Re: [amibroker] Re: Heikin-Ashi code modification as per e-signal help needed:

[Tomasz Janeczko]

>From what i see HaOpen calculated in e-signal uses (open+close)/2 >previous bar and afl formula does it with close only/2??? I am not >afl programmer, No. It is perfectly the same.   It uses:   HAOpen = prev(Haclose)/2 + prev(HAOpen)/2;   This is the way how AMA function works http://www.amibroker.com/f?ama http://www.amibroker.com/f?ama2     AMA function works so it implements recursive algorithm.   output = AMA( input, factor )   is equivalent to the following looping code:   for( i = 1; i < BarCount; i++ ) {    output[ i ] = factor[ i ] * input[ i ] + ( 1 - factor[ i ] ) * output[ i - 1 ]; }   In Heikin-Ashi code you see this:   HaOpen = AMA( Ref( HaClose, -1 ), 0.5 );   So, now replace input with YesterdayHAClose, factor with 0.5 and output with HAOpen and you will get:   for( i = 1; i < BarCount; i++ ) {    HaOpen[ i ] = 0.5 * YesterdayHAClose[ i ] + ( 1 - 0.5 ) * HaOpen[ i - 1 ]; }   Where HAOpen[ i ] is current bar value of HAOpen, and HAOpen[ i - 1 ] is PREVIOUS bar value of HAOpen.   So it is exactly equivalent to:   HAOpen = AMA( YesterdayHAClose, 0.5 );   And since YEsterdayHAClose is Ref( HAClose, -1 ) we can write:   HaOpen = AMA( Ref( HaClose, -1 ), 0.5 );   Quod erat demonstrandum. Best regards, Tomasz Janeczko amibroker.com Hi Tomasz, Thanks for a reply, woodie from cci club uses e-signal formula quite well and we both had IB data with different results using Heikin Ashi today. >From what i see HaOpen calculated in e-signal uses (open+close)/2 previous bar and afl formula does it with close only/2??? I am not afl programmer, and i don't doubt that afl language is shorter... but could there be still difference in results cause of HaOpen calculations in both? tia, Ben 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 Investment management software Real estate investment software Investment property software Software support Real estate investment analysis software Investment software 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.