Hi there! You should be able to see one set of data here with Normal vs Hig res data:
http://smg.photobucket.com/albums/v325/wallgrenj/AmiBroker/?action=view¤t=Normal3TFvsNotNormal.jpg Regards, Jorgen --- In [email protected], "sidhartha70" <sidharth...@...> wrote: > > Jorgen, > > Interesting discussion. > I have to admit that I'm finding it difficult to visualize exactly what you > are suggesting. Would you mind posting a screen shot somewhere that we can > see as an example of how you are using time frames differently...? > > TIA > > --- In [email protected], "jorgen_wallgren" <jorgen.wallgren@> wrote: > > > > Thank you Tomasz and Dennis for your input and comments! First of all, the > > classic future leak error is taken care of, but it's not clear in the short > > code example I gave. Thank you! > > > > Then I agree with what you say Tomasz, and my solution is not what we would > > call a normal multiple timeframe system. But that's also the whole idea > > with it. Because as a day trader I basically want to know what's going on > > every mS. I don't sit and wait for a 1, 5 or 15 min bar to be completed > > before I take a decision. I look at it and try to figure out where it's > > going. And here is where my data sampling is created in such way it gives > > me continuous timeframe data so I can tell with very high probability where > > the price is heading. Then why waste chart space when all timeframe data > > can be in the same chart! But to be clear and easy to interpret, it then > > has to have the same resolution. > > > > The power of timeframes in day trading is when people using different > > timeframes "start to agree" where the price should go- and as a result you > > have high probability trades in front of you. But it's of course more to it > > than that. :-) > > > > Regards, > > > > Jorgen > > > > --- In [email protected], "Tomasz Janeczko" <groups@> wrote: > > > > > > Hello, > > > > > > Thank you for your post. > > > That kind of explanation of what you are after I was expecting and I am > > > glad you posted it because > > > now we can discuss facts not opinions. I was not expecting appologies, > > > but just the information what you are after and you delivered > > > it now. > > > Thank you. > > > > > > To the matter - there seems to be some kind of misunderstanding what > > > AmiBroker's built-in time frame functions > > > are for. To make it straight - they are provided to build the systems > > > based on many time intervals in exactly the same > > > way as human would do, looking at 2 or more charts at the same time. > > > Imagine you have the system that looks onto daily and weekly chart. That > > > is exactly the purpose of time frame functions. > > > So time frame functions allow you to get the "weekly" data from within > > > "daily" chart. As in weekly chart, there is ONE > > > open, ONE close, ONE high and ONE low PER WEEK. That is exactly what you > > > would see on the weekly chart if > > > you combined daily and weekly "by eye". > > > Not only that, you will know weekly high/low and close values only when > > > week has ended (on Friday close). > > > And that is exactly how AmiBroker's timeframe functions work - they give > > > you the value of higher timeframe > > > at the bar when higher interval is completed. > > > The manual > > > http://www.amibroker.com/guide/h_timeframe.html > > > gives example of so called "triple Elder screen" that combines signals > > > generated in daily and weekly timeframes. > > > > > > What you are doing with your functions is different, you are not creating > > > higher timeframe data at all. > > > What you do is some gated data sampling. The following code will generate > > > something like that, > > > you will get upto 5 different "weekly" values per one week, instead of > > > one, as you wanted: > > > > > > newframe = TimeFrameExpand( BarIndex(), inWeekly ); > > > newframe = newframe != Ref( newframe, -1 ); > > > > > > SteppedHigh = HighestSince( newframe, High ); > > > SteppedLow = LowestSince( newframe, Low ); > > > > > > Plot( SteppedHigh, "SteppedHigh", colorBlue ); > > > Plot( SteppedLow, "SteppedLow", colorBlue ); > > > Plot( C, "Price", colorBlack, styleCandle ); > > > > > > There are two caveats however: > > > - such approach is not equivalent to "normal" mutiple timeframe system > > > that only uses data from *completed* interval > > > - as Dennis pointed out in his reply, such approach may very quickly lead > > > to classic future leak error, > > > because you may be using your "quick weekly" data before they