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Conrad,
Note also that amibroker "understands" the start and the end of the
drawn line. Try to draw the same line from end to start and you will
see it is not recognisable. The end should be "after" the start,
something similar to Linearray() function.
It is better, when possible of course, to plot lines from AFL.
Dimitris Tsokakis
--- In amibroker@xxxxxxxxxxxxxxx, "conrad_faber" <c.faber@xxxx> wrote:
> Hi Dimitris
> Thanks for your response.
>
> The line "START=ValueWhen(Cum(IsTrue(Y))==1,Cum(1));" does not seen
> to work for a vertical line (study), i.e. it is only valid between
> and excluding 0 and 180 degrees.
> This however is fine. I can draw the AB and BC lines on the chart
> and then use your method to get the values for calculating the Fib
> projections (instead of marking points A,B and C seperately with
> vertical lines).
>
> Thanks again
> Conrad
>
> --- In amibroker@xxxxxxxxxxxxxxx, "DIMITRIS TSOKAKIS"
> <TSOKAKIS@xxxx> wrote:
> > Conrad,
> > Every custom indicator has an Id number in the upper right of the
> > indicator text.
> > Draw your trendline in a custom indicator [let 2044], name it
[let
> > SU] and then
> > Y=Study("SU",2044);
> > will be an array with all the properties of your trendline.
> > Example
> >
> > Plot(C,"C",1,64);
> > Y=Study("SU",2044);
> > START=ValueWhen(Cum(IsTrue(Y))==1,Cum(1));
> > END=-1+ValueWhen(IsEmpty(Y) AND Ref(IsTrue(Y),-1),Cum(1));
> > LENGTH=END-START;
> > Title="START="+WriteVal(START,1.0)+", END="+WriteVal(END,1.0)+",
> > LENGTH="+WriteVal(LENGTH,1.0);
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "conrad_faber" <c.faber@xxxx>
> wrote:
> > > I want to manually mark a number a bars on a chart for AB to
> > > calculate the Fib ABC expansions. The only way that I am aware
> of
> > is
> > > vertical lines with the appropriate StudyId's, eg AA, BB, CC.
> > >
> > > This then requires me to use the "cross" function that does not
> > seem
> > > to work well with vertical lines.
> > >
> > > Is there perhaps a way that I can get the Barnumber from the
> > > StudyId?
> > >
> > > Any ideas?
> > >
> > > Thanks
> > > Conrad
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