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Re: [amibroker] Where can I select "remove price spikes"



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Hello,
 
1. They are developing a bad tick filter at IQFeed now. From 
what I have heard it should be ready in 3 months.
There will be a built-in spike removal tool in AB 
sooner.
 
2. No time estimate right now, but please note that tick mode 
is used only for tick, 5-sec and 15-sec intervals
only. Data for minute intervals are retrieved already 
time-compressed from the IQFeed server and then
you have no access to tick data. Switching to historical tick 
server is not an option in that case because instead of 120 days
bacfill you will get only few and *much* slower.
 
Best regards,Tomasz Janeczkoamibroker.com
<BLOCKQUOTE 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  Bob Jagow 
  
  To: <A title=amibroker@xxxxxxxxxxxxxxx 
  href="">amibroker@xxxxxxxxxxxxxxx 
  Sent: Friday, July 11, 2003 5:51 AM
  Subject: RE: [amibroker] Where can I 
  select "remove price spikes"
  
  <FONT face=Arial color=#0000ff 
  size=2>Where does that say about IQFeed, Tomasz?
  When 
  can we expect a tick-based DLL?
  <FONT face=Arial color=#0000ff 
  size=2> 
  <FONT face=Arial color=#0000ff 
  size=2>Bob
  <FONT face=Arial color=#0000ff 
  size=2> 
  <FONT face=Arial color=#0000ff 
  size=2> 
  <FONT face=Arial color=#0000ff 
  size=2> 
  
    <FONT face=Tahoma 
    size=2>-----Original Message-----From: Tomasz Janeczko 
    [mailto:amibroker@xxxxxx]Sent: Wednesday, July 09, 2003 7:46 
    AMTo: <A 
    href="">amibroker@xxxxxxxxxxxxxxxSubject: 
    Re: [amibroker] Where can I select "remove price 
spikes"
    Jayson,
     
    No, I am saying that streaming data can contain bad ticks 
    in any RT vendor.
    But... some RT data vendors correct bad ticks later 
    and corrections appear in their historical data servers.
    So if you click 'fixup history', AmiBroker backfills given 
    symbol again and corrections are retrieved.
     
    Other RT data vendors do not correct bad ticks at all and 
    they are all present in their historical servers.
    In this case backfilling again would not help because 
    historical server still consists bad ticks.
    The only option is to post-process data, however this 
    process can be done correctly only on TICK historical data.
    Applied on 1-minute data is far from being 
    accurate.
     
    Best regards,Tomasz Janeczkoamibroker.com
    <BLOCKQUOTE 
    >
      ----- Original Message ----- 
      <DIV 
      >From: 
      <A title=jcasavant@xxxxxxxxxxx 
      href="">Jayson 
      To: <A 
      title=amibroker@xxxxxxxxxxxxxxx 
      href="">amibroker@xxxxxxxxxxxxxxx 
      
      Sent: Wednesday, July 09, 2003 3:13 
      PM
      Subject: RE: [amibroker] Where can I 
      select "remove price spikes"
      
      <SPAN 
      class=395510813-09072003>Tomasz,
      <SPAN 
      class=395510813-09072003>During the day when a bad tick goes through I 
      find that using fix up can correct the error after less than one 5 minute 
      bar....... are you saying that if I am patient the tick will fix itself or 
      are you speaking to EOD data?
       
      Regards, 
      Jayson 
      <FONT face=Tahoma 
      size=2>-----Original Message-----From: Tomasz Janeczko 
      [mailto:amibroker@xxxxxx]Sent: Wednesday, July 09, 2003 3:21 
      AMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re: 
      [amibroker] Where can I select "remove price spikes"
      Jayson,
       
      eSignal FIXES bad ticks on historical servers that's why 
      it works for eSignal.
       
      Best regards,Tomasz Janeczkoamibroker.com
      <BLOCKQUOTE 
      >
        ----- Original Message ----- 
        <DIV 
        >From: 
        <A title=jcasavant@xxxxxxxxxxx 
        href="">Jayson 
        To: <A 
        title=amibroker@xxxxxxxxxxxxxxx 
        href="">amibroker@xxxxxxxxxxxxxxx 
        
        Sent: Wednesday, July 09, 2003 6:34 
        AM
        Subject: RE: [amibroker] Where can 
        I select "remove price spikes"
        
        <SPAN 
        class=426363204-09072003>Thomas,
        <SPAN 
        class=426363204-09072003>FWIW I find very few such spikes with Esignal 
        and the fix up works well most of the time for the occasional 
        spike..
         
        Regards, 
        Jayson 
        <FONT face=Tahoma 
        size=2>-----Original Message-----From: Thomas Zmuck 
        [mailto:thomas.zm@xxxxxx]Sent: Tuesday, July 08, 2003 6:29 
        PMTo: <A 
        href="">amibroker@xxxxxxxxxxxxxxxSubject: 
        Re: [amibroker] Where can i select "remove price 
        spikes"Jayson,yes, principle it would 
        be a way, but not in my case.Almost every ticker has spikes and a 
        lot of them very extreme.I have started today with my iqfeed 
        trial but at the moment it looks notgood.The other question 
        is naturally what is a failure quote and what is areal 
        quote.Some price spikes are very large and some not.Maybe 
        the EOD - solution  is the better way :-)-- Thomas 
        Zmuck <thomas.zm@xxxxxx><A 
        href="">http://www.tradingbasis.com 
        On Tue, 8 Jul 2003 15:14:33 -0400"Jayson" 
        <jcasavant@xxxxxxxxxxx> wrote:> how about symbol/quote 
        editor??> > Regards,> Jayson > -----Original 
        Message-----> From: Thomas Zmuck 
        [mailto:thomas.zm@xxxxxx]> Sent: Tuesday, July 08, 2003 3:10 
        PM> To: amibroker@xxxxxxxxxxxxxxx> Subject: Re: 
        [amibroker] Where can i select "remove price spikes"> > 
        > Hi Jayson,> > yes, i know that but on some 
        tickers there are still price spikes and i> remember that there 
        was such an option.> > > On Tue, 8 Jul 2003 
        15:06:46 -0400> "Jayson" <jcasavant@xxxxxxxxxxx> 
        wrote:> > > Thomas,> > RT click the plug in 
        indicator (bottom RT of screen) then choose "Fix up History for 
        symbol".....> > > > Regards,> > Jayson 
        > > -----Original Message-----> > From: Thomas Zmuck 
        [mailto:thomas.zm@xxxxxx]> > Sent: Tuesday, July 08, 2003 2:49 
        PM> > To: Amibroker US - Group> > Subject: 
        [amibroker] Where can i select "remove price spikes"> > 
        > > > > Hello,> > > > i can't 
        find the option to undisplay price-spikes in intraday charts.> 
        > Is this no more available ?> > > > Can someone 
        tell it me please.> > > > Thank you !> > 
        > > -- > > Thomas Zmuck 
        <thomas.zm@xxxxxx>> > <A 
        href="">http://www.tradingbasis.com 
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