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Hello,
Yes I can confirm that IQFeed backfills now (actually more it is so since september 2006) are done in progressive way:
so you will see most recent data almost immediatelly and backfill
will subsequently fill past days.
And backfill speeds are much better since IQFeed API 4.0
Of course you need to use NEW IQFeed API and plugin
http://www.amibroker.com/iqfeed.html
As far as speed is considered:
on 2Mbps DSL located in Poland (so US customers should see *better* performance)
the measurements done using stop watch are as follows:
Setup: Base time interval = 1 minute,
I add a new symbol and wait until chart displays
IQFeed: first chunk of backfilled data displayed in 0.8 sec
37 days 1-minute data complete in 6.2 sec.
eSignal: first chunk of backfilled data displayed in 1.0 sec
37 days 1-minute data complete in 4.4 sec
So first chunk arrives quicker with IQFeed but longer backfills are
faster in eSignal. The difference is however hardly noticeable in practice
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "DTN IQFeed Datafeed Services" <iqfeed@xxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, May 22, 2007 8:11 PM
Subject: [amibroker] Re: esignal data feed vs iqfeed
> In our original interface (old style), the data was returned
> ascending. However, the newer interfaces, which Amibroker now uses
> (as far as I know), return the data descending, and returns the data
> 10 ticks/bars at a time to the client. Thus, you no longer have to
> wait until you receive all of the data in order to start seeing it
> appear on charts. I know Tomasz did a lot of work in the past few
> months on the IQFeed interface, and it is my understanding that it is
> much better than a year+ ago. Hopefully with the release of our new
> servers, things will be even better.
>
> --- In amibroker@xxxxxxxxxxxxxxx, "murthysuresh" <money@xxx> wrote:
>>
>> negative
>> 1. Thier back fills are definitely slower than esignal because of
> the
>> way they do thier fills. I read in one of thier forums that it
> loads
>> up in ascending date order and esignal does it in descending order
>> 2. i could never use the mixed mode so your intraday database has
>> only 8 monhts of data. the 200 dma is skewed because of that. I had
>> to have 2 databases, intraday and daily and keep flipping between
>> them
>> positive
>> 1. Excellant technical support. they actually work with you on
>> issues. But could not fix the first 2 ones because of strategic
>> problsms
>>
>> --- In amibroker@xxxxxxxxxxxxxxx, "Fred S. Esch" <fesch@> wrote:
>> >
>> > I have ESignal and was considering switching to IQFeed when my
>> annual
>> > ESignal subscription expires. Would you be so kind as to explain
>> what
>> > problems you encountered using IQFeed?
>> >
>> >
>> >
>> > With kind regards,
>> >
>> >
>> >
>> > Fred
>> >
>> >
>> >
>> > _____
>> >
>> > From: amibroker@xxxxxxxxxxxxxxx
> [mailto:amibroker@xxxxxxxxxxxxxxx]
>> On Behalf
>> > Of murthysuresh
>> > Sent: Thursday, May 17, 2007 3:30 PM
>> > To: amibroker@xxxxxxxxxxxxxxx
>> > Subject: [amibroker] esignal data feed vs iqfeed
>> >
>> >
>> >
>> > Hello
>> > I finally got the esignal data only package for 60 bucks 200
> symb.
>> this
>> > is definitely better value than iqfeed 500 symb for 50 bucks. for
>> the
>> > price of 10 bucks more, i can do all my scans and monitors so
>> quickly
>> > and seemlessly.
>> >
>>
>
>
>
>
> 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 NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
>
>
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 NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
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For other support material please check also:
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