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Re: [AmiBroker] graham Kavanagh Support and resistance levels using RSI.



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It is useless for backtesting as it stands, as you need to build in that the previous defined peak or trough has actually occurred on the bar of interest, ie for Peak you need to add (in words) LowestSince Peak is <= (100-%) of that Peak value. Any signal between the previous peak and the bar of where the cross of the % must be ignored.
This is why it only uses Lastvalue and suitable for chart only, or simple explorations/scans using last bar only.

Also has other problems, like inconsistent sensitivity. The Peak and Trough use percentage, however because RSI goes between 0 and 100 the percent change will be more sensitive at the lower values than at the higher. eg 10% of 10 is 1, 10% of 90 is 9
Far better to create a change based on static amount rather than percentage.

You could I suppose change the definition of support levels of Troughs to Peaks using 100-RSI to make the sensitivity more equal,
 eg
SupBase = LastValue(Peak(100-Base,Percent,i));
However this only makes it a mirror of sensitivity around 50 value, not same across the full 0-100 range.


--
Cheers
Graham Kav
AFL Writing Service
http://www.aflwriting.com



On 11/11/2007, Grover Yowell <gyowell@xxxxxxxxxxxx> wrote:

Don,

 

I got your code to work by changing the filter, as you said.

 

But what is your take on the fact that the Zig function is involved so the code can look into the future?

 

Grover

 

From: amibroker@xxxxxxxxxxxxxxx [mailto: amibroker@xxxxxxxxxxxxxxx] On Behalf Of Don Lindberg
Sent: Saturday, November 10, 2007 10:12 AM
To: amibroker@xxxxxxxxxxxxxxx
Subject: RE: [AmiBroker] graham Kavanagh Support and resistance levels using RSI.

 

That probably is due to the fact that I set some filters within the code. Check the line Filter= and set it to what you want. Read the code.

 

Donald F Lindberg


From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of Rasheed Momoh
Sent: Friday, November 09, 2007 6:53 PM
To: amibroker@xxxxxxxxxxxxxxx
Cc: dlindber@xxxxxxxxxxxxx
Subject: RE: [amibroker] graham Kavanagh Support and resistance levels using RSI.

 

hi
just wanted to confirm
1 when i run the code and click explore. it does not pick the support resistance of all the stocks.
out of 205 stocks it only shows 45.
kindly assist


--- On Tue, 11/6/07, Rasheed Momoh wrote:

From: Rasheed Momoh
Subject: RE: [amibroker] graham Kavanagh Support and resistance levels using RSI.
To: amibroker@xxxxxxxxxxxxxxx
Cc: dlindber@xxxxxxxxxxxxx
Date: Tuesday, November 6, 2007, 3:14 PM


I have sent an attachment to show u want the support resistance figures r generating.
for example UAC-PROP on the chart is showing a range of 19-21. the formula you sent me is showing 42.81-37.73.
pls what do i do.

abdulrasheed


--- On Tue, 11/6/07, Don Lindberg wrote:

From: Don Lindberg
Subject: RE: [amibroker] graham Kavanagh Support and resistance levels using RSI.
To: amibroker@xxxxxxxxx ps.com
Date: Tuesday, November 6, 2007, 2:19 PM

I have put in basic code to allow you to run as exploration. You can narrow your search by changing the criteria in the Filter Statement.

 

------------ --------- ------ Begin Code ------------ --------- ---

_SECTION_BEGIN("support and resistant");

//Support and resistance levels using RSI.

//graham Kavanagh May 2003

//Load into Indicator Builder

//Sensitivity of the levels can be changed with the variables

//Can test different numbers live with the Param function ctrl-R with Open pane

RSIperiod = 5; // Param("RSI p",3,14,30,1) ;

Percent = 5; // Param("ZIG %",8,9,15,1) ;

EMAperiod = 5; //Param("EMA p",4,5,10,1) ;

HHVperiod = 5; //Param("HHV p",3,5,10,1) ;

NumLine = 1; //Param("Num Lines",3,1,20, 1);

 

Base = DEMA( RSI(RSIperiod), EMAperiod) ;

 

GraphXSpace=0.5 ;

Plot(C,"" ,colorBlack,styleCandle);

 

for( i = 1 ; i = numline; i++ )

{

ResBase = LastValue( Peak(Base,Percent, i));

SupBase = LastValue( Trough(Base,Percent, i));

Plot(ValueWhen ( ResBase==Base, HHV(H,HHVperiod) ), "Resist Level",

colorRed, styleLine);

Plot(ValueWhen ( supbase==Base, LLV(L,HHVperiod) ), "Support Level",

colorGreen, styleLine);

}

Title = Name () + "; " + Date () + ": Support Resistance Levels using

RSI: " + /*EncodeColor( colorGreen) + " Support Levels are Green;

"+EncodeColor( colorRed) + "Resistance Levels are Red:

"+EncodeColor( colorBlack) +*/ "Num lines = "+WriteVal(numline, 1) ;

Filter=C>10 AND C75 AND ResBase>=1 AND SupBase >=1;

Buy=Sell=Short=Cover= 0;

AddColumn(C,"Close" ,1.2);

AddColumn(ResBase,"Resistance" ,1.2);

AddColumn(SupBase,"Support" ,1.2);

 

_SECTION_END();

 

------------ --------- ---- End Code ------------ ---------

 

Donald F Lindberg


From: amibroker@xxxxxxxxx ps.com [mailto: amibroker@xxxxxxxxx ps.com ] On Behalf Of rashmo_70
Sent: Tuesday, November 06, 2007 1:16 PM
To: amibroker@xxxxxxxxx ps.com
Subject: [amibroker] graham Kavanagh Support and resistance levels using RSI.

 

Please is it possible to do a scan on the formula below to generate
support resistance prices other than browsing each chart?.

thanks.
_SECTION_BEGIN( "support and resistant");
//Support and resistance levels using RSI.
//graham Kavanagh May 2003
//Load into Indicator Builder
//Sensitivity of the levels can be changed with the variables
//Can test different numbers live with the Param function ctrl-R with
open pane
RSIperiod = 5; // Param("RSI p",3,14,30,1) ;
Percent = 5; // Param("ZIG %",8,9,15,1) ;
EMAperiod = 5; //Param("EMA p",4,5,10,1) ;
HHVperiod = 5; //Param("HHV p",3,5,10,1) ;
NumLine = 1; //Param("Num Lines",3,1,20, 1);

Base = DEMA(RSI(RSIperiod) ,EMAperiod) ;

GraphXSpace= 0.5;
Plot(C,"",colorBlac k,styleCandle) ;

for( i = 1; i = numline; i++ )
{
ResBase = LastValue(Peak( Base,Percent, i));
SupBase = LastValue(Trough( Base,Percent, i));
Plot(ValueWhen( ResBase==Base, HHV(H,HHVperiod) ), "Resist Level",
colorRed, styleLine);
Plot(ValueWhen( supbase==Base, LLV(L,HHVperiod) ), "Support Level",
colorGreen, styleLine);
}
Title = Name() + "; " + Date() + ": Support Resistance Levels using
RSI: " + /*EncodeColor( colorGreen) + "Support Levels are Green;
"+EncodeColor( colorRed) + "Resistance Levels are Red:
"+EncodeColor( colorBlack) +*/ "Num lines ="+WriteVal( numline,1) ;
_SECTION_END( );


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