hi,

     i would like to plot a linear regression line from date to date... ( with the chance to extend it to the right...) and the chance to plot parallel reg line up and down .. per example + 5% 10% 15% and -5% -10% -15%

is it possible?

can you help me?

thank you very much

Luigi

Thank you very much. Luigi

Hi Luigi It's difficult to incorporate all the requirements you have asked for. Nevertheless I have modified the first sample and it offers the options I thought you were looking for in your first post. To get the trend lines to extend to the most recent bar on the chart you can change the last 3 lines by substituting zero ("0") for "Shift". The purpose of the Ref() function in those lines is to shuffle the "Line" variable first right then left. This action converts the line extensions that you want to display into N/A results (no plots after the end date). (Example of last three lines without the "shuffle" function) Ref(Ref(Line,-0),0)*(1+(Offset/100)); Ref(Ref(Line,-0),0)*(1-(Offset/100)); Ref(Ref(Line,-0),0); Hope this helps. Roy {Linear Regression Trend Line} {Roy Larsen, 2014, 27/11/14} Offset:=Input("Linear Regression Trend Line, Percent Offset",0,100,5); StrD:=Input("Start Day / End Day, 1-31/1-31",1,3131,0131); StrM:=Input("Start Month / End Month, 1-12/1-12",1,1212,0112); StrY:=Input("Start Year",1900,2020,2013); EndY:=Input("End Year",1900,2020,2013); EndD:=LastValue(Int(Frac(StrD/99.99)*100)); EndM:=LastValue(Int(Frac(StrM/99.99)*100)); StrD:=LastValue(Int(StrD/100)); StrM:=LastValue(Int(StrM/100)); B:=Cum(1); L1:=LastValue(B); Start:=(DayOfMonth()>=StrD)*(Month()=StrM)* (Year()=StrY)+(Year()>StrY)+(Year()=StrY)*(Month()>StrM); End:=(DayOfMonth()>=EndD)*(Month()=EndM)* (Year()=EndY)+(Year()>EndY)+(Year()=EndY)* (Month()>EndM); B:=B=1; B:=BarsSince(B+Start)<BarsSince(B+End); B:=LastValue(Cum(B)+1); Shift:=LastValue(Cum(End)-1 ); Lb:=Cum(End)=1; LinR:=LastValue(ValueWhen(1,Lb,LinearReg(C,B))); LinS:=LastValue(ValueWhen(1,Lb,LinRegSlope(C,B))); Fb:=Cum(1)=1+L1-Shift-B; Fr:=LinR-B*LinS; St:=Cum(Fb)>0; Line:=ValueWhen(1,Fb,Fr)+Cum(St)*LinS; Ref(Ref(Line,-Shift),Shift)*(1+(Offset/100)); Ref(Ref(Line,-Shift),Shift)*(1-(Offset/100)); Ref(Ref(Line,-Shift),Shift);

Hi Luigi To allow extensions of the "Line" variable the last three lines must be changed to ... Line*(1+(Offset/100)); Line*(1-(Offset/100)); Line; These outputs allow each line to extend to the right side of the chart. The upper and lower lines are not parallel because they are based on a plus or minus percentage of the primary trend line. I would need to lock in the price difference as at the end date rather than using a fixed percentage as at present. Don't know when I'll get time to make that and other changes that might still be necessary. The start day-of-month and the end day-of-month are combined in the first definition of the "StrD" variable. The first two digits represent the starting day-of-month, and the second two digits represent the ending day-of-month for the basic trend line. StrD:=Input("Start Day / End Day, 1-31/1-31",1,3131,0131); The start month-of-year and the end month-of-year are also combined in the first definition of the "StrM" variable. The first two digits represent the starting month-of-year, and the second two digits represent the ending month-of year. StrM:=Input("Start Month / End Month, 1-12/1-12",1,1212,0112); This is done because only 6 Input() functions can be used, and 7 would be required to enter all date details separately. There's one Input() function still available but that could be used later to switch the line extensions on or off. Once you understand how the dates are entered I'm sure you'll be able to operate the indicator quite easily. There's more work I'd like to do to improve the indicator but it's unlikely I'll have time to do that for at least two weeks. Roy

Thank you very much...it seems to work well...

anyway if you think that improvement can be done and you want to work on it.. you are welcome

thank you again