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I didn't see Tomasz's post of half an hour ago so that makes it even
more interesting now.
It's probably still do-able by round about methods until the direct
route Tomasz talks about comes home along the outside rail.
Brian.
--- In amibroker@xxxxxxxxxxxxxxx, "brian.z123" <brian.z123@xxx>
wrote:
>
> You're welcome.
>
> Sometimes in trading it is actually an advantage not to know too
> much, in advance, about mathematics or computers.
> If you don't you really have to make absolutely sure you
understand
> each step and brutally reduce everything down to it's most simple
> explanation.
> It's amazing the things you find out when you do that.
> It takes a bit longer but in the end I think technoNOTS, like me,
> can understand it as well as anybody.
>
> I'm assuming you mean you want to take the Yahoo fdata you
download
> into AB and save it somewhere to make a histo.
>
> I haven't walked all the way through that one as I am going a
> slightly different route.
> Still not to say I won't want to do that for some reason at some
> time so I am interested to find out for myself.
>
> Here is one place we can start thinking about a possible solution
to
> the problem.
>
> To export the fdata use explorer.
> Make a .afl explorer template for 'exporting Yahoofdata' with
>
> ProfitMargin = GetFnData("ProfitMargin");
> AddColumn (ProfitMargin, "ProfitMargin",1.2);
>
> type statements for every available fdata field or every field
that
> you want (as you did in the example explorer code you posted last
> week).
> Play around with the filter/filterNOT to get the symbol list you
> want (all symbols?)
> Run the exploration and use the explorer export to send the fdata
to
> a .CSV file.
> Save as Don's funtastic fundas.
> The outcome is a .CSV for the day with all symbols in one file.
> The symbols are in rows and the column headings = "ProfitMargin"
etc.
> If you repeat, say each day etc, you will end up with a series of
> daily files e.g July222006, July232006 containing all symbols
> (obviously).
>
> That is where things start to get a little more interesting.
> How to go from there to an SQL database is the next piece of the
> puzzle.
> That's the bit I can't do so far
> I was just about to get the SQL download and have a read.
>
> If you get stuck from there come back with another question.
> I might be hanging around, have another go and get lucky or some
> kind angel may be hovering above us in Ami heaven.
>
> If you crack the D'AMI CODE let me know how to do it.
>
> BrianB.
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Don Lindberg" <dlindber@>
> wrote:
> >
> > Brian,
> >
> > Thanks for the reply. I now have a much clearer picture of how
the
> data is
> > kept in AB. Now I have to figure out how to create a SQL
database
> with the
> > extra" data I want to build history on |;>).
> >
> > Thanks Again,
> >
> > Don
> >
> > -------Original Message-------
> >
> > From: brian.z123
> > Date: 07/21/06 16:08:47
> > To: amibroker@xxxxxxxxxxxxxxx
> > Subject: [amibroker] Re: In the Ongoing Discussion of Historical
> Fundamental
> > Data
> >
> > Hello Don,
> >
> > I still have a lot to learn about AB, so, with some
qualification
> the
> > answer is no.
> >
> > Ami does not work like that.
> > It can only keep six fields or columns of data (OHLCVOI), if we
> > compare it a spreadsheet or a database table for learning
purposes.
> > The other information like the company name, category and the new
> > fundamental data etc is only stored once.
> > If you are used to spreadsheets just consider that the Yahoo
data
> is
> > stored in columns with only one row, while the OHLCVOI data can
be
> > stored in an unlimited number of rows (technically speaking this
in
> > not correct as Ami uses arrays not 'columns' but that is how I
> think
> > about it for ease of learning).
> > When you update your fdata with a new download from Yahoo the old
> > numbers will be replaced (overwritten) by the new numbers so
there
> is
> > No way to refer back to previous, say EPS.
> >
> > There was a way around this by importing with the ASCII wizard
and
> > using an artificial ticker to store the historical data, but
that
> is a
> > little more difficult to do.
> > To manage that with the new Yahoo fdata you would first need to
> export
> > the data from AB on a regular basis and save each line of export
by
> > appending it to the previous line(s)in a separate file outside
of
> AB
> > e.g. a .CSV file.
> > From there you can import it back into AB as an artificial
ticker.
> > That is a separate subject if you want to go into it.
> >
> > That is not so relevant as of today as Tomasz just posted a
notice
> to
> > say that the new 'database' plug in has been released.
> > It is designed to allow users to read databases containing data
> that
> > is extra to the OHLCVOI fields that comprise the normal AB
> databases.
> > I haven't downloaded and read the instructions as yet but I
expect
> it
> > to be easy to use.
> >
> > In the long run, that would be the recommended way to go for
> > fundamentalists.
> > It will definitely be much easier to use historical fundamental
> data.
> > That leaves us with the problem now of finding some databases to
> > practise on.
> > For actual trading use databases that have been kept for us by
> others
> > are the best bet but some users will export from AB/Yhaoo data
and
> > compile historcal records for themselves.
> >
> > For commercial sources refer to mmy previous historical
fundamental
> > data provider lists.
> >
> > One of the sources in that list is reported to have free data
> (HOOVER)
> > which would be good for training use or people who prefer that.
> > I will look more closely at the prospects on the list later.
> > I am not optimistic about the chance of finding free histo fdata
> (the
> > cost of compiling and maintaining such databases is too high for
> > owners to give a lot of it away).
> >
> > Some Amifriends might have histo database files they will share
for
> > training use.
> >
> > I am sure there will be more forum help forthcoming on the new
> plugin
> > and how to acquire and use histo fundamental databases.
> >
> > BrianB.
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Don Lindberg" <dlindber@>
wrote:
> > >
> > > I have a question about setup of AmiBroker regarding the
> Fundamental
> > > Data we can now dowload from Yahoo. While I realize that
Yahoo
> does
> > > not keep this info in a Historical database, does AmiBroker?
> What I
> > > mean is this. If I download the fundamental data, say once a
> week,
> > am
> > > I overtime building a history of this data? And if I am, how
do I
> > > compare today with last week?
> > >
> > > Don Lindberg
> > >
> >
> >
> >
> >
> >
> >
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> >
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> >
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> >
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