Pete, I am based in Aussie and use eS, who use UniversalTime.
So, for the US, I am either 14 hours or 15 hours ahead, depending in whether the US is in daylight saving mode or not. Here is what I do (hope it helps you): - eS 1 min database - I use the SPY and show volume, with session markers, to make sure I am aligned to time correctly (I use the markers as a reminder because I am subject to local daylight saving, Euro daylight saving and US daylight saving so to make sure I don't caught by a timeshift I use the visual checks). The volume indacates the open and the close and the markers are set to align with that. http://zboard.wordpress.com/2009/02/28/intraday-session-markers/ - my AB database settings Filtering: - show 24 hours trading (no filtering) Trading hours (local time) Start 2330 0600 End 0600 2330 Daily time-compression uses: Day/Night session times as defined above Per-database settings Time shift - 14 hours I don't set anything else on that page - so it is 2330 my time when the US opens for a 6.5 hour session - I subtract 14 hours to align my time (2330) to US time (0930) - in preferences I set Intraday >> Timestamp >> first tick in bar I don't know if this helps you ... it must be a start. I used these settings to get the inDaily Low and High value, for this post, and they worked fine: (see Scan code attached). http://zboard.wordpress.com/2009/03/02/342/ --- In amibroker@yahoogroups.com, "Pete" <dryhe...@...> wrote: > > There is a topic in the help files titled "Database Settings". There is a > section where it explains how to use the trading hours to define precisely > how time-compression works. I would like to know how I can set the Day/Night > session start and end times such that the time compression will only take the > O,H,L,C from between the market open at 9:30 am eastern to the market close > at 4:00 pm eastern. > > I have spent hours trying to adjust these values and then wright a simple > code which accurately calculates daily moving averages using time compression > in a intra-day time frame. No matter what I try I am always left with > assigning the values of O,H,L,C using the TimeNum() >= 093000 and TimeNum() > <= 160000 statements. > > The goal is the able to use a simple code: > Timeframeset(indaily); > DlyH = H; > DlyL = L; > DlyMA = MA(H-L,10); > Timeframerestore(indaily); > Plot(Timeframeexpand(DlyMA,indaily), "Dly H-L", colorRed, StyleLine); > > Thanks. > > Pete :-) >
