How to enter on an indicator value in ninjascript

[wooofad]

Hi,

I would like to enter on a market and/or limit order when price trades through an indicator value, such as the 20 ema. How would this be done in ninjascript?

[NinjaTrader_ChelseaB]

Hello wooofad,

You could create a condition where the Close price is crossing above the SMA(20)..

if (CrossAbove(Close, SMA(20), 1))
{
EnterLong();
}

Below are public links to the help guide on CrossAbove, Close, and SMA.

https://ninjatrader.com/support/helpGuides/nt8/en-us/crossabove.htm

https://ninjatrader.com/support/helpGuides/nt8/en-us/close.htm

https://ninjatrader.com/support/helpGuides/nt8/en-us/moving_average_-_simple_sma.htm

Also, below is a link to a forum post with helpful information about getting started with NinjaScript.

http://ninjatrader.com/support/forum/showthread.php?p=503609#post503609

I recommend the Strategy Builder 301 course linked in that forum post.

[wooofad]

Hi Chelsea,

I would like to enter at a limit price at the same price where to 20 ema is. This may require having the limit order sitting at that price before the price gets there, or using intrabar data. How would this be done?

[NinjaTrader_ChelseaB]

Hello wooofad,

Is this a different separate inquiry that no longer uses the cross of the close price with an sma?

You can update the price of a limit to the price of an SMA.

EnterLongLimit(SMA(20)[0]);

You can run this with Calculate on bar close set to false to have OnBarUpdate update with each tick in real-time.

If you want this to work historically, you would want intra-bar granularity.
Below is a link to a post on intra-bar granularity.

https://ninjatrader.com/support/forum/showthread.php?p=442810#post442810

If you are wanting to place a limit order when a cross has occurred, you would first need to detect the cross to find the price at which the two series crossed. This means you would have to place the order (or adjust the price of a working order) after the cross has occurred.

A limit order fills at the specified price or better.

A buy limit order placed after a cross above at the price of the cross may fill immediately or may not fill at all until the market comes back to it.

A sell limit placed after a cross above at the price of the cross would fill immediately at the market price.

The rules would be reversed for a cross below. (i.e. a buy limit would fill immediately at market and a sell might sit until the market comes back)