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Re: [amibroker] Graphing beyond the data



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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 -----
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 -----
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 -----
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 -----
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 -----
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 -----
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@xxxxxxcom>
To: <amibroker@xxxxxxxxxps.com>
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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