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<SPAN
class=353153716-03072003>Phil,
If you
collect 1 min data when you choose to view a 5 minute chart AB does the math and
shows you what happened in thae 5 minute time frame. your 20 period sma is
calculated on that 5 min bar chart based on 20 5 min bars. If you now switch
your periodicity to a 15 min chart the base time of collected data is still 1
min but AB plots 15 minute bars. Your 20 period sma of this chart is calculated
on 20 15 min bars.....The same concept applies to composites. When you run the
scan an artificial ticker is created and you can use it just like any other
ticker.
Regards,
Jayson
<FONT face=Tahoma
size=2>-----Original Message-----From: angleseven1
[mailto:phil.blanchard@xxxxxxxxxxx]Sent: Thursday, July 03, 2003
12:22 PMTo: amibroker@xxxxxxxxxxxxxxxSubject: [amibroker]
Re: Displaying composites on intraday charts, without
scanningJayson,In the same way that I might
want to plot a 20-period SMA on a 5-min chart, and a 20-period SMA on a
15-min chart, I want to plot eg a MACDBULL composite on a 5-min chart, and a
MACDBULL composite on a 15-min chart. And just as the 20-period SMA on
the 5-min chart is calculated from 5-min data, and the 20-period SMA on the
15-min chart is calculated from 15-min data, so the MACDBULL on the 5-min
chart would be calculated from 5-min data, and the MACDBULL on the 15-min
chart would be calculated from 15-min data.So as I see it I would need a
scan with periodicity set to 5-min to calculate the MACDBULL for a 5-min
chart, and a scan with periodicity set to 15-min to calculate the MACDBULL
for a 15-min chart.Unless there's some way of setting the periodicity within
the scan itself, or compressing bars made up from 1-min data.Hope that
makes sense!ThanksPhil--- In amibroker@xxxxxxxxxxxxxxx,
"Jayson" <jcasavant@xxxx> wrote:> Phil,> perhaps I am
confused as to what you are trying to do. For example you could>
build a composite in 1 min data then plot that composite in 1,5,15,60,78
min> views. Just the same as you could switch a 1 min interday chart of
CSCO to> 5,15,16,78 or daily data. This assumes you have sufficient
data to view the> various time frames.....> >
Regards,> Jayson> -----Original Message-----> From:
angleseven1 [mailto:phil.blanchard@xxxx]> Sent: Thursday, July 03, 2003
11:54 AM> To: amibroker@xxxxxxxxxxxxxxx> Subject: [amibroker] Re:
Displaying composites on intraday charts, without> scanning>
> > Tomasz, Jayson,> > What about timeframe
settings? I can see that I can have several> addtocomposite() calls in
one scan, but it looks like to run a 78-min> composite the
periodicity would need to be set to 78 mins in the scan> settings,
and to run a 13-min composite it would need to be set to 13> mins,
and so on. That looks like several scans to me. Is that right> or have I
missed something?> > Thanks> Phil> > --- In
amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxxx>>
wrote:> > Hello,> >> > You can have unlimited
number of AddToComposite() calls in single> formula.> > This
means you can run ONE formula (one scan) to update all>
composites.> > This won't generate any trouble. Also you can use 'scan
every'> feature in AA> > so scans are periodically and
automatically run and you can focus> > on analysis.>
>> > Best regards,> > Tomasz Janeczko> >
amibroker.com> > ----- Original Message -----> > From:
"angleseven1" <phil.blanchard@xxxx>> > To:
<amibroker@xxxxxxxxxxxxxxx>> > Sent: Thursday, July 03, 2003
5:17 PM> > Subject: [amibroker] Re: Displaying composites on intraday
charts,> without scanning> >> >> > >
Tomasz, Jayson,> > >> > > Thanks for your
replies.> > >> > > Assuming I use scans, presumably
this means I need to run a> separate> > > instance of
AmiBroker for each scan.> > > Are there likely to be any problems
running several scans at> once?> > > What about memory
usage?> > > The reason I ask is I've tried something similar with
NeoTicker> and> > > its RAM usage went sky high causing the
program to hang (I've got> 1Gb> > > of RAM on my
machine). Same thing if 2 NeoTicker scans happened> to> > >
run at the same time.> > >> > > Thanks> >
> Phil> > >> > > --- In amibroker@xxxxxxxxxxxxxxx,
"Tomasz Janeczko"> <amibroker@xxxx>> > >
wrote:> > > > Hello,> > > >> > >
> One thing more: if you have 50 symbol eSignal subscription you>
will> > > run into trouble> > > > trying to run
AddToComposite on 100 nasdaq symbols.> > > >> > >
> Best regards,> > > > Tomasz Janeczko> > > >
amibroker.com> > > > ----- Original Message -----> >
> > From: "Tomasz Janeczko" <amibroker@xxxx>> > > >
To: <amibroker@xxxxxxxxxxxxxxx>> > > > Sent: Thursday,
July 03, 2003 4:42 PM> > > > Subject: Re: [amibroker] Displaying
composites on intraday> charts,> > > without
scanning> > > >> > > >> > > >
> Phil,> > > > >> > > > > > 1. Can
AmiBroker plot composites on intraday charts?> > > > > Yes of
course. There is no difference.> > > > >> > >
> > > 2. Can AmiBroker run the type of code shown above with>
intraday> > > data?> > > > > Yes it runs such
code provided that you have added ALL symbols> > > > >
that are referenced by the code via Symbol->New and they are>
all> > > backfilled.> > > > >> > >
> > > 3. Do any of the other methods mentioned in various posts>
> > > > > > CreateAverageForWatchList, looping through a
watchlist,> > > defining a> > > > > >
function, using the Abtool plug-in) work with intraday data?> >
> > > All these methods work with intraday data.> > > >
> However some methods may take longer than others.> > > >
> Therefore it is advised to use AddToComposite and AA scan> > >
> > instead of other methods because explicit looping through>
large> > > watch list> > > > > may be too
resouce hungry.> > > > >> > > > > Best
regards,> > > > > Tomasz Janeczko> > > > >
amibroker.com> > > > >> > > > >>
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