Help with chart trader and button

[NinjaTrader_ChelseaB]

Hello tkaboris,

You've duplicated fibpressed = !fibpressed; instead of moving it.

With the Object reference error, this may not be related to the bool, or the condition, or calling RemoveDrawObject..

It might be due to calling a drawing object from a non-data-driven thread without using TriggerCustomEvent().

Below is a link to the help guide.

https://ninjatrader.com/support/helpGuides/nt8/triggercustomevent.htm

Also, are you certain the code below or elsewhere in the script is not causing an error?
One line below the conditions action block, please add a print that just says Print("reached here");

[tkaboris]

i am sure that error doesnt come from anywhere else only this fib button. I am not sure how to go about TriggerCustomEvent

i get that reached print after second toggle of the button
draw fib (first toggle)
hhPriceLevel:14987
llPriceLevel:14977
113
13
remove fib (second toggle)
reached here

[NinjaTrader_ChelseaB]

Hello tkaboris,

There is a code sample in the help guide linked in post # 16, under the heading 'Using TriggerCustomEvent to update a previously set custom Series<T> value'.

You will need to call this method and put the logic in the callback to do anything related to bar information in a non-data-driven method.

I am suggesting that either the Draw method call or the logic below the condition may be causing the order. This is still within the Click event hander method Button13Click().

You can also contact a professional NinjaScript Consultant who would be eager to create or modify this script at your request or assist you with your script. The NinjaTrader Ecosystem has affiliate contacts who provide educational as well as consulting services. Please let me know if you would like a list of affiliate consultants who would be happy to create this script or any others at your request or provide one on one educational services.

[tkaboris]

hi looking at the example from
https://ninjatrader.com/support/help...rcustomevent.h tm

Do you mean i need to set values for draw fib method something like this?

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{

if (conditionWhichRequiredUpdate)
{

TriggerCustomEvent(o =>
{

SomeVolumeData[20] = llPriceLevel;
SomeVolumeData[21] = CurrentBar-llDrawnbar;
SomeVolumeData[22] = CurrentBar-hhDrawnbar ;
SomeVolumeData[23] = hhPriceLevel;

}, null);


conditionWhichRequiredUpdate = false;
}

[tkaboris]

i also begin to see this error when i click fib button to draw. But i dont have index parameter in the code

[NinjaTrader_ChelseaB]

Hello tkaboris,

The call to TriggerCustomEvent would be placed in your Button13Click in the if statement where the Draw method is being called.

The Draw method would be in the callback function in TriggerCustomEvent. The bar series needs to be synchronized from a non-data-driven method so that you can attach a drawing object to a specific bar.

[tkaboris]

can you please look at previous reply? i am getting a new error, is it related?

[NinjaTrader_ChelseaB]

Hello tkaboris,

This error can also result from calling a draw method from a non-data-driven method without using TriggerCustomEvent().

May I confirm that you have added this?

But i dont have index parameter in the code

This is not correct. You are using two barsAgo indexes in your Draw.FibonacciRetracements() call, supplied by the CurrentBar-llDrawnbar and CurrentBar-hhDrawnbar variables.

[tkaboris]

no i havent added TriggerCustomEvent. its still confusing how to add.

[NinjaTrader_ChelseaB]

Hello tkaboris,

fibpressed = !fibpressed;

if (fibpressed)
{
   TriggerCustomEvent(o =>
   {​​
       Draw.FibonacciRetracements(this, "fib", true, CurrentBar-llDrawnbar, llPriceLevel , CurrentBar-hhDrawnbar, hhPriceLevel);
   }, null);
}
else
{
Print("remove fib");
RemoveDrawObject("fib");
}​

[tkaboris]

hi thank you it seems to be working at this point. I thought i had to do lot more coding from that example but it was just couple of lines.

May I ask another question.
as you probalby saw chart trader(indicator2) dependent on fvg indicator(indicator1)
indicator2 is on calcualte oneachtick
indicator1 is on calculate onbarclose.

when i print HH levels from indicator2, it prints all HH and LH levels, becacuse calculate mode different and i need to change indicator2 to onbarclose in order to print only HH levels.

if(IsFirstTickOfBar ){

Print("hhPriceLevel1 in Chart Trader:"+fvgInd.HHPriceLevel);

}

My question is there a work around that you can provide an idea to how to go about it so that when i print HH levels from indicator2 and it will print only HH levels? i need charttrader(indicator2) on everytick.

[NinjaTrader_ChelseaB]

Hello tkaboris,

Any hosted symbiote script must use the same Calculate setting as the host.

Meaning both should be Calculate.OnEachTick.

If you want to trigger some actions only after bar close, put this in a condition that checks IsFirstTickOfBar is true.

https://ninjatrader.com/support/helpGuides/nt8/isfirsttickofbar.htm

[tkaboris]

ok.
upon checking futher i see that this code produces error, but it compiles and goes away, Once you start making other changes error comes up again
protected void Button13Click(object sender, RoutedEventArgs e) // Fib show
{
fibpressed = !fibpressed;

if (fibpressed)
{
TriggerCustomEvent(o =>
{
Print("fib drawn");
Draw.FibonacciRetracements(this, "fib", true, CurrentBar-llDrawnbar, llPriceLevel , CurrentBar-hhDrawnbar, hhPriceLevel);
}, null);
}
else
{
Print("remove fib");
RemoveDrawObject("fib");
}


}

[NinjaTrader_ChelseaB]

Hello tkaboris,

If it goes away when you compile its a stale error.

Restart NinjaTrader.

[tkaboris]

thank you it worked, i also opened visual studio and it pipoints better where the stale character is.

I am also having one issue with something else. I was wondering if you can take a look at that thread?
primary index outside of bounds of array with initialiizing empty array thing. very simple script

https://forum.ninjatrader.com/forum/ninjatrader-8/indicator-development/1276163-congestion-indicator-conversion-help#post1276192