RE: [amibroker] Gaussian Moving average

[Terry]

The problem is you are beginning on bar 2. When you use something with a period, i.e., ROC(Array,Period), MA(Array,Period), Amibroker returns the EMPTY value until there have been enough periods to get a valid result (this is a good thing, a lot of T/A software starts giving you (bogus) results right away before there are enough periods).   So, either do what I have shown below (which is good up to 100 periods) or transmit the period as an argument and start there instead of 2.   SetBarsRequired(100000,0); PI = 3.1415926;   function IIR2( input, f0, f1, f2 ) {     result = 0; //[ 0 ] = input[ 0 ]; //Just blank the entire array     //result[ 1 ] = input[ 1 ];       for( i = 100; i < BarCount; i++ ) //Don't compute until we have valid (non-Empty) data     {        result[ i ] = f0 * input[ i ] +                      f1 * result[ i - 1 ] +                      f2 * result[ i - 2 ];     }      return result; }   function GSMA( input, Period ) {   N = 0;   an = 2 * PI / Period;   c0 = b0 = 1;   c1 = b1 = b2 = a1 = a2 = gamma1 = 0;   beta1 = 2.415 * ( 1- cos( an ) );   alpha = -beta1 + sqrt( beta1 ^ 2 + 2 * beta1 );   alpha1 = ( cos( an ) + sin( an ) - 1 ) / cos( an );   {      fo = alpha ^ 2;      f1 = 2 * ( 1- alpha );      f2 = -( 1 - alpha ) * ( 1 - alpha );   }   return IIR2( input, fo,f1,f2); } A = ROC(C,20); period = Param("period",13,1,40,1);   //Plot( Close, "Price", colorBlack, styleCandle ); Plot( GSMA( A,period), "GSMA", colorRed );   -- Terry   -----Original Message----- From: amibroker@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of karthikmarar Sent: Sunday, September 03, 2006 03:55 To: amibroker@yahoogroups.com Subject: [amibroker] Gaussian Moving average   Hi   I made the folowing code for Gaussian Moving average. It works fine for close, high etc. But does not work if I want to use it on any indicator. For example when I substitute close with say ROC the output goes to zero. Can anybody explain where I am going wrong.     SetBarsRequired(100000,0); PI = 3.1415926;   function IIR2( input, f0, f1, f2 ) {     result[ 0 ] = input[ 0 ];     result[ 1 ] = input[ 1 ];       for( i = 2; i < BarCount; i++ )     {        result[ i ] = f0 * input[ i ] +                      f1 * result[ i - 1 ] +                      f2 * result[ i - 2 ];     }      return result; }   function GSMA( input, Period ) {   N = 0;   an = 2 * PI / Period;   c0 = b0 = 1;   c1 = b1 = b2 = a1 = a2 = gamma1 = 0;   beta1 = 2.415 * ( 1- cos( an ) );   alpha = -beta1 + sqrt( beta1 ^ 2 + 2 * beta1 );   alpha1 = ( cos( an ) + sin( an ) - 1 )/cos( an );    {     fo = alpha ^ 2;     f1 = 2 * ( 1- alpha ); f2 = -( 1 - alpha )*( 1 - alpha );   }       return IIR2( input, fo,f1,f2); } A=C; period=Param("period",13,1,40,1);   //Plot( Close, "Price", colorBlack, styleCandle ); Plot( GSMA( A,period), "GSMA", colorRed );   regards                     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   <*> To visit your group on the web, go to:     http://groups.yahoo.com/group/amibroker/   <*> To unsubscribe from this group, send an email to:     [EMAIL PROTECTED]   <*> Your use of Yahoo! Groups is subject to:     http://docs.yahoo.com/info/terms/     __._,_.___ 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 SPONSORED LINKS Software support Small business finance Business finance online Business finance training Business finance course 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. __,_._,___