/WR inputs.

[SgtJ]

ah, ok. Probably an easy study to create, though I'm not sure of the most efficient way.

[omni72]

Originally Posted by SgtJ

ah, ok. Probably an easy study to create, though I'm not sure of the most efficient way.

right, and i'm guessing it could probably be cannibalized from something like Scottorama did for volume. i'm dinking around with the CPP file, since i have no coding experience at all i'm using stuff like duct tape, crayons, twine, paper clips, and silly string. i'm guessing it will end up looking kind of like this if i keep at it

[SgtJ]

lol, that's about the extent of my knowledge as well. I looked for the code for the NR study but didn't see it. That'll get you 90% of the way to WR. I'm sure it's easy to do, but to make it adjustable on the fly and not hardcode the lookback period would require a little effort for me.

[omni72]

thx for looking. agreed. i'm thinking with a little reverse engineering i might be able to mutate the Narrow Range study into a NR/WR custom. is the CPP code for the NR study available to SC users?

[SgtJ]

Just thinking, you can always do something w/ the ATR study set to 1 period to generate your values.

[SgtJ]

I just put something together (hardcoded), WR7...though not sure how to prevent consecutive positives.

http://www.sierrachart.com/userimage...ploadImage.png

[omni72]

Originally Posted by SgtJ

Just thinking, you can always do something w/ the ATR study set to 1 period to generate your values.

while i appreciate your idea, i'm not sure i follow. even on a n=1 ATR it will consider:

The difference between the current high and the current low
The difference between the current high and the previous close
The difference between the current low and the previous close

in order to determine the 'true range'.

meanwhile, in a W/NR-n study it would just tell me which bars over the last n bars had the biggest and smallest ranges (using H/L only).

as always, thanks for your input.

[SgtJ]

This is crude, but may help

CPP Code:

SCSFExport scsf_WideRangeBar(SCStudyGraphRef sg)
{
    if (sg.SetDefaults)
    {
        
        sg.GraphName = "Wide Range Bar";
        sg.StudyDescription = "Wide Range Bar";
        sg.FreeDLL = 0;

        sg.DrawZeros = 0;  // false
        sg.GraphRegion = 0;
        
        sg.Subgraph[0].Name = "WRB";
        sg.Subgraph[0].DrawStyle = DRAWSTYLE_COLORBAR;
        sg.Subgraph[0].LineWidth = 1;
        sg.Subgraph[0].PrimaryColor = RGB(255,128,0);
        sg.AutoLoop = 1;
        
        return;
    }
    
    SCFloatArrayRef High = sg.BaseDataIn[SC_HIGH];
    SCFloatArrayRef Low = sg.BaseDataIn[SC_LOW];
    SCFloatArrayRef Out = sg.Subgraph[0].Data;
    

        if ((High[sg.Index]-Low[sg.Index])>(High[sg.Index - 1]-Low[sg.Index - 1])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index - 2]-Low[sg.Index - 2])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index -3]-Low[sg.Index -3])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index -4] - Low[sg.Index -4])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index -5]-Low[sg.Index -5])&&(High[sg.Index] - Low[sg.Index])>(High[sg.Index -6] - Low[sg.Index -6])&&(High[sg.Index] - Low[sg.Index])>(High[sg.Index -7]-Low[sg.Index -7]))
            Out[sg.Index] = High[sg.Index];
        else
            Out[sg.Index] = 0;
    
} 


[gregorfx]

Sierra,

is there a study for this by now? Widest bar from last x bars?

Thanks

[SC_SupportGroup]

We do not think so. You will need to create this one if you require it.

[gregorfx]

thx

[gregorfx]

Originally Posted by SgtJ

This is crude, but may help

CPP Code:

