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Ron,
Sorry for the late answer - noticed your question but my attention
went elsewhere.
I tried Yahoo RT a while ago - I think I posted under Yahoo RT.
Yes, you can use it with AB.
It is eminently suitable for your use i.e. to finesse entries and
exits for longer term trading provided you are only interested in the
major stocks (from memory RT only covers the S&P500 or something like
it).
> I assume that I should set up a separate yahoo database for the
>Yahoo realtime data.
Yes, definitely,
Minimum granularity is 1 minute for GUI users .... once you have
enough 1 minute bars then you can change to viewing higher
timeframes.... 1 minute is only an approx 'snapshot' so a 1 minute
plot will be 'smoothed' compared to tick data but once you change to,
day 5 or 10 min view the slight error will not impact your ability to
pick and entry for weekly or longer trades (the 'error' will be a
very small % of 'real' prices except for the very rare extreme price
moves).
>If my Yahoo realtime Database has 5000 tickers in it, will this NEW
>YAHOO REALTIME DATABASE become VERY LARGE quickly?
I don't think Yahoo RT supports 5000 tickers but if it did it
shouldn't be a problem for you ... everyday people are using RT
databases with more frequent datapoints than one minute and histories
going back 6 months or more.... size is not an issue ;-)
... hard drive space is the least of our worries these days.
When you set up your 1 min RT database you can see the memory
required for X bars in tne AB database settings window.... this will
approx your memory useage .... I can't remember if Yahoo RT has OHLC
or just on value ... if only one value then you have one datapoint
compared to 4 or more for my eSignal RT.
Note that 1 min Yahoo RT will only plot as a single value (no OHLC
bar until you change to a higher timeframe)
For your useage a few days of history is probably all you need so you
can dump your database every so often and start again (typically I
only need,say, day 10 days RT history to trade on and only use more
if backtesting)
> Also, can I tell Yahoo to send me this realtime data every 5
>minutes, 10 minutes, 15 minutes, and so on?
>
As a computer layperson I couldn't get to the bottom of it 100% and
since the info wasn't easy to come by I settled on 1 minute as the
minimum available ... this is not a restriction from Yahoo's end
AFAIK but is limited by AmiQuotes 1 minute minimum refresh (perhaps
programmers can work around this limit).....
... have a look at my previous post for the AQ -> AB method.
brian_z
--- In amibroker@xxxxxxxxxxxxxxx, Ronald Davis <xokie7@xxx> wrote:
>
>
> I am using Amibroker version 5.00.1 dated Nov 12, 2007.
>
> I make all of my buy and sell decisions using setups that appear
in my charts from my Yahoo Free EOD data.
>
> I now I want to start using the paid subscription Yahoo realtime
data in order to fine tune my entrys into the YAHOO EOD DATA buy and
sell
decisions.>> http://help.yahoo.com/l/us/yahoo/finance/quotes/quote-
63.html
>
> When I click on AMIBROKER>VIEW>REALTIME, I only see two folders,
Local Layouts, and Global Layouts. I want to be sure that my
Version 5.00.1 Amibroker really will work with this Subscription
Yahoo realtime data.
>
> I assume that I should set up a separate yahoo database for the
Yahoo realtime data. If my Yahoo realtime Database has 5000 tickers
in it, will this NEW YAHOO REALTIME DATABASE become VERY LARGE
quickly?
>
> Also, can I tell Yahoo to send me this realtime data every 5
minutes, 10 minutes, 15 minutes, and so on?
>
> I have limited computer use skills, so I will appreciate any
detailed answers you will be able to offer. Thanks Ron D
>
>
>
>
>
>
>
>
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