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Dear Jose,
I plotted trendline-date range indicator. It works fine on arithmatic charts , but does not draw straight line on semi-log scale.
Will you do a favour to provide a code which allows a user to choose price scale. I hope you will be kind enough to reply.
With respect,
Dr.Khalid Masood
Jose Silva <josesilva22@xxxxxxxxx> wrote: Chorlton, if the code is too complicated for your level of MetaStock
expertise, you'd be better off employing the services of a
professional programmer. This would allow you to concentrate on your
trading strategy rather than the coding's "nuts & bolts".
In the meantime, below is a trendline indicator with user-definable
dates.
MetaStock -> Tools -> Indicator Builder -> New
Copy and paste formula below.
======================
Trendline - date range
======================
---8<--------------------------
{ Trendline - date range v3.0
�Copyright 2002~2006 Jose Silva.
For personal use only.
All code remains the property of Jose Silva.
http://www.metastocktools.com }
{ Dates user input }
StDay:=Input("start Day",1,31,1);
StMnth:=Input("start Month",1,12,1);
StYear:=Input("start Year",1800,2200,2006);
EnDay:=Input("end Day",1,31,1);
EnMnth:=Input("end Month",1,12,6);
EnYear:=Input("end Year",1800,2200,2006);
{ Selected date periods }
start:=Year()>StYear
OR (Year()=StYear AND (Month()>StMnth
OR Month()=StMnth AND DayOfMonth()>=StDay));
end:=Year()<EnYear
OR (Year()=EnYear AND (Month()<EnMnth
OR Month()=EnMnth AND DayOfMonth()<=EnDay));
{ Date signals }
date1:=start AND Alert(start=0,2);
date2:=end=0 AND Alert(end,2);
date2:=Zig(end AND Cum(1)>1,1,$)=1;
{ Restrict out of range dates to chart }
date1:=If(LastValue(Cum(date1))>0,date1,
Cum(1)=1);
date2:=If(LastValue(Cum(date2))>0,date2,
LastValue(Cum(1))=Cum(1));
{ Sort dates in chronological order }
dateOk:=LastValue(BarsSince(date1))
>LastValue(BarsSince(date2));
day1:=If(dateOk,date1,date2);
day2:=If(dateOk,date2,date1);
{ Data Array type, levels }
dataArray:=C;
price1:=ValueWhen(1,day1,dataArray);
price2:=LastValue(ValueWhen(1,day2,dataArray));
{ Trendline definition }
x1:=LastValue(BarsSince(day1));
x2:=LastValue(BarsSince(day2));
trendline:=price1
+BarsSince(day1)*(price2-price1)
/Max(x1-x2,.000001);
{ Rem next line to extend plot to end of chart }
{trendline:=Ref(Ref(trendline,-x2),x2)};
{ Plot on price chart }
trendline
---8<--------------------------
jose '-)
http://www.metastocktools.com
--- In equismetastock@xxxxxxxxxxxxxxx, "chorlton_c_hardy"
<micro_dot_uk@xxx> wrote:
>
>
> Hi Jose,
>
> Firstly, Thanks for the reply & the link.
>
> I've taken a look but the indicators there seem a bit more
> complicated than what I'm after. As my programming skills aren't the
> best, ideally, I would like to just start off small with regard to
> programming the indicator and then build on it in the future.
>
> Consequently, would it be possible for you to tell me how I could
> simple enter 2 previous dates and then plot a line across my chart
> which goes through both the closes for those days but which would
> also extend up to todays date?
>
> Is this quite complicated or is it relatively straight forward?
>
> Any help much appreciated,
>
> Chorlton
>
>
>
> --- In equismetastock@xxxxxxxxxxxxxxx, "Jose Silva"
> <josesilva22@> wrote:
>
> Chorlton, you will need to first code and then reference your
> trendline for your exploration.
>
> You'll find some examples of coded trendlines at
> http://www.metastocktools.com/#metastock
>
> "2-point plot" - coding example of 2-point, x/y line plot - useful
> for creating automatic chart trendlines.
>
> "LinReg Trendline v4" - Linear Regression Trendline with Standard
> Deviation/Error Channels/Bands, date-adjustable.
>
> "TrendLine" - adjustable automatic trendline.
>
> "TrendLine-dates" - date-adjustable chart trendline.
>
> "Benchmark trendline" - plots a performance benchmark trendline
> based on a fixed % yearly growth rate - with several user inputs.
>
>
> jose '-)
> http://www.metastocktools.com
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