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Ara
is not the last parameter..... but X0 and X1 is the problem here i believe
thans
At 01:02 AM 21-09-2008 21-09-2008, you wrote:
>Panos,
>
>You need another parameter. The last parameter should be 0 or 1. Look
>under lineArray in help.
>
>midline=LineArray( startdatetime , StarMidLine , enddatetime , EndMidLine,
>1 , 0 ) ;
>----- Original Message -----
>From: <mailto:panosbouf@xxxxxxxxxxx>Panos Boufardeas
>To: <mailto:amibroker@xxxxxxxxxxxxxxx>amibroker@xxxxxxxxxxxxxxx
>Sent: Saturday, September 20, 2008 2:41 PM
>Subject: [amibroker] LineArray parallel lines based on study()?
>
>Hi
> How to get some more parallel lines with study() ? I try with LineArray
> but is something missing here
>
>Few days ago tomasz provide How to get study line coordinates and based on
>this example i wrote the following in this example I would like to draw a
>line in between the "RE" and "SU"
>Can any one find my mistake here
>midline=LineArray( startdatetime , StarMidLine , enddatetime , EndMidLine,
>1 ) ;
>
>the code is :
>
>// How to get more parallel lines based on study() ?
>SetChartBkColor(ParamColor("backround ",colorBlack));
>Plot(C, "Price", colorWhite, styleCandle );
>
>su = Study("SU", GetChartID() ); isn = IsNull( su );
>re = Study("RE", GetChartID() ); isn_re = IsNull( re );
>
>begpoint = NOT isn AND Ref( isn, -1 ); //SU
>endpoint = NOT isn AND Ref( isn, 1 ); // SU
>begpointRE = NOT isn_re AND Ref( isn_re, -1 ); //re
>endpointRE = NOT isn_re AND Ref( isn_re, 1 ); // re
>
>// SU
>dt = DateTime();
>startdatetime = LastValue( ValueWhen( begpoint, dt ) );
>enddatetime = LastValue( ValueWhen( endpoint, dt ) );
>startval = LastValue( ValueWhen( begpoint, su ) );
>endval = LastValue( ValueWhen( endpoint, su ) );
>
>// RE
>dtre = DateTime();
>startdatetimeRE = LastValue( ValueWhen( begpointRE, dtre ) );
>enddatetimeRE = LastValue( ValueWhen( endpointRE, dtre ) );
>startvalRE = LastValue( ValueWhen( begpointRE, RE ) );
>endvalRE = LastValue( ValueWhen( endpointRE, RE ) );
>
>// difference RE - SU
>StarMidLine=((startvalRE -startval ) /2) +startval ;
>EndMidLine=((endvalRE -endval ) /2)+endval ;
> Plot( EndMidLine,"",2,1); //
> Plot( StarMidLine,"",3,1);
>// what is missing in the following line
>midline=LineArray( startdatetime , StarMidLine , enddatetime , EndMidLine,
>1 ) ;
>Plot( midline, "Middle line", colorBlue );
>
>// Print Title
>if( startdatetime == 0 ) { Title = "\nStudy with ID=='SU' is not drawn
>yet"; }
>else if( startdatetimeRE == 0 ) { Title = "Study with ID=='RE' is not
>drawn yet"; }
>else { Title =
>"StudySU (x0,y0) = " + DateTimeToStr( startdatetime ) + "," + startval +
>"\n" +
>"StudySU (x1,y1) = " + DateTimeToStr( enddatetime ) + "," + endval + "\n" +
>"StudyrRE (x0,y0) = " + DateTimeToStr( startdatetimeRE ) + "," +
>startvalRE + "\n" +
>"StudyRE (x1,y1) = " + DateTimeToStr( enddatetimeRE ) + "," + endvalRE +
>"\n StarMidLine ="+StarMidLine+
>"\n EndMidLine="+EndMidLine;
>}
>
>////////// code end
>
>PS : i am trying to make something like gann grids do i have to use cum()
>and plot() ?
>
>Thank you again
>panos
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