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I have similar thoughts as I actually have 1 esignal and 1 IQ Feed
account (I need 2) and am trying to switch ultimately to just one.
I think you nailed the issues right on the head. I even uploaded/sent
them a note on their board about the backfill issue.
One question is the following:
Assuming that you are dealing w/ current realtime data, not backfill,
do you have a sense for which is faster and potentially more accurate
/ timely? I originally thought it would be esignal but my partner is
running the esignal data and it seems less precise then when I run the
IQ Feed data - and I actually assumed that the esignal realtime feed
would be better.
Any feedback on realtime streaming data?
--- In amibroker@xxxxxxxxxxxxxxx, "polomorabe" <paul.moore@xxx> wrote:
>
> At the start of the year, I posted a message to the board, asking for
> people's experiences with using DTN IQFeed:
> http://finance.groups.yahoo.com/group/amibroker/message/92663
>
> Several people replied, and the general concensus was that eSignal was
> faster and more reliable. One of the responses was from Jay at DTN,
> where he stated how the deficiences were being addressed, and that the
> quality of service would improve.
>
> I've been using their service for two months. Here is the summary of
> their service and how it compares with eSignal's.
>
> Customer Service: DTN's is much better. I initially had several email
> exchanges with respect to getting DDE working with Excel, and one of
> their customer representatives even wrote a macro to automate the
> whole update process.
>
> DDE/Excel: Thanks to DTN's helps with getting this working, updating
> prices in RT into Excel works much better than with eSignal.
>
> Symbols: For the yearly fee, the symbol limit is about 1000, versus
> 200 for the standard eSignal service. This also includes RT options,
> and, I believe, futures, both of which cost extra with eSignal.
>
> Price: With this higher symbol limit, the price is just over half that
> of eSignal. In theory, good value for money!
>
> Data Speed: Symbol updating is visibly slow, when more than about 2
> days of data have to be backfilled.
>
> Backfilling: Backfills for a newly-entered symbol can take about 20
> seconds, compared to about 2-3 seconds with eSignal. Worse, sometimes
> the backfill blocks, and the symbols has to be erased and reentered,
> or Amibroker has to be stopped and restarted. Further, only 80 days of
> intraday backfill are available, versus 90 days intraday plus a
> further 9 months EOD, from eSignal. This is the worst aspect of DTN's
> service.
>
> Support: DTN have been claiming since I joined that these issues were
> being sorted out, and they led me to believe that they would be solved
> in the next release of Amibroker, when that arrives.
>
> I recently sent the following email to Tomasz at AB:
>
> "I've been using DTN.IQ real-time data feed, and in general,
> it seems to work well.
>
> "I was previously using eSignal, and I find that prices using
> DTN.IQ data are updated much slower than with eSignal, but I
> understand from DTN that this problem should be solved with
> the next version of Amibroker. But another problem I've found
> is that sometimes, when running an exploration on the tickers
> in a watchlist, it simply hangs up when trying to backfill a
> stock ticker. The ticker on which it blocks seems to vary
> between exploration runs, even when the runs are separated by only
> a few minutes.
>
> "To fix the problem, I have to close and restart Amibroker,
> and the previously blocked backfill updates successfully, and
> either:
> - the exploration successfully completes, or
> - the backfill fails, either on a later ticker in the watchlist,
> or on an earlier ticker in the watchlist that had successfully
> backfilled during the previous run
>
> "Other things I've noticed:
> - There is only 80 days of backfill intraday data. With eSignal
> there was 90 days intraday data plus one year (I think) of
> EOD data. DTN told me that this problem should be fixed in
> the next Amibroker version"
>
> I received this reponse from Tomasz:
>
> "1. The slowness of IQFeed can not be "solved" by next version
> of AmiBroker. It must be solved by IQFEED. This is IQFEED which
> is slow, not AB. Notice that other sources (eSignal, IB) work
> faster.
>
> "2. All other problems you are having are because of problems
> in IQFeed Client software that is delivered by IQFeed. I told
> them about this hundreds of times. They always say that 'they
> are working on this'.
>
> "If you want stable and solid feed use Signal."
>
> I am using the most recent official versions of all software:
> - Amibroker v4.70.5
> - DTN.IQ data plugin v1.60
> - IQLink v4.1.1.1
>
> So, there you have it, DTN's frills are better, but eSignal provide a
> better data feed. I suppose it's a question of getting what you pay for.
>
> I hope this helps other people who may be thinking of switching over.
> Paul
>
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