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OK,
between Tomasz and Ken I getting closer. Here is what I have.
Getting a syntax error at the
SR = StoRSI
point in the code.
The include path is set in Preferences
/*
Stochastic - RSI , and ADX
Try it on SMH
*/
#include
StoRSI;
RSIPer=
13;//Optimize("RSIPer",
8, 3, 15,
1);
EMAPer=
11;//Optimize("EMAPer",
8, 5, 20,
1);
SR =
StoRSI(Close,RSIPer,EMAPer);
Error on this line
Buy =
Cross(17,SR)
AND
ADX(14)>20;
Sell= Cross(SR,83) ;
Short = Sell;
Cover = Buy;
//Plot(Equity(),"Equity",1,1);
Plot(SR,"StoRSI",1,1);
// include file ***** located at C:\program files\amibroker\include
/* StoRSI, input array (normally Close), RSI period, EMA period */
/* typical settings: IA = Close, Per = 14, EMAPer = 8 */
/* written by Sid Kaiser, 24 Dec 03 */
function StoRSI( IA, RSIPer, EMAPer )
{
local IA;
local Per;
local EMAPer;
result = EMA((RSIa(IA, RSIPer) - LLV(RSIa(IA, RSIPer), EMAPer)) / (HHV
(RSIa(IA, RSIPer), EMAPer) - LLV(RSIa(IA, RSIPer), EMAPer)),3)*100;
return result;
}
At 11:57 PM 12/24/2003 +0100, you wrote:
Sid,
No, param1 statement in only in the main file. Include file contains ONLY your function that takes an argument:
// BEGIN.. contents of the file_with_your_function.afl ...
function MyFunction( periods )
{
return AMA( C, 2/(periods+1));
}
/// END
-------------------
---------------------
Contents of the main file:
// BEGIN
#include <file_with_your_function.afl>
param1 = Optimize("param1", 5, 1, 10, 1 );
buy = C > MyFunction( param1 );
// END
At run time param1 from MAIN file is passed BY VALUE to 'periods' argument in the function.
That way your function is written ONCE and can be used like ANY OTHER built-in function in AFL
(like MA, ADX, etc )
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: Sidney Kaiser
To: amibroker@xxxxxxxxxxxxxxx
Sent: Wednesday, December 24, 2003 10:22 PM
Subject: Re: [amibroker] passing variables
Great...but I am programmatically challenged. Is the param1 statement in the included file, it looks like it would have to be there. Could you provide a more elaborate example please?
Cheers
Sid
At 10:11 PM 12/24/2003 +0100, you wrote:
Sid,
There is absolutely NO problem with that.
You can use optimize and pass arguments to ANY function defined in external file.
#include <file_with_your_function.afl>
param1 = Optimize("param1", 5, 1, 10, 1 );
buy = C > MyFunction( param1 );
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: Sidney Kaiser
To: amibroker@xxxxxxxxxxxxxxx
Sent: Wednesday, December 24, 2003 10:07 PM
Subject: RE: [amibroker] passing variables
Clarification:
What I am talking about is the ability to run optimize on the code that is in the include file. This means the variables are defined in the main program and the current value is passed to the include program for the range of the optimization.
Upon further reading of the help files I am beginning to think this is NOT possible in AB. Someone correct me if I am wrong on this.
Ken, thanks for your routine, BTW, I think what you posted is STOCH + RSI rather than StochRSI which is the stochastic of RSI.
Cheers and Merry Christmas to all
Sid
At 03:28 PM 12/24/2003 -0500, you wrote:
Hi Sid:
I added this to my function file:
function StoRSI(RSIPer,EMAPer)
{
Low1=LLV(C,7);
High1=HHV(C,7);
return (EMA(100*(C - Low1)/(High1 - Low1),EMAPer)/2) + (RSI(RSIPer)/2);
}
Note the naming and the variable positions in the declaration of the StoRSI function.
I plotted this in my IB window:
X=StoRSI(14,13);
Plot(50,"",7,1);
Plot(X,"StoRSI",5,1);
The C/O/H/L/V arrays are always available, so I only "passed" two variables, the EMA period and the RSI Period. It gets "passed" when you write the function within your regular AFL code. In my case, following what a lot of others do, I #include a regular (and growing) MyFunctions.AFL file.
Hope this helps.
Ken
-----Original Message-----
From: Sidney Kaiser [mailto:s9kaiser@xxxxxxxxxxx]
Sent: Wednesday, December 24, 2003 12:02 PM
To: AmiBroker@xxxxxxxxxxxxxxx
Subject: [amibroker] passing variables
I use StochRSI fairly often and rather than re-write it all the time I
decided to make a dedicated AFL file that I can include in the other files
where I want to use the function. Of course to be of any use, the
variables need to be passed from the calling program to the included
program. I know how to do that in TS, but I don't see how to do it in AFL.
For my StochRSI fn I would want to pass the Array (usually Close), the RSI
period and the smoothing MA to the include file. Three variables in all.
How is this done?
TIA
Sid
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