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Hello,
Array size depends on how many data you have
http://www.amibroker.com/guide/h_understandafl.html
You must only access array elements from 0...BarCount-1.
If BarCount is less than your MaxNumExit variable
then you will get an error message.
So: either use symbols that have enough data or
use dynamic variables instead of array http://www.amibroker.com/f?varget
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "oceanchimes" <oceanchimes@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, October 12, 2004 10:24 AM
Subject: [amibroker] Help with Loops
>
>
>
> Hello,
> I have been trying to get a loop to work that has only 7 elements.
> Method #1
> It keeps giving subscript 'out of range',
> The 7 elements are overwritten each iteration.
>
> If I use full array size of barcount it works ok. Method #2
> A code section is below to illustrate what I am trying to do.
>
> Which is the method to employ? or is there a basic mistake in method#1?
>
> I suppose I could use non-array variables for each exit condition,
> but more it is easier to code (convenient) to use an array later in
> the code to determine sell signal and type
>
> thanks for your help
> and the heap of tips from the group in the past
> fe
> =========================================================
> SetOption("InitialEquity", 20000 );
> SetTradeDelays(1,1,1,1);
> SetOption("MaxOpenPositions", 20);
>
> // simple system...
> p1 = 10;
> p2 = 22;
> MaxNumExit = 7;
> // MA crossover
> Sell=0;
> Buy=Cross( MA(C,p2) , MA(C,p1) );
> Buy =ExRem(Buy,Sell);
> Sell = ExRem(Sell,Buy);
>
> Filter = Buy OR Sell;
> //set up array to Check if exit Conditions(7) are met;
> //an array of 7 elements holds the result of each exit condition per
> iteration=i
> //the exit array is initialised to zero at beginning of exit condition
> code
> //at end of exit condition code determine if exit signal and exit type
> number
>
> //METHOD #1 - ERROR
> in_Trade = 0;
> // want to iterate to find exit conditions
> for(i=1; i<BarCount; i++)
> {
> in_Trade[i] = ( in_trade[i-1] OR (Buy[i] AND !Buy[i-1]) ) AND !Sell[i-1];
> //-BELOW ALWAYS SUBSCRIPT OUT OF RANGE ERROR
> for(k=1; k<=MaxNumExit; k++) { ExitP[k] = 0; } //initialise exit array
>
> // exit condition 1 to 7 here
>
> for(k=1; k<=MaxNumExit; k++)
> {
> //determine exit type here-SUBSCRIPT OUT OF RANGE
> }
> }
>
> //METHOD #2 - OK
>
> in_Trade = 0;
> //if change to array size,for all loops
> for(i=1; i<BarCount; i++)
> {
> in_Trade[i] = ( in_trade[i-1] OR (Buy[i] AND !Buy[i-1]) ) AND !Sell[i-1];
> // NO ERROR
> for(k=1; k<BarCount; k++) { ExitP[k] = 0; } //initialise exit array
> }
>
>
>
>
>
>
>
>
>
>
> Check AmiBroker web page at:
> http://www.amibroker.com/
>
> Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
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