SCSFExport scsf_WideRangeBar(SCStudyGraphRef sg)
{
    if (sg.SetDefaults)
    {
        
        sg.GraphName = "Wide Range Bar";
        sg.StudyDescription = "Wide Range Bar";
        sg.FreeDLL = 0;

        sg.DrawZeros = 0;  // false
        sg.GraphRegion = 0;
        
        sg.Subgraph[0].Name = "WRB";
        sg.Subgraph[0].DrawStyle = DRAWSTYLE_COLORBAR;
        sg.Subgraph[0].LineWidth = 1;
        sg.Subgraph[0].PrimaryColor = RGB(255,128,0);
        sg.AutoLoop = 1;
        
        return;
    }
    
    SCFloatArrayRef High = sg.BaseDataIn[SC_HIGH];
    SCFloatArrayRef Low = sg.BaseDataIn[SC_LOW];
    SCFloatArrayRef Out = sg.Subgraph[0].Data;
    

        if ((High[sg.Index]-Low[sg.Index])>(High[sg.Index - 1]-Low[sg.Index - 1])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index - 2]-Low[sg.Index - 2])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index -3]-Low[sg.Index -3])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index -4] - Low[sg.Index -4])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index -5]-Low[sg.Index -5])&&(High[sg.Index] - Low[sg.Index])>(High[sg.Index -6] - Low[sg.Index -6])&&(High[sg.Index] - Low[sg.Index])>(High[sg.Index -7]-Low[sg.Index -7]))
            Out[sg.Index] = High[sg.Index];
        else
            Out[sg.Index] = 0;
    
} 


SgtJ, do you have a cpp file for this, I have troubles building this on my own.

thx

[gregorfx]

Sierra team,

please help me with that code (that was created from sgtj above):

------
SCSFExport scsf_WideRangeBar(SCStudyGraphRef sg)
{
if (sg.SetDefaults)
{

sg.GraphName = "Wide Range Bar";
sg.StudyDescription = "Wide Range Bar";
sg.FreeDLL = 0;

sg.DrawZeros = 0; // false
sg.GraphRegion = 0;

sg.Subgraph[0].Name = "WRB";
sg.Subgraph[0].DrawStyle = DRAWSTYLE_COLORBAR;
sg.Subgraph[0].LineWidth = 1;
sg.Subgraph[0].PrimaryColor = RGB(255,128,0);
sg.AutoLoop = 1;

return;
}

SCFloatArrayRef High = sg.BaseDataIn[SC_HIGH];
SCFloatArrayRef Low = sg.BaseDataIn[SC_LOW];
SCFloatArrayRef Out = sg.Subgraph[0].Data;


if ((High[sg.Index]-Low[sg.Index])>(High[sg.Index - 1]-Low[sg.Index - 1])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index - 2]-Low[sg.Index - 2])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index -3]-Low[sg.Index -3])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index -4] - Low[sg.Index -4])&&(High[sg.Index]-Low[sg.Index])>(High[sg.Index -5]-Low[sg.Index -5])&&(High[sg.Index] - Low[sg.Index])>(High[sg.Index -6] - Low[sg.Index -6])&&(High[sg.Index] - Low[sg.Index])>(High[sg.Index -7]-Low[sg.Index -7]))
Out[sg.Index] = High[sg.Index];
else
Out[sg.Index] = 0;

}

----------

If I enter these into Wordpad and save it say as widestbar.cpp and try to build Advanced study DLL from SIerra, it doesn't work. I save the file in correct directory.

What must I do differently?

Thank you.

[nkhoi]

if you look at the cpp sample studies.cpp you know that you need a header like this

/*****************************************************************************
	This is a C++ source code file.  This file contains example Advanced Custom
	Study functions.  It also contains functions for some built-in studies
	in Sierra Chart.
*****************************************************************************/

#include "sierrachart.h"

/****************************************************************************/

SCDLLName("Sierra Chart Custom Studies and Examples")

/*============================================================================
	This example code calculates a simple moving average (30 period by
	default).
----------------------------------------------------------------------------*/
// SCSFExport scsf_SimpMovAvg(SCStudyGraphRef sc)

so I guess you replace ("Sierra Chart Custom Studies and Examples") with ("WideRangeBar") then paste them in

[gregorfx]

thanks alot

[SC_SupportGroup]

We will include this study in the next release as a user contributed study. You will be able to find it under:
Analysis >> Studies >> Add Custom Study >> Sierra Chart Custom Studies and Examples >> (name of study)

[gregorfx]

Originally Posted by SC_SupportGroup

We will include this study in the next release as a user contributed study. You will be able to find it under:
Analysis >> Studies >> Add Custom Study >> Sierra Chart Custom Studies and Examples >> (name of study)

great, thanks