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Hi Tomasz,
Wednesday, May 28, 2003, 5:33:16 PM, you wrote:
TJ> It is in fact perfectly predictable :-)
Ah so nan desu ka?
TJ> If you go to File->Database Settings : Configure
TJ> there is a "Intraday auto-refresh" box.
TJ> If you CHECK this all your quotes will be
TJ> immediatelly and automatically refreshed
TJ> so AB display will show your 'current' state of MS database.
Yes, I have seen this tick box, and I do not have it checked.
Therefor, I would expect quotes NOT to be refreshed immediately.
What still seems unpredictable to me is whether I will see a chart
that includes new dates with zeros for placeholders, or whether I
will see a chart without the new dates. As I scroll down my symbol
list, I get a mix of both when the condition of the database is
exactly the same for all. Please explain this so I can understand
it, or so that I can control the behavior to match what I would like
to do.
TJ> If you UNCHECK this AmiBroker does not automatically
TJ> refresh charts non-stop.
It's not a matter of unchecking it. It is unchecked by default, and
I leave it that way.
TJ> Once you display given symbol AB stores its data in a cache
TJ> and does not requery until cache is filled up (with other stocks
TJ> data). Of course at any time you can press F5 to force refresh.
Maybe I'm just dense, but none of this explains to me why some stocks
display refreshed data, and some do not. I am not refreshing at this
point. But something in AB is, but it is not doing it universally. I
cannot understand this.
TJ> There is no option "not to read the last bar" however.
I understand that, of course.
Yuki
TJ> Best regards,
TJ> Tomasz Janeczko
TJ> amibroker.com
TJ> ----- Original Message -----
TJ> From: "Yuki Taga" <yukitaga@xxxxxxxxxxxxx>
TJ> To: <amibroker@xxxxxxxxxxxxxxx>
TJ> Sent: Wednesday, May 28, 2003 2:58 AM
TJ> Subject: [amibroker] TJ - premature refresh (unpredictable) or bad technique?
>> I have a small database of stocks that I monitor intraday, maybe
>> about 20 of them, including indices. I do this by hand because I
>> have no intraday provider. The database is via the MS plugin, and
>> works just fine.
>>
>> My standard technique is to open AB before the market opens, and
>> leave it running all day. Naturally, this gives me yesterday's
>> closing data at first, which is what I want at first.
>>
>> I make my first database update about 35 minutes after the open.
>>
>> Here is the problem . . .
>>
>> The first thing I do is setup for the new dates about 15 or 20
>> minutes after the open. I do this by opening the MS Downloader and
>> running a program (Automate) that plugs the new dates in for me. This
>> sets up the database as having today's date, but all zeros for price
>> and data values.
>>
>> At this point AB, which is already running and connected to a
>> database loaded with yesterday's values, should still be using
>> yesterday's price information. This is the behavior I would like, as
>> I often take a last look at yesterday's charts before the 35 minute
>> mark, at which time I do the first database update.
>>
>> However . . . what I see as I move from stock to stock at this time
>> (after entering new dates but before entering new price and volume
>> data) varies. Some stocks are still using yesterday's data (good) at
>> this point, but some stocks have picked up the new date input
>> (although I have not refreshed the data), and so they are using zeros
>> for all the values (bad).
>>
>> It should be all or nothing, in my mind. Either AB should
>> immediately be picking up on ALL new data (in which case my charts
>> would be useless at that point, since the data would all be zeros) or
>> AB should be picking up on NONE of the new data (in which case my
>> charts would all still reflect yesterday's close) until AB was
>> refreshed.
>>
>> But that's not happening. What is happening is an apparently random
>> refresh of some stocks, but not of others. I cannot account for this
>> in any way. Is there something that I'm missing?
>>
>> This is only a problem for maybe 30 minutes at most. Once I enter
>> the first round of data, and refresh AB with F-12, a hotkey I
>> assigned for this purpose, all is fine of course, and AB uses the new
>> data. But, I like to setup the new dates early, and relax. During
>> that time I have this unpredictable behavior. I'd like to be able to
>> control this if I can.
>>
>> Yuki ^_^
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