i cant figure out timespan

[NinjaTrader_ChelseaB]

Hello tkaboris,

The code you posted in post # 3 is not an indicator class.

This is a custom class that is not an indicator. (There might be an indicator included with the package, but the code you posted is not it)

That method requires you to supply the double lowerPrice to the method call.

public FVG(string tag, FVGType type, double lowerPrice, double uppperPrice, DateTime gapStartTime)

This is something you would supply to this method and not something that it would provide from the method that I can see.

It is not a public property of an indicator.

[tkaboris]

There is a link to download indicator in post 3 from ecosystem.
I will see if i can try to get to values from the strategy.

[tkaboris]

Would creating Plots first will help?
because right now nothing gets plotted in datawindow

[NinjaTrader_ChelseaB]

Hello tkaboris,

Looking at the file from the User App Share, I see FVG is a custom class that is being used in a public list.

[Browsable(false)]
[XmlIgnore()]
public List<FVG> FVGList
{
get { return new List<FVG>(fvgList); }
}

I also see that Update() is not being called in the getter.

Call Update(); in the getter before returning the new list.

With a list or collection, an index would need to be used.

For example to get the first element.

Print(FVGList[0].lowerPrice);

[tkaboris]

I changed FVG from private to public
public List<FVG> fvgList = new List<FVG>();

With this code its not printing anything in the strategy. Did it work on your end?
when i print .count it prints 0 at all times.

protected override void OnBarUpdate()
{
if(CurrentBar < 10)
return;
if (fvgIndicator != null && fvgIndicator.FVGList.Count > 0)
{
Print(fvgIndicator.FVGList[0].lowerPrice);
}
// Print(fvgIndicator.fvgs.Last);
// if (fvgIndicator != null && fvgIndicator.FVGList.Count > 0)
// {

// }
}

[NinjaTrader_ChelseaB]

Hello tkaboris,

Have you called Update() as directed?

To understand the behavior it would be necessary to debug the indicator by adding prints to confirm that after calling Update() the indicator is adding elements to the list.

[tkaboris]

I wasnt sure where to put Update.
I put it here but nothing prints

[tkaboris]

Would it be possible if you can show me an exaple of how to addplots to plot lowerPrice and uppperPrice

[NinjaTrader_ChelseaB]

Hello tkaboris,

Below is a link to sample code of adding plots and setting the value.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/1182243-exposing-the-wavetrend-indicator-for-strategy-builder#post1182264

Call Update() from the getter of FVGList as advised in post # 12.

public List<FVG> FVGList
get {
Update();
return new List<FVG>(fvgList); }

The help guide provides sample code. See the code example for the TripleValue public property.

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

[tkaboris]

I have updated to include Update(): and in prints, strategy prints only one same instance

Print("last lower price:"+fvgIndicator.FVGList[0].lowerPrice);
Print("last upper price:"+fvgIndicator.FVGList[0].upperPrice);
Prints below. it only prints teh same value, even though new ones formed already many times. .Count method print updated consecutive values it seems. What does this mean?

last lower price:15383
last upper price:15384

public List<FVG> FVGList
{

get {
Update();
return new List<FVG>(fvgList); }
}

[NinjaTrader_ChelseaB]

Hello tkaboris,

This is a C# list.

A list can be looped through.

DotNetPerls provides a tutorial and sample code.

https://www.dotnetperls.com/list

[tkaboris]

in indicator code i have added plots and foreach loop, it complains that it cant convert to double. I am not sure if i am doing it right but again I need to access last or before last occurences and values of upperPrice and lowerPrice values... If i change forlop to int, it still cant conver to Int
public List<FVG> fvgList = new List<FVG>();

protected override void OnBarUpdate()
{
// Only operate on selected data series type
if (BarsInProgress != iDataSeriesIdx || CurrentBars[iDataSeriesIdx] < 4) return;

if (FVGList.Count > 0)
{
MyPlot1[0] = FVGList[0].lowerPrice;
MyPlot2[0] = FVGList[0].upperPrice;
}
foreach (double prime in fvgList)
{
System.Console.WriteLine("PRIME ELEMENT: {0}", prime);
}

[NinjaTrader_ChelseaB]

Hello tkaboris,

The lowerPrice would be a double. The list itself is holding FVG class objects.

Is this code from the host script or the hosted FVGICT indicator?

If this is the host script, the indicator is saved to the fvgIndicator variable correct?

Try:

foreach (FVG fvg in fvgIndicator.FVGList)
{
Print("fvg.lowerPrice: " + fvg.lowerPrice);
}

Or you can use indexes

for (int index = 0; index < fvgIndicator.FVGList.Count(); index++)
{
Print(string.Format("index: {0}: fvgIndicator.FVGList[{0}].lowerPrice: {1}", index, fvgIndicator.FVGList[index].lowerPrice));
}

[tkaboris]

I am not sure but indicator is not hosted, its just from ecosystem.
I am able to print below in indicator code
foreach (FVG fvg in FVGList)
{
Print("fvg.lowerPrice: " + fvg.lowerPrice);

}

but when i am in strategy, i cant print the code it says fvg not in the context

[NinjaTrader_ChelseaB]

Hello tkaboris,

fvgIndicator.FVGList[index].lowerPrice


A strategy that calls an indicator is a host to that hosted indicator (symbiont).

The same is true of an indicator that calls another indicator. The host indicator calls the hosted indicator.