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Just change Cum(1)-1 to Cum(1)-2 in these lines:
PlotShapes((Cross(Cum(C<demandLine AND Cum(1)-1>x1),0))
*shapeDownArrow,colorRed,0,H);
PlotShapes((Cross(Cum(C>supplyline AND Cum(1)-1>x3),0))
*shapeUpArrow,colorGreen,0,L);
--- In amibroker@xxxxxxxxxxxxxxx, "marmal417" <marmal@xxxx> wrote:
> Next thing is really to remove up and down arrows from the bar
after
> a pivot point. Since a line is only drawn once the pivot point is
> completed, it can't really be broken during the day immediately
after
> a pivot point because the line isn't drawn until after the close
of
> that day. Anyway, is there a way to exclude arrows from the day
after
> the pivot?
>
> Another thing Demark writes about is the reliability of lines
which
> are penetrated at the close the day after the pivot point. Let's
take
> for example a new pivot low being created. Upon completion of this
> most recent pivot low (higher lows on both sides) you connect the
> second most recent pivotlow with this newformed one. As it turns
out,
> the line that is drawn between the two pivotlows is penetrated by
the
> close of the day after the most recent pivotlow, i.e. the last day
on
> the chart if a new pivotlow has just been created. In that case,
says
> Demark, it raises the question of reliability regarding that
specific
> line.
> To program this I guess you would have to calculate the slope of
the
> trendline and add that value to the low of the last pivotlow
(since
> the trendline crosses through that point) and check whether or not
> the close the day after is lower than the value of the line. And
if
> it is lower, no line would be drawn.
> Demark writes that a close below the demand line on the day after
a
> pivotlow doesn't necessarily invalidate that line, but I think
it's
> better to assume that is the case. Because in order for the line
not
> to be broken the next day, the stock would have to gap up past the
> line again and never retrace back to the line during the day.
>
> Hope you understand me.
>
> //Martin
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