multi instrument

[voyager]

Hallo
this must have a quick answer

i try to add more than one instruments and while
Add( "YM" , PeriodType.Minute , 1 );

works, when i use

Add( "FDAX" , PeriodType.Minute , 1 );
Add( "6E" , PeriodType.Minute , 1 );

it doesn't
i guess "FDAX" 6E" are wrong
Where should i find the right names ?

[NinjaTrader_Bertrand]

Hi yoyager, please add the expiry for futures contracts as well like shown here - http://www.ninjatrader-support.com/H...deV6/Add1.html

So FDAX 12-09, 6E 12-09 or YM 12-09...with just YM I guess you grabbed a stock named this way...

[voyager]

Thank you Bertrand


another quickie:
(1,4742 - 1,4736) gives 0,000600000000000378

how comes that ??
Thanks

[cls71]

http://en.wikipedia.org/wiki/Floating_point

you may use decimal variables to reduce the error:

By casting:

(decimal)1.4742 - (decimal)1.4736 = 0.0006

or

1.4742M - 1.4736M

or

decimal num1 = 1.4742M;
decimal num2 = 1.4736M;
decimal result = num1-num2;

... etc

(Calculate with decimal variables requires more resources)

Greetings

[voyager]

thanks cls71

[voyager]

sorry but i tried the above but couldn't fix the problem

I wonder how anyone that makes an indicator or strategy
that works on e.g. EURUSD deal with it.

Maby a topic should be created to illustrate the best way to design
an indicator

(i tried : Close[0]-entryOrder.AvgFillPrice )

Thanks again

[voyager]

is there any way to adjust the floating point Precision to less digits once for all ???

[NinjaTrader_Bertrand]

voyager, I'm not sure I folow, it will depend on the type of variable you use to store your data.

I think this tipe here deals with the issues you're running into - http://www.ninjatrader-support2.com/...ead.php?t=3929

[voyager]

when i try this:

Print (Close[0]-entryOrder.AvgFillPrice);

where Close[0] is 1.4762 and entryOrder.AvgFillPrice is 1,4757 it gives
-4,99999999999945 instead of -5.

so i guess if i had e.g. :
if( Close[0]-entryOrder.AvgFillPrice >= 5 ){ }

that would not work while it should
Thanks for your time

[Ralph]

Hi Voyager,

another solution for your problem is to calculate with integers:

int intClose = Close[0] / TickSize;
int intAvgFillPrice = entryOrder.AvgFillPrice / TickSize;

Regards
Ralph

[voyager]

i tried it as

int intClose = Convert.ToInt32(1.4742 / TickSize);
int intAvgFillPrice = Convert.ToInt32(1.4736 / TickSize);

Print( intClose - intAvgFillPrice );

and it works

Thanks to all