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<FONT face=Arial color=#0000ff
size=2>Graham, global variables are displayed like so:
<FONT face=Arial color=#0000ff
size=2>
1) You
can declare variables as global:
<FONT
color=#000000>Global var1, var2, var3;
This
is usually done at the top of your code and (optional) inside your
functions for clarity. G<FONT
face=Arial color=#0000ff size=2>lobal variables will be visible thoughout your
code.
<FONT face=Arial color=#0000ff
size=2>
2) You
can return many single numbers in an array:
Result[0] =
Var1;
Result[1] =
Var2;
Result[2] =
var3;
Return
Result;
<FONT face=Arial color=#0000ff
size=2>
You
extract the the other way around: Var1 = Result[0];
<FONT face=Arial color=#0000ff
size=2>
3) you
can encode just about anything in a string, this will allow you to return any
number of tickers with their Rank and Scores:
<FONT face=Arial color=#0000ff
size=2>
function
Test() { R="";TickerCount=0;
// The
following would be calculated for each ticker Ticker = "AAPL"; Rank =
1; Score = 1.534; // I For each ticker I add the dadat to a data
string R =
Ticker+","+NumToStr(Rank,1.0,False)+","+NumToStr(Score,1.3,False)+",";
TickerCount++;
// an increment a ticker counter // when done I prefix the
Tickercount Result = NumToStr(TickerCount,1.0)+","+R; return
Result; }
t = Test(); // call
function and extract parametersTickerCount= StrToNum(StrExtract(t,0));
Ticker = StrExtract(T,1);Rank = StrToNum(StrExtract(t,2));Score =
StrToNum(StrExtract(t,3));
// Show
resultTitle =
"TickerCount="+NumToStr(TickerCount,1.0)+"\n"+"ticker="+Ticker+"\n"+"Rank="+NumToStr(Rank,1.0)+"\n"+"Score="+NumToStr(Score,1.3);
<FONT face=Arial color=#0000ff
size=2>
<FONT face=Arial color=#0000ff
size=2>
<FONT face=Tahoma
size=2>-----Original Message-----From: Graham
[mailto:gkavanagh@xxxxxxxxxxxxx]Sent: Monday, May 10, 2004 7:08
PMTo: amibroker@xxxxxxxxxxxxxxxSubject: RE: [amibroker]
Functions and proceduresThanks Ara for your
explanationI am uncertain how you do this, can you provide as example
of this." or you can define all the parameters you want as global
variables and onceyou call the function all variables will have the
correct value "say I have 3 variables resulting from the
dataBased on 2 inputs of PerA = 3;PerB = 6;My
longwinded code calculation gives output variablesVar1
Var2Var3I want to compare the output variables,
exampleVar1(PerA) - Var1(PerB)Var2(PerA) -
Var2(PerB)Var3(PerA) - Var3(PerB)Cheers,Graham<A
href="">http://e-wire.net.au/~eb_kavan/-----Original
Message-----From: Ara Kaloustian [mailto:ara1@xxxxxxxxxx] Sent:
Tuesday, May 11, 2004 6:51 AMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re:
[amibroker] Functions and proceduresGraham,for the time being
therwe is no difference between functions and proceduresin
AB.Typically Functions return one value, while Procedures return
none.... andTJ will probably implement it that way later.In order
to get multiple variable reurned, you can do it in 2 ways:1. Make
multiple calls to the function and select what to
return.Example:function Calculate(Input1,
Input2,....,returnvariable){// calculate
variablesreturnparamif (return variable == 1)
returnparameter = variable1;if (return variable == 2)
returnparameter = variable2;etc.return
returnparameter;}or you can define all the parameters you want
as global variables and onceyou call the function all variables will have
the correct valueAra----- Original Message ----- From:
"Graham" <gkavanagh@xxxxxxxxxxxxx>To:
<amibroker@xxxxxxxxxxxxxxx>Sent: Monday, May 10, 2004 3:32
PMSubject: [amibroker] Functions and procedures> The
difference between functions and procedures is something I
havetrouble> understanding even after reading the descriptions in
the help files.Hoping> someone can provide me with where procedures
could be used instead of a> function.>> Secondly I would
like to run explorations using a fairly complex code and> have multiple
outputs. An example is I want to run various P&F codes with>
different box sizes to find various signals. My attempts have found that
I> can only get one variable out of a function. Is this correct? So far
I> basically set up the base code in an #include file and declare the
input> variable before the include statements>>
Eg>> Reverse = 3 ; //
reversal requirement> #pragma nocache> #include "C:\Program
Files\AmiBroker\AFL PF System\PnF System Base.afl">> Reverse =
6 ; // reversal requirement>
#pragma nocache> #include "C:\Program Files\AmiBroker\AFL PF System\PnF
System Base.afl">> Unfortunately when I do this I must then
reassign local names to theoutputs> from the base file for each
output. My system has many outputs that I use,> eg Average column
length, average bars per column, average inactive bars>
etc.>> Hope this is clear what I am trying to do and any help
appreciated. A> multiple output function, or another method, could save
a lot of my typing>> Cheers,> Graham> <A
href="">http://e-wire.net.au/~eb_kavan/>>>>>>
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