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Re: [amibroker] Re: Drawing a line from AFL



PureBytes Links

Trading Reference Links

That is what i was looking for, I thought perhaps it was already out there.


h


For tips on developing Real-Time Auto-Trading systems visit:

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Saturday, November 17, 2007, 6:41:35 PM, you wrote:


> Well, Amibroker has drawing "layers" already for manual chart mark-

> ups.  Why doesn't Tomasz just provide a way to programatically get to 

> them?  That way, there would be no programming (e.g., looping) 

> required to update them on the user's part.  Once drawn, Amibroker 

> would take care of any refreshes needed when the lines come into the 

> viewable area.



> --- In amibroker@xxxxxxxxxxxxxxx, "Ara Kaloustian" <ara1@xxx> wrote:


>> I agree loops are not very efficent, especially in real time.


>> Depending how many lones you have, you might use combination of 

> static variables (containing the x,y coordinates for lineArray) and 

> use dynamic variables to create the name of the static variable.


>> There is certainly overhead with this also, but may be less 

> depending on number of lines you want to keep.



>>   ----- Original Message ----- 

>>   From: Herman 

>>   To: Thomas Z. 

>>   Cc: amibroker@xxxxxxxxxxxxxxx 

>>   Sent: Saturday, November 17, 2007 8:31 AM

>>   Subject: Re: [amibroker] Drawing a line from AFL



>>   Thanks Thomas and Ara, 





>>   But the linearray must be recalculated and plotted each time the 

> chart refreshes, else it disappears.





>>   Drawing a line by hand will leave the line on the chart exactly 

> where it was plotted without subsequent processing overhead (from the 

> user point anyway).





>>   When I draw many lines, for example tradelines or zigzags, I need 

> to use a loop and the overhead gets too much (using 5 sec bars). 

> While if the line would stay displayed like a study, it would require 

> no maintenance. All I would need to do is calculate the last leg. far 

> more efficient...





>>   herman





>>   For tips on developing Real-Time Auto-Trading systems visit:


>>   http://www.amibroker.org/userkb/





>>   Saturday, November 17, 2007, 10:38:01 AM, you wrote:





>>   > Hello,





>>   > you could use the following code:





>>   > Value = LineArray(xStart = 0, yStart = 10, xEnd = BarCount, 

> yEnd = 10);


>>   > Plot(Value, "Value", 4, 1);





>>   > Check out the LineArray function help for additional parameters 

> that you


>>   > could use.





>>   > Kind regards,


>>   > Thomas Zmuck


>>   > www.PatternExplorer.com











>>   > From: amibroker@xxxxxxxxxxxxxxx 

> [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf


>>   > Of Herman


>>   > Sent: Saturday, November 17, 2007 3:06 PM


>>   > To: AmiBroker Users Group


>>   > Subject: [amibroker] Drawing a line from AFL





>>   > Is it possible to draw a line on the chart using AFL, so that 

> the line


>>   > "stays permanently displayed". Just like when you draw a line 

> by hand.





>>   > I know there are complicated procedures, using static 

> variables, but I would


>>   > like to take advantage of the "study" memory not to have to 

> refresh the


>>   > lines with each execution.





>>   > Any examples would be appreciated.





>>   > TIA,


>>   > herman


>>   >  











>>   > Please note that this group is for discussion between users 

> only.





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