Re: [amibroker] AFL help please: linearray., AmiBroker Email List Archive

The LineArray function generates array equivalent to " trend line " drawn from point (x0, y0) to point (x1, y1). x coordinates are in bars (zero based), y coordinates are in dollars.

Calculates linear regression line slope from the ARRAY using periods range

new code with "linregslope( ARRAY, periods ) " looks ok

Buy = Cross ( Close, EMA(C,30));

//price = ValueWhen(Buy,1);

x0 = ValueWhen(Buy,BarIndex(),1);

y0 = BuyPrice;

x1 = BarsSince(Buy) == 260;

//x1 = x0 + 260;

y1 = BuyPrice * 1.1;

Line = LinRegSlope(x0 AND y0 AND x1 AND y1,1);

Plot(C,"",1,64);

Plot(EMA(C,30),"",1,1);

PlotShapes(shapeUpArrow * Buy,colorBlue,0,L,-15);

Plot(Line, "line", colorGreen,1);

kris45mar <kris45mar@xxxxxxxxx> wrote:

Could someone please check I am using Linearray correctly? I want to plot a line from the buyprice indicating a certain annualised percent gain, eg 10 % gain after 260 bars. If I use this code ****************** Buy = Cross ( Close, EMA(C,30)); //price = ValueWhen(Buy,1); x0 = ValueWhen(Buy,BarIndex(),1); y0 = BuyPrice; x1 = BarsSince(Buy) == 260; //x1 = x0 + 260; y1 = BuyPrice * 1.1; Line = LineArray(x0,y0,x1,y1, 0, 1); Plot(C,"",1,64); Plot(EMA(C,30),"",1,1); PlotShapes(shapeUpArrow * Buy,colorBlue,0,L,-15); Plot(Line, "line", colorGreen,1); ******************* I get the following error: x1 = BarsSince(Buy) == 260; y1 = BuyPrice * 1.1; Line = LineArray(x0,y0,x1,y1, 0, 1); -------------------------------------------^ Error 2. Bad argument(s) I think I am using the LineArray function correctly. Is there an error in my x0,x1,y0,y1 initialising? Regards ChrisB __________________________________ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250

Check AmiBroker web page at: http://www.amibroker.com/ Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html