are settled. > > > > > > (The above uses daily/weekly intervals for illustration purposes, but the > > > same applies to any time frame). > > > > > > Best regards, > > > Tomasz Janeczko > > > amibroker.com > > > ----- Original Message ----- > > > From: "jorgen_wallgren" <jorgen.wallgren@> > > > To: <[email protected]> > > > Sent: Thursday, August 13, 2009 4:18 PM > > > Subject: [amibroker] Re: TimeFrames: Is their use flawed? > > > > > > > > > If I have offended you, I am sincerely sorry! AmiBroker is the best > > > program available and I love working with it!!! Nothing wrong > > > with AB!!! > > > > > > One of the reasons the TF Functions didn't do the job in my specific case > > > was that my systems works with 1, 5 and 15 minute > > > timeframes. In the chart I need to see (and save) all the values from all > > > the TFs plotted with 1 minute resolution. Basically to > > > plot the TF data as a staircase is probably the best way to display the > > > results for easy viewing and it's actually often so that > > > some TF values in a 1 minute resolutions often very closely follow a > > > staircase pattern- such as a Moving Average. But the AB TF > > > Functions gives me the last value for each period. I needed more. Now > > > when I have all values in each period it reveals huge amount > > > of information when the three time frames are plotted in one indicator > > > with the same data resolution. For example instead of 1 value > > > for a 15 minute period, I have now 15 values. > > > > > > Then I wouldn't like to go so far to prove my point by publish the work > > > and system I have been working on for months. I have a > > > system which seems to work rather well and I am sorry, but that one I > > > will keep for myself. I could send anyone who wants a screen > > > capture of the indicator with data from 3 TFs plotted. But such a screen > > > capture could be faked. So I will instead give a short > > > explanation how easy it is to create what I was looking for. And the > > > reason it was easy to create, after I figured it out, was > > > because AmiBroker is a great program with fantastic features. > > > > > > First of all, I use AB TF Functions to get the BarIndex in each TF. By > > > having that I can tell when each TF has a new period, and any > > > holes doesn't matter. Then I just go in a loop from first visible bar - > > > as many bars I need extra, until end of the array. So in > > > this loop when a new period is detected, I jump 1 step back and collect > > > the values I need and the jump is equal to the TF I need > > > data from. Here is a part of that code: > > > if ( NewTFBar[i] ) > > > { > > > for ( n = i; Counter < Periods AND n >= 0 ; n-- ) > > > { > > > if ( NewTFBar[n] ) > > > { > > > SUMA = SUMA + Close[ n - 1 ]; > > > if ( Counter < BBPeriods - 1 ) > > > SUMB = SUMB + Close[ n - 1 ]; > > > > > > Counter++; > > > } > > > } > > > Etc. > > > I hope that settles it and again it's not my intention to talk bad about > > > AmiBroker or to insult anyone. > > > > > > Regards, > > > > > > Jorgen > > > > > > > > > > > > --- In [email protected], "Tomasz Janeczko" <groups@> wrote: > > > > > > > > Hello, > > > > > > > > TimeFrame functions work perfectly. > > > > You may not understand them but it is not the reason to send such > > > > unjustified opinions. > > > > > > > > If you "wrote your own" why don't you publish your formulas so everyone > > > > can judge? > > > > Otherwise it is just plain useless talk. > > > > > > > > Best regards, > > > > Tomasz Janeczko > > > > amibroker.com > > > > ----- Original Message ----- > > > > From: "jorgen_wallgren" <jorgen.wallgren@> > > > > To: <[email protected]> > > > > Sent: Thursday, August 13, 2009 10:59 AM > > > > Subject: [amibroker] Re: TimeFrames: Is their use flawed? > > > > > > > > > > > > > Herman, I agree with you and I have the same questions. I have been > > > > > working on a RT system using data from 2 additional time > > > > > frames and the result was very clear! I can't use the AB TimeFrame > > > > > Functions and get a system which works in real time and can > > > > > also be properly be back tested. > > > > > > > > > > Therefore I wrote my own TimeFrame Function and now when I have the > > > > > data from the 2 longer timeframes in the same resolution as > > > > > my > > > > > chart interval, 1 minute, everything works very well. > > > > > > > > > > Regards, > > > > > > > > > > Jorgen > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > **** 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 > > > > > >
