Newbie question

[yawbus]

Hi,
I'm new to NinjaScript. In the following example I try to do two things: 1. mark all the swing high/low points, 2 mark the most recent swing high/low points.

The first part is done w/o problem. The second part is the one that gives me problem. When I uncommend the last command line (which is supposed to mark the most recent peak), the markings for all the swing high/low points (i.e. first part of the program) will disappear consequently. However this command line is not different from the one used to mark the most recent trough used in the same program.

I've spent a few days debugging this but to no avail. Please can anyone help ?

Thanks,
Kevin

[yawbus]

for (int upOcc = 1 ; upOcc <= CurrentBar; upOcc++)
{
upCount = Swing(Strength).SwingLowBar(0, upOcc, CurrentBar);
if (upCount <= 0)
break;
DrawTriangleUp("Up"+upOcc , true, upCount, Low[upCount] -5 * TickSize, Color.Lime);
}

for (int dnOcc = 1 ; dnOcc <= CurrentBar; dnOcc++)
{
dnCount = Swing(Strength).SwingHighBar(0, dnOcc, CurrentBar);
if (dnCount <= 0)
break;
DrawTriangleDown("Dn"+dnOcc , true, dnCount, High[dnCount] +5 * TickSize, Color.Blue);
}

upTrendStartBarsAgo = Swing(Strength).SwingLowBar(0, 1, CurrentBar);
downTrendStartBarsAgo = Swing(Strength).SwingHighBar(0, 1, CurrentBar);

if(upTrendStartBarsAgo<downTrendStartBarsAgo)
{
DrawTriangleUp("Upmost" , true, upTrendStartBarsAgo, Low[upTrendStartBarsAgo] -10 * TickSize, Color.Black);
}
else
{
Print("dn " );
//DrawTriangleDown("Dnmost" , true, downTrendStartBarsAgo, High[downTrendStartBarsAgo] +10 * TickSize, Color.Black);
}

[NinjaTrader_Bertrand]

Welcome to our NinjaScript - to see the history of drawing objects, please use a unique tag Id for each one created such as by adding CurrentBar to your individual string value - with your code you would always modify the last drawn one and thus not see any history.

http://www.ninjatrader-support2.com/vb/showthread.php?t=3419

[yawbus]

Bertrand,
Thanks for the reply.

Sorry I didn't make my problem clear. I am not just concerned about missing the markings for the most recent peak/trough, I in fact lose all the markings for ALL the peaks and troughs if I uncomment that particular command line - please see the two pictures attached. The "commented.jpg" shows all the peak/trough markings when the command line is commented out. The "uncomment.jpg" shows that all the markings disappear when the command line is put back in.

Thanks in advance for your help.

[NinjaTrader_Bertrand]

yawbus, any errors in the log tab as this happens?

Is your current bar check at the OnBarUpdate() start high enough to allow plotting in this case?

http://www.ninjatrader-support2.com/vb/showthread.php?t=3170

[yawbus]

Bertrand,
Thanks for the pointer. The problem is indeed caused by insufficient bars.