Re: Trendlines problem

[Howard Jackson <hrjf4@xxxxxxxxx>]

I think the problem is that you might be attempting to
modify the trendline before its drawn on the chart. If
the chart has a swing high before bar 10, it will try
to set the begin and end point of a trendline that is
not there. 
Try doing this
> If Value1<>-1 and currentbar > 10 then begin
>  TL_SetEnd(tl, D[Value1-1], T[Value1-1], H[Value1]);
>  TL_SetBegin(tl, D[Value1], T[Value1], H[Value1]);
>  TL_SetExtRight(tl, True);
>  Plot1[Value1](H[Value1],"SH");
> end;
I did not test it, but something similar did happen to
me before.

H
--- Massimo Ciarafoni <maxci@xxxxxx> wrote:
> Dear coders
> 
> I have been running into a strange problem with Ts4
> trendline objects, I
> 
> wrote the following simple showme to plot the swing
> highs and a
> trendline starting from last of them.
> 
> Inputs:Str(5);
> Vars:tl(0);
> 
> Value1=SwingHighBar(1,H, STR,STR+1);
> 
> if CurrentBar=10 then begin
>  tl=TL_New(D[5], T[5], H, D, T, H);
>  TL_SetExtRight(tl, True);
> end;
> 
> If Value1<>-1 then begin
>  TL_SetEnd(tl, D[Value1-1], T[Value1-1], H[Value1]);
>  TL_SetBegin(tl, D[Value1], T[Value1], H[Value1]);
>  TL_SetExtRight(tl, True);
>  Plot1[Value1](H[Value1],"SH");
> end;
> 
> The problem is that sometimes the trendline plots
> and sometimes don't.
> I tried on the same intraday data with different
> time and tick
> compressions and as I said some time the Trendline
> plots and sometime
> don't.
> Just changing the compression of data makes
> appear/disappear the
> problem, the error code was -5 or -9 for the
> variable tl but I couldn't
> figure out what is the "real" problem.
> Did anyone experience something similar or can shed
> some light?
> 
> ps. I apologize with CL users for cross posting.
> 
> --
> Best regards
> 
> Massimo Ciarafoni
> 
> 
> "Whatever you can do or dream you can, begin it.
> Boldness has genius,
> magic and power in it. Begin it now." - Goethe
> 
> 
>