Best way to calculate the size of the position based on stoploss in points

[termi_80]

I need your help to better calculate the struggle, I come from the mql language and normally use this function:

Double CalculateLotSize(double MMRiskMoney,double sl)
{
double MMTickValue = Instrument.MasterInstrument.PointValue * TickSize;
double MMTickSize = Instrument.MasterInstrument.TickSize;

double lot = MMRiskMoney / (sl * (MMTickValue / MMTickSize));
return lot;
}

I tried it on the demo sim 101 account and on Eurusd
I return a struggle 100000 lots
to risk $ 100
with 0.001 stoploss
does not convince me much.

Thank you

Best Regards

[NinjaTrader_Jesse]

Hello termi_80,

From the code provided I am not sure what is wrong because I don't know what you tried in NinjaScript or what your original code looked like or what the result was. The code you provided looks pretty close to NinjaScript, the variables getting tick size and point value are correct.

To find out what is wrong you would need to compare what you originally used against what you made for NinjaScript and make sure all the values and results are the same.

You can use Print statements in NinjaScript to output data or variables to the output window:

https://ninjatrader.com/support/helpGuides/nt8/print.htm?zoom_highlightsub=print

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

[termi_80]

Forgive me, maybe I did not explain the function in question well was tried on Ninja Trader, as you can see in this photo


My question is,This calculation is correct?
I tried it on the demo sim 101 account and on Eurusd
The function return a struggle 100000 lots, but i sound me not so good....
to risk $ 100
with 0.001 stoploss
For forex in ninja trade i need to divide for 1000?

Best Regards

[Danila]

Forgive me

Hello, termi_80.
in order for you to be given a competent answer you need to correctly formulate your post:
1. Write down your end goal. i.e. what are you trying to achieve?
2. write and describe the variables you use.
3. write the values you use for your variables.
4. Write and describe the sequence of your steps in your function.
5. write why for lots you return double and not int?
To help you, the community needs the full picture.
but Perhaps answering these questions will close your own question.

[termi_80]

Hi Danila,
Thanks for support.

As I wrote I am new to the world Ninja Trader, my goal to make it simple is:

Create a function that receives as input :

-Risk in money
-StopLoss in point

And Must return:

Lots Size (this function must be work for the forex but also for the futures and index)

Example:

- Risk In money 100 $
- Stoploss Point 0.00100
- Assett EurUsd

Return

LotSize example 100 MicroLots ?

I hope to be more clear now.

Thanks

Davide

[NinjaTrader_Jesse]

Hello termi_80,

In regard to the code you made, I couldn't say if that's correct or not you would need to use math and see if what you are doing is what you wanted.

You can view an instruments tick size and point value by using the instrument manager or you can use a Print in your code to output these values to the output window.

Once you know the values for the tick and point value you can use a calculator to manually calculate the value and check if that is correct and what you wanted to do. Once you confirm that you can know if the code is right or wrong.

A forex instrument uses lot sizes for orders so you will commonly see sizes like 100,000 which would be a full lot. When using NinjaScript you need to submit forex quantiles as the full size, for example if you wanted to submit an order with 100,000 or 1 lot its quantity needs to be 100,000 in NinjaScript to do that.

https://ninjatrader.com/support/helpGuides/nt8/print.htm?zoom_highlightsub=print

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

[termi_80]

Hi,

in the photo attacched you can find print of value



This is my Function:




The result is for risk 100€ with 0.0001 pips of EURUSD the function return 100 Lots

[NinjaTrader_Jesse]

Hello termi_80,

Is that the math that you wanted to use? You can use the print to output the data for your own analysis to make sure that is right for what you wanted. I can't tell you if that's right or not because it would be up to you to determine if that math is correct for how you want to use the value.

I would suggest to take a pen and paper and write out the normal math equation that you wanted and then compare it with this result, is it correct or the same? If not you would need to provide the math that you wanted to use so we can see how that may be different from what you tried.