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Hello,
It seems you are well versed with future arrays. Could you provide
an example of how to code a line array to simply plot into the future
without changing x0,y0,x1, and y1 of the array for current bars? I
have tried using the slope of the line, negative offsets for the
current line that equal the shift into the future etc. but none of it
works for me. The problem I am having is a simple one - I do not
want any of the historical graph changed (no shifting of graphed data
that already exists). My objective is to simply "continue" the line
array into the future at the same slope as currently exists for
existing data.
Thanks,
David K.
--- In amibroker@xxxxxxxxxxxxxxx, "Ton Sieverding"
<ton.sieverding@xxx> wrote:
>
> But that's not what I am doing, Anthony. I am calculating something
in an 'actual' array as if it is in the future. Then because I want
to see it in the future I am shifting the array. Let's take a simple
example. I want to simulate the SP500 in the future. Therefore I
mirror the SP500 let's say over the last 20 days in a new array. Now
I want to see the SP500 in the future. So therefore I am shifting the
mirrored time series and get something like underneath graph :
>
>
>
> The Ichimoku example Tomasz gave is exactly the same story. He
calculated a future value in an 'actual' array and then shifted the
array in the future because there you want to see the result. The
fact he is doing a calculation in an 'actual' array does not mean
that he is not doing future calculations ...
>
> Regards, Ton.
>
> PS : Please no remarks about the enclosed code. It's just an
example I was using for a group that's working with AmiBroker here in
Belgium. It does what it should do but ...
>
> ----- Original Message -----
> From: Anthony Faragasso
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Tuesday, January 06, 2009 12:38 PM
> Subject: Re: [amibroker] Graphing beyond the data
>
>
>
> Ton,
>
> I commented on Tomasz's example....I do not see where the example
is calculating a future value, Do you ?
>
> If so, Please point it out to me.....
>
> Thanks
> Anthony
>
> PS. If you are calculating all sorts of future values....maybe
you would be so kind as to post an example.
>
> ----- Original Message -----
> From: Ton Sieverding
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Tuesday, January 06, 2009 4:06 AM
> Subject: Re: [amibroker] Graphing beyond the data
>
>
>
> Frankly I do not see the difference Anthony. I am calculating
all kinds of values in an array that are based upon the future. After
having done so, I am shifting the array in the future for visual
purpose. But that's just to show me the values in the graph on the
right place. When making future calculations in the array for me
there is no difference between shifting and extending. So I just do
not get your problem ...
>
> Regards, Ton.
>
> ----- Original Message -----
> From: Anthony Faragasso
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, January 05, 2009 10:40 PM
> Subject: Re: [amibroker] Graphing beyond the data
>
>
>
> Bill,
>
> I agree with you....even from the example that Tomasz
provided...I see it as just shifting the current plot to the right....
> not actually calculating some future values and then plotting
them to the right of the last value....
>
> In the example...if you remove the 25 from the plot statement
>
> Plot( me52,"S1", IIf( Avg26_9 >
me52,colorOrange,colorBlueGrey),styleCloud,Null,Null,25);
>
> It will move / shift the plot back to the left...
>
> Anthony
>
>
> ----- Original Message -----
> From: wavemechanic
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, January 05, 2009 4:23 PM
> Subject: Re: [amibroker] Graphing beyond the data
>
>
>
> TJ,
>
> I don't think we are talking about the same thing perhaps
because of our understanding of the words "shift" and "extend". To
me "shift" means to move to the right into the blank space
and "extend" means to calculate new values in the blank space.
>
> The problem as I see it is shown in the screen shot below
(bars are included for counting purposes). Two charts of a sine
curve in which one is shifted with Plot() by 10 bars into the blank
space. By the definitions above, if the curve is simply shifted the
last value will remain unchanged (as shown) whereas an extended curve
would have a last value around 1 rather than -1.
>
> Based on the definitions above, I view these charts as
evidence that Plot() shifts the curve and does not calculate what the
value should be 10 bars into the future. As far as I can tell,
the "extend" parameter in LineArray() actually does extend into the
future as do the charting tools.
>
> Definitions aside, am I using Plot() correctly or is there
a way to use Plot() in order to get what I call "extend"
functionality. The type of functionality is what is needed for a
variety of studies of the type shown in the TradeStation screen shots.
>
> Bill
>
>
> ----- Original Message -----
> From: Tomasz Janeczko
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, January 05, 2009 2:38 PM
> Subject: Re: [amibroker] Graphing beyond the data
>
>
> No I did not miss the point.
>
> The supported way to EXTEND indicators is to calculate
them as usual and
> plot using XShift. In this approach you are using LAST X
bars of array
> as "future" bars. Then to actually display these future
bars at correct place
> you use XShift.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: wavemechanic
> To: AmiBroker, User
> Sent: Monday, January 05, 2009 7:40 PM
> Subject: Re: [amibroker] Graphing beyond the data
>
>
> TJ,
>
> I think you missed the point. The problem is one of
extension not shifting which Plot() cannot handle. Extending
indicators, as Robert and many of us want to do, is necessary to
identify future values for a variety of studies, including Hurst
channel projections, cycles, etc. Here are TradeStation examples
showing the extension of the analysis (not a shift) into the future.
>
> Bill
>
>
>
>
>
>
>
>
>
>
>
> ----- Original Message -----
> From: Tomasz Janeczko
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, January 05, 2009 10:10 AM
> Subject: Re: [amibroker] Graphing beyond the data
>
>
> Hello,
>
> You can do that using XShift parameter of Plot()
function
> http://www.amibroker.com/f?plot
>
> For coding example, see DispMA (displaced moving
average)
> that is shipped with AmiBroker
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "Robert" <disqplay0@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Monday, January 05, 2009 3:25 PM
> Subject: [amibroker] Graphing beyond the data
>
>
> >I have been working on an indicator that would look
into the futur if
> > the trend continues or if it reverses. It will
graph to the last day
> > of data but I am presently looking at a five day
look ahead. Is there
> > a way to graph the pridicted price beyond the last
data point? If so
> > a shove in the right direction would help. Not
really sure how to do
> > this but would like to learn, thanks in advance for
any support you
> > can give to this question.
> >
> > Disq
> >
> >
> >
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**** IMPORTANT ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
*********************
TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
*********************
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
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