Iorder

[dvercher]

I am trying to understand the sample Cancel Order but I have problems to get it.
I checked the ninjatrader help guider Iorder, but still confused.

What's does "null" mean? Can you explain in different words Iorder please?

Thanks

Daniel

[NinjaTrader_Bertrand]

Daniel, the IOrder object is simply a C# object holding info (the properties you can access) for an order you issue. C# doesn't like emtpy objects to be accessed and thus you have to check for null before accessing your IOrder object :

http://www.ninjatrader.com/support/forum/showthread.php?t=4226

[dvercher]

Ok, thanks, just a couple more of questions:
1) If barnumberoforder = 0
and then barnumberoforder=CurrentBar
CurrentBar >barNumberoforder +3

I don't get it, Can you give me an example with numbers please

2)Apart from Position.MarketPosition == MarketPosition.Flat, we also need if(entryOrder ==null && mar****rder == null && Close[0] > Close [1] just in case there were any working entry order, is that correct?

Thanks

Daniel

[NinjaTrader_Bertrand]

Daniel, barNumberOfOrder simply stores the CurrentBar value when the order was submitted so you have it as a reference later.

CurrentBar now is 1023 and we submit our order, we store this value as well at this time in barNumberOfOrder, our variable.

We can then later check the CurrentBar against the variable stored value to determine, if we submitted the order 3 bars ago and need to cancel it then if still not filled.

Yes, the checks are the entry condition (Close > Open), a flat strategy position and emtpy IOrders so no order is already working.

[rev2011]

refresh on script

I did this script but it doesn't refresh when conditions changes.

Can you help me to do the refresh on script?


if( (diffArr.Get(CurrentBar)<diffArr.Get(CurrentBar - 1))
&& Close[1]>Open[1] && Close[0]<Open[0])){

BackColor = ShortEntry;

Ty

[NinjaTrader_Bertrand]

rev2011, welcome to our forums here - are you running the script then with CalculateOnBarClose set to false?

http://www.ninjatrader.com/support/helpGuides/nt7/calculateonbarclose.htm

[rev2011]

Yes, I'm running the script with CalculateOnBarClose set to false.

[NinjaTrader_Bertrand]

Then please try incorporating and else block in your condition setting the BackColor to Color.Emtpy when your conditions is not true - http://www.ninjatrader.com/support/h.../backcolor.htm

[rev2011]

Ty Bertrand

The BackColor is fixed, but for the MACD Histogram to be up and down dif color is not fixed, it needs a refresh.

diffArr.Set(macd - macdAvg);

Value.Set(macd);
Avg.Set(macdAvg);
if( diffArr.Get(CurrentBar)>diffArr.Get(CurrentBar - 1)){
DiffUp.Set(macd - macdAvg);
} else {
DiffDown.Set(macd - macdAvg);
}

[NinjaTrader_Bertrand]

I would suggest looking into the Plot.Reset method for those cases, so when you set the Up Plot, reset the Down Plot and vice versa.

[rev2011]

Do you have any link to it?

[NinjaTrader_Bertrand]

You can look into the first reference sample here - http://www.ninjatrader.com/support/f...ead.php?t=3227

[dvercher]

Thanks a lot, perfectly explained.
Going on with SampleCancelorder, I have doubts with :
"entryOrder == Order" and "entryOrder == execution.Order"

What do they mean?

Thanks again

Daniel

[NinjaTrader_Bertrand]

You're welcome, this code just checks which IOrder object calls the OnOrderUpdate() or the OnExecution(), just keep mind NT is event based, this will simplify understanding the operating structure.

[dvercher]

About the orders Bertrand, what's >0 ? I mean, in the code you can see:
if (execution. Order.OrderState==OrderStateFilled || execution.Order.OrderState == OrderState.PartFilled || ..... and at the end it is execution.Order.Filled > 0.

What does it mean?

Then it says: Resets the entry Order object to null after the order has been filled.
if (execution.Order.OrderState != OrderStgate.Prtfilled)
{
entry order = null;
}

Shouldn't it be:
if (execution.Order.OrderStgate ==OrderState.Filled)
{
entryOrder = null)
}