Re: [amibroker] How to code For loops without refering to array elements

[Tomasz Janeczko]

Hello,   AFL offers actually superset of capabilities of "general purpose" language like Pascal as it allows both "normal" (i.e. scalar) constructs like Pascal AND array based operations (not available in Pascal).   It is UP TO YOU which one you use. There are NO limitations and of course in your case j variabel CAN be used as moving average period.   The only problem is YOUR SKILL, not the language.   Correct way to code thing like this "// this checks whether the price is above its moving av 52 bars ago and if so checks whether the close crossed mov av during the last 52 bars for a range of moving av periods and return the moing av period value when it crosses"   is ( I am showing ONE OF MANY possible ways to code this, specifially I am showing the way how to code it WITHOUT REF() statement just to show you how you can use subscript operator (as in Pascal))   // this checks whether the price is above its moving av 52 bars ago //AND if so checks whether the Close crossed mov av during the last 52 //bars for a range of moving av periods AND return the moing av period //value when it crosses function CheckMACross( period, Lookback ) {   result = False;   Cma = MA( C, period );   bar = BarCount - 1 - Lookback;   if( Close[ bar  ] < Cma[ bar ] )   {     while( bar < BarCount )     {        if( Close[ bar ] > Cma[ bar ] )       {          result = True;       }     }   }   return result; } function WCBelowMALine() {  found = False;  for ( period = 52; j < 3 AND NOT found; j--)  {    found = CheckMACross( j, 52 );     }  return result; }   Best regards, Tomasz Janeczko amibroker.com ----- Original Message ----- From: iceboundbug To: amibroker@yahoogroups.com Sent: Sunday, March 26, 2006 1:44 PM Subject: [amibroker] How to code For loops without refering to array elements Hi all For up trending stoks, I want to find the shortest Simple moving average period values that do not cross the price within any 52 bar period for a portfolio of securities. Obviously different stocks will have different period values at any given point in time and also they will very with time within a stock. I started coding the following.  But it seems the variables that we can use in a For loop can only be used for Array element and not the  way general computer languages like Pascal work.  I wold appreciate if someone can help me to get this code to work - it appears that the j variable cannot be used to increment the moving av period !! Thanks in advance //================================================== // this checks whether the price is above its moving av 52 bars ago and if so checks whether the close crossed mov av during the last 52 bars for a range of moving av periods and return the moing av period value when it crosses function WCBelowMALine(C) { result = 0; for (j=52; j<3; j--) { result = IIf(Ref(C,-52) < Ref(MA(C,j),-52), -1,IIf(Hold(Cross(MA (C,J),C),52),j+1 ,9)); } return result; } //================================================== Please note that this group is for discussion between users only. To get support from AmiBroker please send an e-mail directly to SUPPORT {at} amibroker.com For other support material please check also: http://www.amibroker.com/support.html YAHOO! GROUPS LINKS  Visit your group "amibroker" on the web.    To unsubscribe from this group, send an email to:  [EMAIL PROTECTED]    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.