What exactly does pad and align do??
It takes a reference signal of your
choosing, usually a widely used index such as $COMP that is unlikely to have
data holes.
Then, it compares the data for each
stock you have to this "benchmark" to decide if there is missing
data. If so, then the missing bar of data is replaced with the previous bar's
value. This is much better for indicators than having a ZERO value for that
bar, which is what you get if data is missing (not uncommon).
If you trade any foreign securities be
aware that they will have different market days than U.S. stocks so pick your
reference index accordingly.
Here is what the HELP file says about
"Pad & Align". PS: HELP really does HELP!
Pad and align to
reference symbol
When this
is turned on, all symbols' quotes are padded and aligned to reference symbol.
Note: by default this setting is OFF. Use responsibly. It may slow down
backtest/exploration/scan and introduce some slight changes to indicator values
when your data has holes and holes are filled with previous bar data. The
feature is intended to be used when your system uses general market timing
(generates global signals based on data and/or indicators calculated using
Foreign from 'reference' symbol) or when you are creating composites out of
unaligned data. Note: if reference symbol does not exist, data won't be padded.
-----Original Message-----
From: [email protected]
[mailto:[EMAIL PROTECTED] On Behalf
Of [EMAIL PROTECTED]
Sent: Sunday, October
01, 2006 08:59
To: [email protected]
Subject: Re: RE: [amibroker] Scan
and Settings
AAAAGGGHHHHHHHHH!!!!!!!!!!!!!
As usual,you come to my rescue.How in the world was I
or anyone supposed to know that????
To wrap it up,you cant set the dates in settings for
Scan and you cant use quote editor for QP3 data.
Which means I will have spikes in my
indicies,industries and sectors.....
Allan
----- Original Message -----
From: Steve Dugas
<[EMAIL PROTECTED]>Date: Saturday, September 30, 2006 9:51 pm
Subject: Re: RE: [amibroker] Scan and Settings
To: [email protected]
> Hi Allan - I don't believe that AB will allow you to make
> changes via Quote Editor if your DB was created with the QP
> plugin - I think data is retrieved exclusively from the QP
> database. You could confirm this with AB support just to be
> sure, but I think you would need to report the errors to QP,
> then you could retrieve the corrections along with new data.
>
> Steve
> ----- Original Message -----
> From: [EMAIL PROTECTED]
> To: [email protected]
> Sent: Saturday, September 30, 2006 8:31 PM
> Subject: Re: RE: [amibroker] Scan and Settings
>
>
> hey Joe,
> No need for the apology..I have tried everything else ,it was
> worth a shot...I think Pauls idea was probably the fix,though it
> should not have to be coded.Unfortunately.I got sidetracked on
> DataPurify and Quote Editor.I cant get quote editor to function
> and add missing quotations.As you probably know,there is no add
> button in Q.E,and you need to click on the editor anywhere but
> on NEW to add...Unfortunately,that doesnt work either...
>
> I am starting to think building industries and sectors is not
> meant to be:)
>
>
>
> Allan
>
> ----- Original Message -----
> From: Joe Landry
> Date: Saturday, September 30, 2006 8:11 pm
> Subject: Re: RE: [amibroker] Scan and Settings
> To: [email protected]
>
> > I apologize. I am misinformed and as consequence I
> misinformed
> > anyone who read my
> > previous note. I just tried building a watch list average
> with
> > a limited range price array as the current symbol and it
> > did NOT work as I expected. Back to the drawing board.
> >
> > JOE
> > ----- Original Message -----
> > From: Joe Landry
> > To: [email protected]
> > Sent: Friday, September 29, 2006 6:44 PM
> > Subject: Re: RE: [amibroker] Scan and Settings
> >
> >
> > IMHKnowledge.....The way to limit the number of bars in the
> > ATC is to choose a stock with a limited history
> > for your curent symbol in the selected stock window. AB then
> > runs and limits the calcs to the number of bars in that ticker.
> > There is a way to create synthetic tickers that have a
> > selected length. In fact using selected symbols with limited
> number > of bars does wonders to increase the speed of the
> > backtest/optimization, so I've been told... but I don't know
> how
> > to do it.
> >
> > In fact the most screw ups I've ever done in creating ATCs
> is
> > to have a ticker with a limited number of bars
> > as the current symbol.
> >
> > HTH
> > Joe
> > ----- Original Message -----
> > From: [EMAIL PROTECTED]
> > To: [email protected]
> > Sent: Friday, September 29, 2006 5:51 PM
> > Subject: Re: RE: [amibroker] Scan and Settings
> >
> >
> > Hi Terry,
> > No matter what I do,my composites are set to the full
> > history which is apx 10 years
> >
> > Allan
> >
> > ----- Original Message -----
> > From: Terry
> > Date: Friday, September 29, 2006 6:23 pm
> > Subject: RE: [amibroker] Scan and Settings
> > To: [email protected]
> >
> > > I do this all the time. I set/change the date range,
> > expecting
> > > it to
> > > auto-select, but it doesn't. You ALSO have to click the
> > button beside
> > > the date range.
> > > --
> > > Terry
> > >
> > > -----Original Message-----
> > > From: [email protected]
> > > [mailto:[EMAIL PROTECTED] On
> > > Behalf Of matrix10014
> > > Sent: Friday, September 29, 2006 15:37
> > > To: [email protected]
> > > Subject: [amibroker] Scan and Settings
> > >
> > > Hi,
> > > Whwn i run my ATC's in Scan and have my settings set for
> > 365
> > > days,for
> > > some odd reason the composite i am creating goes back 10
> > > years.What do
> > > i do to limit the composite to 365 days??
> > >
> > > Thanks,
> > >
> > > Allan
> > >
> > >
> > >
> > >
> > >
> > >
> > > 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
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
