using indicator to drive strategy

[KarstenKafl]

hi there

Im bit confused about how to get an indicator to start a buy order.
I understand that i can use if sentences - to say if some thing is equal or cross over etc.
But im testing out just using the Ninjacator Daytrader Signal indicator - to start a buy or sell order. But im not compeltely sure when/how i get that action from the inditcator into the strategy? i dont think there is anythign that cross over/below or is equal?

I hope someone can help :-)

Thanks

[NinjaTrader_PaulH]

Hello KarstenKafl,

Thanks for your post.

We would not be able to advise on the particulars of the 3rd party indicator and recommend that you contact them for specific assistance with that indicator.

In general, in NinjaTrader8, you can use Chart Alerts based on an indicator applied to the chart and according to conditions that you can configure through the conditions builder, one action out of the chart alert is to place an order. Here is a link to our chart alerts: https://ninjatrader.com/support/help...t8/?alerts.htm

In general, in a strategy that reads an indicator, the indicator may provide a plot signal that can be read by the strategy, typically the signal would be 0 for no signal, +1 to go long or -1 to go short. In this case, we have no knowledge of the 3rd party indicator so the best source of how to use would be from them.

[KarstenKafl]

Thank you Paul

It looks like the developers have made it with this setup - but for some reason i can not get it to "activate" a buy/sell.

I can see that the setup is like this ncatDayTradingSignal1.LongSignal[0] - and it is a dobule series - but i have tried setting it to anything - like if ncatDayTradingSignal1.LongSignal[0] != 0 - and also opposite if ncatDayTradingSignal1.LongSignal[0] == 0 and nothing is activated.

So i wonder if Im most likely doing somethign wrong with the time - maybe the signals are never present in the current bar - but only one bar behind?

So if i wanted to check against the last bar - how would i do that?

Thanks

[NinjaTrader_PaulH]

Hello KarstenKafl,

Thanks for your reply.

What I would suggest is print out on every bar so that you can see what the value of the series holds on each bar.

Here is a link to our debugging tips: https://ninjatrader.com/support/help...script_cod.htm

Something like Print (Time[0]+" Signal = "+ncatDayTradingSignal1.LongSignal[0].ToString());

"...maybe the signals are never present in the current bar - but only one bar behind?" We have no knowledge of the indicator so we could not say but that is possible. If your print statement does not yield results then you may need to do a for loop on each bar to see if there is indeed a "bars ago" type of signal.

[KarstenKafl]

Thanks again Paul

Now im getting bit confsued - i try with just normal simple EMA straegy - i use 1 minut - and set it to buy if there is cross over - but this strategy also does not do anything... so im considering if misunderstanding the cross over setup. Can i use crossover with on bar close - with 1-5 miunt bars? or do i need to check on each tick?

[NinjaTrader_PaulH]

Hello KarstenKafl,

Thanks for your reply.

I think you better post the code you are using since we are switching subjects.

You do not need to be on tick data for a crossover event.

[KarstenKafl]

It seems that im trying to use cross above - from EMA - with a price - like ask or bid - but that is not working on bars- is that correct?

[NinjaTrader_PaulH]

Hello KarstenKafl,

Thanks for your reply.

The CrossAbove or CrossBelow methods will work with a data series (the EMA) and a double price value.
Reference:

https://ninjatrader.com/support/helpGuides/nt8/?crossabove.htm

https://ninjatrader.com/support/helpGuides/nt8/?crossbelow.htm