Thanks all, As droskill mentioned .. .the starting point was different. for AB the array started from previous two days. for ta-lib I just gave the required amount of data.
Thanks Again to all. On Tue, Apr 27, 2010 at 12:34 AM, Tomasz Janeczko <[email protected]>wrote: > > > Hello, > > EMA in ta-lib are NOT initialized (the starting point is first data in > the series) > EMA in AFL are initialized the way they are in Tradestation and > Metastock, i.e. > the very first value (initial) for N-bar EMA is the value of SIMPLE > (arithmetic) moving average. > > To workaround this problem TA-LIB has "SetUnstablePeriod" function that > strips off given > number of bytes. > http://ta-lib.org/d_api/ta_setunstableperiod.html > > More properly TA-LIB should adjust their codes to initialize with SMA. > > If you want TA-lib equivalent you may use AFL's AMA with feedback factor > 2/(period+1) > AMA( array, 2 / (period+1) ) > > Best regards, > Tomasz Janeczko > amibroker.com > > > On 2010-04-26 20:44, droskill wrote: > > do you have the same starting point for the data? That, I believe, will > highly influence your results. > > > > --- In [email protected] <amibroker%40yahoogroups.com>, > "Prabu"<prabui...@...> wrote: > > > >> > >> How is ema calculated in AmiBroker? > >> Why the result is different from ta-lib's ema result? > >> > >> > > > > > > > > ------------------------------------ > > > > > **** IMPORTANT PLEASE READ **** > > This group is for the discussion between users only. > > This is *NOT* technical support channel. > > > > TO GET TECHNICAL SUPPORT send an e-mail directly to > > SUPPORT {at} amibroker.com > > > > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at > > http://www.amibroker.com/feedback/ > > (submissions sent via other channels won't be considered) > > > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > > http://www.amibroker.com/devlog/ > > > > Yahoo! Groups Links > > > > > > > > > > > > >
