TJ - could you describe how AB handles data from DTN-IQ? d
On Tue, Mar 17, 2009 at 11:42 AM, Tomasz Janeczko <[email protected]>wrote: > > > > Note that AB does not change the bar until a tick comes in to set the > open price. That can be a second or two for high volume > > trading periods but two minutes or never in > > thinly traded periods. I am not sure what AB does if there is never a > tick in the bar. It may set the OHLC to the last bar that > > had actual data. > > Not true. AmiBroker Pro will execute your formula with every new tick (but > not more often than 10 times per second) > - if intraday refresh interval is set to zero. > > It will also refresh the chart every second even if there is no new data > because IB plugin sends "general update" every second. > > Best regards, > Tomasz Janeczko > amibroker.com > ----- Original Message ----- > From: "Barry Scarborough" <[email protected]> > To: <[email protected]> > Sent: Tuesday, March 17, 2009 4:17 PM > Subject: [amibroker] Re: Testing for new bar using string manipulation and > quotation time > > > > You are making this much more difficult than it needs to be. If you want > to know if the bar has changed all you need to do is: > > > > // Check if new bar > > // NZ sets current bar in OldBarTime the first pass through the code. > > OldBarTime = Nz(StaticVarGet("BarTime"), LastValue(TimeNum())); > > NewBarTime = LastValue(TimeNum()); > > if( OldBarTime != NewBarTime ) > > NewBar = True; > > else > > NewBar = False; > > StaticVarSet("BarTime", LastValue(TimeNum())); > > > > NewBar is only true the first pass through your code. The next pass it > will be set False. And this will be true the first tick of > > the new bar. The next scan through the code will find time number equal > to the static var BarTime and will set NewBar false. > > > > > Barry > > > > > > --- In [email protected], "ozzyapeman" <zoopf...@...> wrote: > >> > >> Hello, hoping someone can help out with this string conversion problem. > >> > >> In live trading, I am pulling quotation time using TimeNum(), and want > >> to test for the start of a new bar. So my thinking is to simply convert > >> the time to a number, extract the last two characters, convert back to a > >> number and see if it equals 0. If so, that means the last two digits in > >> the quotation time are "00" and hence we are at the start of a new bar. > >> > >> However, the sample code below is always thinking we have a new bar > >> whether the time is, for e.g. : > >> > >> 10:37:31 or > >> 10:37:00 > >> > >> Obviously, only the second time should trip the 'new bar' print. But > >> instead, both do: > >> > >> > >> barTime = 103731; // we would normally use TimeNum() here, but > >> using a number for example > >> > >> barTimeStr = NumToStr(barTime); > >> > >> NewBarSeconds = StrToNum ( StrRight(barTimeStr, 2) ); > >> > >> printf("NewBarSeconds = " + NewBarSeconds); > >> > >> if (NewBarSeconds == 0) > >> > >> printf(" We have a new bar"); > >> > > > > > > > > > > ------------------------------------ > > > > **** IMPORTANT PLEASE READ **** > > This group is for the discussion between users only. > > This is *NOT* technical support channel. > > > > TO GET TECHNICAL SUPPORT send an e-mail directly to > > SUPPORT {at} amibroker.com > > > > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at > > http://www.amibroker.com/feedback/ > > (submissions sent via other channels won't be considered) > > > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > > http://www.amibroker.com/devlog/ > > > > Yahoo! Groups Links > > > > > > > > > > ------------------------------------ > > **** IMPORTANT PLEASE READ **** > This group is for the discussion between users only. > This is *NOT* technical support channel. > > TO GET TECHNICAL SUPPORT send an e-mail directly to > SUPPORT {at} amibroker.com > > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at > http://www.amibroker.com/feedback/ > (submissions sent via other channels won't be considered) > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > http://www.amibroker.com/devlog/ > > Yahoo! Groups Links > > > >
