Since its a data problem, you will need to manually look and modify the concerned bar (in lowest time frame that you have data in). Hence, if you are having 1 Minute Data, a single minute will be the cause which you have to see and delete / modify.
Cheers Prashanth ----- Original Message ----- From: ram vel To: [email protected] Sent: Saturday, December 05, 2009 21:25 PM Subject: Re: [amibroker] Trimming yahoo data bars from abnormally long to reasonable size-How can we ? [1 Attachment] [Attachment(s) from ram vel included below] please take a look at png in attachment to see odd sized bars in action. thanks rvlv --- On Sat, 12/5/09, rvlv <[email protected]> wrote: From: rvlv <[email protected]> Subject: [amibroker] Trimming yahoo data bars from abnormally long to reasonable size-How can we ? To: [email protected] Date: Saturday, December 5, 2009, 9:48 AM Hi afl experts and experienced coding specialists, Please few minutes to address this problem that most Amibroker uses face. summary people use Amiquote and download stockdata on intraday,daily timeframes into a separate database. Then they like to apply certain pattern recognition afl on this data. The formula does not give proper results. Reason? yahoo gives some times once in a while,an abnormal bar that is say 10 times linger than normal bars. Once these oddsized bars appear, the newbies are in confusion,pattern detection or following established simple trading rules becomes not anymore possible. There must be a simple solution to trim the oddsized abnormal bar using an automatic trimming afl program. My humble request to experts like Graham kavanagh(with whose educating afls we learntr to make our baby steps),Herman, who gives very useful hints that save lot of troubles,and many other generous people like Mike,droskill, reinsley etc,who are willing to help always, please give us a helping hand to deal with this problem. One can say HEY MAN, Yahoo makes this odd sized data bars and they are least bothered about quality. Why dont you buy some paid data? My answer is just think about guys who wish to spend for paid broker data once they cross the loosers hell zone(mostly they get losses and still struggling). My point is whatever yahoo gives, I manage by trimming data at my end. Please accept my gratitude in advance for your help. regards rvlv Attachment(s) from ram vel 1 of 1 Photo(s) odd sized data bars from yahoo.PNG
