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GFT Data Questions

  • #1
  • First Post: May 3, 2007 9:41am May 3, 2007 9:41am
I have been exporting GFT daily data to a SuperCharts application for a few months.

I noticed some time ago, that the data has some changes from day to day.
The changes vary, though are usually of the close.
They can be only for a pip or two , but in many instances are for considerably more.
To see the difference in price you must have an independent record of the data on a given day then compare it to the data on the GFT platform, a day later.

I have asked Tech Support for an explanation and have worked with them continuously and while they are most solicitous, there has been no resolution.

It occurred to me that I am pointing out this changing data from my viewpoint of exporting it to another application.
But it obviously affects the charts put out by GFT and used by its clients with their analysis techniques, the same way.

How many of you GFT clients are aware of this ?

Perhaps it's just a problem associated with my set-up, which is what the techs intimate.
Any feedback would be appreciated.

Mike M.
  • #2
  • May 3, 2007 7:25pm May 3, 2007 7:25pm
Quoting mmont
How many of you GFT clients are aware of this ?
Mike M.

Not just GFT, I have noticed this across a couple of platforms that i have had experience with. I have put it down to the fact we are in the retail forex business where these things do happen. All it has made me change is my confidence in back testing.

Saying that, there is very professional charting software packages available. The ones where they don't offer trading but just charting. They usually also expect a monthly subscription fee, but at least you know what you're getting is consistent in past history and live.
  • #3
  • May 4, 2007 12:04am May 4, 2007 12:04am
All it has made me change is my confidence in back testing.

Saying that, there is very professional charting software packages available. The ones where they don't offer trading but just charting. They usually also expect a monthly subscription fee, but at least you know what you're getting is consistent in past history and live.

It's got nothing to do with back testing.
After 1 day the data no longer changes.
It's about entering a trade with a false signal

As far as getting prices from another source, that can be an even bigger problem since no 2 venues provide the same numbers in FX.
At least not that I've seen.

There's no excuse here for this type of thing to be happening.
I believe GFT is just as concerned and is working on figuring this out.
I just hope it's sooner rather then later.
  • #4
  • May 4, 2007 3:30am May 4, 2007 3:30am
Quoting mmont
It's got nothing to do with back testing.
After 1 day the data no longer changes.
It's about entering a trade with a false signal
It is for me, because i'll get a signal live to trade and then 2 days later when i go back to review the trade there's no signal there. So how many other times has this happened is my question? Hence it throws out the back testing.

Quoting mmont
As far as getting prices from another source, that can be an even bigger problem since no 2 venues provide the same numbers in FX.
At least not that I've seen.
I agree, but the numbers you get from these paid data feeds are a lot closer to market, hence systems can be tested with more accurate data.


Quoting mmont
There's no excuse here for this type of thing to be happening.
I believe GFT is just as concerned and is working on figuring this out.
I just hope it's sooner rather then later.
Me three.
  • #5
  • May 7, 2007 9:03pm May 7, 2007 9:03pm
Why would a broker have 2 sets of historical data? Are you sure you are asking the right questions when calling there support line?
  • #6
  • May 8, 2007 8:08am May 8, 2007 8:08am
Quoting fxprofessional
Why would a broker have 2 sets of historical data? Are you sure you are asking the right questions when calling there support line?
Are you sure you're reading the post right?
I think not.
There aren't 2 sets of data , there's only one.
Unfortunatly it changes as noted in the post.
Why???
I don't know and neither does GFT SS.
At least not at the moment.
But they are still working on it and hopefully it will be resolved.

If there are any GFT customers out there I wish you'd check your data stream, particularly EOD.

Thanks All.
  • #7
  • May 29, 2007 9:50pm May 29, 2007 9:50pm
I used GFT. Mine even worst. i found that my 4 hr chart will have a bar lost. This bar could be 1-5 bar from actual.
So my chart become distorted. i asked my broker. She say my time fram wrong. rubbish. $%#@^@
  • #8
  • Jun 4, 2007 7:32am Jun 4, 2007 7:32am
i have only ever found it a problem on daily charts.
click on the open book icon at the top which is "build historical data" and choose your start and end dates and it will download the data again, it should get it all up to date.
  • #9
  • Last Post: Jun 4, 2007 7:36am Jun 4, 2007 7:36am
Quoting Sociophaticus
To anyone who has problems with lost data in higher timeframes:
You have to press F5 (refresh charts) on every chart everytime the application is started up AND/OR every time you load a new workspace that has charts on it. This solved the problem for me. I do that every morning (on 28 charts) since I discoverd that I would have false signals if I didn't do the refresh.
This problem is even visible on daily charts. I think it has something to do with the collected tick data. The problem itself is definetely on YOUR end, so its avoidable.
Did all that and much more, still to this day, get EOD data changes within 24 hrs or so of the close.
It appears the changes have become less frequent but none the less they occur.

To see whats happening,you need to export the data after the close and then just before you export the next days data compare the previous high, low and close in the GFT platform with your record copy, you will see numerous changes especialy if your tracking 28 pairs.

I have also noticed that the open price will change over the course of the day. This is not readily desernable unless you make a record of the open with-in a few hours of it and then compare it to EOD data.

As I have previously said, the techs want and try to help but to no avail as yet.

For the mini I'm running now I just live with it.
But when I go to a full account I don't see how I can stay with GFT.
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