Use 0 not null, change the atr period to 3. Null seems to have a value of - 4 billion, at least that is what I saw when I put the cursor on the null part of the chart.
First3=IIF(hour()<10, atr(3),0); // this array holds the atr of the first three hours Restofday=IIF(hour()>=10,atr(3),0); // this array holds the atr of rest of the hours atravg3=ma(First3,30); //calculates the 30 period average of the atr obtained during the first three hours atrmovaveragerR=ma(restofday,30); plot(First3, "First3", colorblue); plot(atravg3, "atravg3", colorred); plot(Restofday, "Restofday", colorgreen); plot(atrmovaveragerR, "atrmovaveragerR", colorblack); Barry --- In [email protected], "Ara Kaloustian" <[EMAIL PROTECTED]> wrote: > > Value = iif(Timenum() <time criteria,MA(x),MA(y)); > > ----- Original Message ----- > From: "pmxgs" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Thursday, July 24, 2008 9:50 AM > Subject: [amibroker] Help with AFL, calculating two different ATR > > > > Hi, > > > > I'm trying to build two indicators which calculate the 30 period MA > > of the (1)ATR of the first 3 hours of the trading day and then the > > (2)ATR of the rest of the hours of the trading day. > > I'm using hourly bars. > > > > > > Can I do this without loops? > > > > I was thinking in using something like (assuming market opens at 7): > > > > > > First3=IIF(hour()<10, atr(1),null); // this array holds the atr of > > the first three hours > > Restofday=IIF(hour()>=10,atr(1),null); // this array holds the atr > > of rest of the hours > > > > atravg3=ma(firsttwoh,30); //calculates the 30 period average of the > > atr obtained during the first three hours > > atrmovaveragerR=ma(restofday,30); > > > > The problem with this approach is that the first3 array is filled > > with numbers (atr) when I'm at the first three hours of the trading > > day, and nulls after that. > > Then the moving average will be calculated on both the numbers and > > the nulls. > > Is there any way to change this, so that the average uses only the > > number, and discards the nulls. > > > > thanks very much > > > > > > > > ------------------------------------ > > > > 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 NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > > http://www.amibroker.com/devlog/ > > > > For other support material please check also: > > http://www.amibroker.com/support.html > > Yahoo! Groups Links > > > > > > >
