Thanks for all the feedback, guys. It's been very helpful!
--- In [email protected], "Barry Scarborough" <razzba...@...> wrote: > > This is a little simpler than the similar approach I mentioned a few posts > earlier. In my trading program I have an initialization function and I set > the lastValue of timeNum in the static var to the current bar on the first > pass through the code. That way NewBar will not be true on the first scan > through the code and that prevents it from being true mid bar, which it will > in the way Tomasz and I proposed. It will wait until the next bar after AB > starts. That may or may not matter to you. > > Barry > > --- In [email protected], "Tomasz Janeczko" <groups@> wrote: > > > > There is much easier and reliable method: > > > > dt = LastValue( DateTime() ); > > > > if( StaticVarGet( "lastdt" ) != dt ) > > { > > _TRACE("New bar"); > > StaticVarSet("lastdt", dt ); > > } > > > > (Note that it works only if Tools->Preferences->Intraday is set > > to show START or END time of interval). > > > > Best regards, > > Tomasz Janeczko > > amibroker.com > > ----- Original Message ----- > > From: "Yofa" <jtoth100@> > > To: <[email protected]> > > Sent: Tuesday, March 17, 2009 1:03 PM > > Subject: Re: [amibroker] Re: Testing for new bar using string manipulation > > and quotation time > > > > > > > Hi, > > > > > > barTime % 100 == 0 will not work reliably! If there is no new tick or no > > > CPU > > > time to do refresh it will skipp new bars a few times! > > > This is a common problem. Look for similar posts here. You will fined > > > code > > > samples. > > > > > > Y > > > -------------------------------------------------- > > > From: "Mike" <sfclimbers@> > > > Sent: Tuesday, March 17, 2009 4:04 AM > > > To: <[email protected]> > > > Subject: [amibroker] Re: Testing for new bar using string manipulation > > > and > > > quotation time > > > > > >> If you have any concerns about rounding, you could use AlmostEqual > > >> instead > > >> of "==". > > >> > > >> http://www.amibroker.com/guide/afl/afl_view.php?id=301 > > >> > > >> Mike > > >> > > >> --- In [email protected], "ozzyapeman" <zoopfree@> wrote: > > >>> > > >>> Thanks a bunch, Mike. Modulo's so much simpler! > > >>> > > >>> > > >>> --- In [email protected], "Mike" <sfclimbers@> wrote: > > >>> > > > >>> > Again, assuming that your approach is sound, better still would be to > > >>> > use the modulo operator. > > >>> > > > >>> > barTime = 103731; > > >>> > > > >>> > if (barTime % 100 == 0) > > >>> > _TRACE( "New bar found" ); > > >>> > > > >>> > Mike > > >>> > > > >>> > --- In [email protected], "Mike" <sfclimbers@> wrote: > > >>> > > > > >>> > > Without commenting on the validity of the approach (I am not a real > > >>> > > time trader), I can suggest that your problem is coming from a > > >>> > > formatting incompatibility. > > >>> > > > > >>> > > Add a format clause indicating zero decimal places and it will work > > >>> > > fine. > > >>> > > > > >>> > > Note too that your switching back to a number again is redundant > > >>> > > and > > >>> > > even error prone since "==" is not necessarily exact when dealing > > >>> > > with floats. Just use the string manipulation directly. > > >>> > > > > >>> > > barTime = 103731; > > >>> > > barTimeStr = NumToStr( barTime, 6.0 ); > > >>> > > > > >>> > > if ( StrRight( barTimeStr, 2 ) == "00" ) > > >>> > > _TRACE ( "New bar found" ); > > >>> > > > > >>> > > Mike > > >>> > > > > >>> > > --- In [email protected], "ozzyapeman" <zoopfree@> 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 > > > > > > > > > > > >
