Print value but no plot

[Kowal]

Hi,

I am trying to create DeltaBidAsk Momentum indicator, and met strange behavior. Indi prints proper values but do not plot them all the time. See attachement.

I would be grateful for any advice.

Cheers

[NinjaTrader_Austin]

Kowal, I'm not sure exactly what wasn't working right, but I've made a few minor changes to your code and it seems to plot correctly. There are no missing bars. I have a feeling it had to do with not setting a plot on every bar. Please take a look at the attached code and let me know if you have any other questions.

[Kowal]

Quick update. Just noticed its working fine with minute, ticks and range chart. Problem appears only with volume chart.

[Kowal]

Austin,

thanks for such quick respond! however...problem persist. Even after Your changes it does not correctly plot on volume chart still. Other chart types work fine.
Odd.

[NinjaTrader_Austin]

Kowal, I just clarified with a coworker and it is not supported to plot from inside the OnMarketData() method. You can set variables and such but then you need to plot from inside OnBarUpdate().

OnBarUpdate()
{
    up_plot.set(momentum);
}
OnMarketData()
{
    momentum = some_value;
}

In the attached indicator I just copied + pasted the plot section into the OnBarUpdate() method so it might not be 100% correct with regards to the indicator you're trying to create, but it will get you going in the right direction.

[Kowal]

Fantastic!, Austin. Its working now.

Thank You so much.