Swing Indicator

[ivb73077]

Hello,

I am using the Swing indicator and trying to programatically capture the bar at which a Swing begins.

For instance, say I am looking at a chart and see that 9 minutes ago, a Swing High occurred and lasted for 7 bars (i.e. there are 7 green dots). How do I capture that the Swing commenced 9 bars ago? I just want to retrieve the bar at which the Swing began.

Thank you.

Isaac

[NinjaTrader_AlexG]

Hello,
Thanks for posting today.

This could be done by adapting the code from the Swing indicator, which is included in NinjaTrader, and tracking when the first item is plotted using a Boolean value such as isFirst = true;

Once this first occurrence has occurred you can change that Boolean to false and no longer receive values that you do not need.

Once you reset the swing plot you can then also reset your isFirst Boolean back to true so that it will be the first instance when it plots again.

To adapt this code follow these steps.

• From the Control Center>Tools>Edit NinjaScript>Indicators>Swing
• Right mouse click and Save As... rename the indicator to create the custom indicator.
• Adapt the code to meet your needs
• Right mouse click and select Compile
• This custom indicator will now appear in your list of default indicator and can be added to a chart

Please let us know if we may be of further assistance for anything NinjaTrader.

[arbuthnot]

Hello,

I am using the Swing indicator and trying to programatically capture the bar at which a Swing begins.

For instance, say I am looking at a chart and see that 9 minutes ago, a Swing High occurred and lasted for 7 bars (i.e. there are 7 green dots). How do I capture that the Swing commenced 9 bars ago? I just want to retrieve the bar at which the Swing began.

Thank you.

Isaac

The MRO method will help you here.

Please refer to this thread:

http://www.ninjatrader.com/support/forum/showthread.php?t=71828

Edit: Alex and I posted at the same time. Alex has given a very effective method. The one I've suggested is a different approach.

[ivb73077]

Thank you.

Before moving ahead, I wondered if you could provide some more clarity on the arguments taken by the Swing indicator. Specifically,

barsAgo
instance
lookBackPeriod

I have already seen this link: http://www.ninjatrader.com/support/h...html?swing.htm

but remain a bit unclear of what the arguments refer to and how to populate them. The strength parameter tells us the number of bars before and after that are required to identify a swing. I am quite unclear as to how the lookbackPeriod works with this.

Please provide some more detail or refer me to another source.

Thank you.

[koganam]

Hello,

I am using the Swing indicator and trying to programatically capture the bar at which a Swing begins.

For instance, say I am looking at a chart and see that 9 minutes ago, a Swing High occurred and lasted for 7 bars (i.e. there are 7 green dots). How do I capture that the Swing commenced 9 bars ago? I just want to retrieve the bar at which the Swing began.

Thank you.

Isaac

The shipping Swing indicator, more or less directly gives you that information.

#region Functions
/// <summary>
/// Returns the number of bars ago a swing low occurred. Returns a value of -1 if a swing low is not found within the look back period.
/// </summary>
/// <param name="barsAgo"></param>
/// <param name="instance"></param>
/// <param name="lookBackPeriod"></param>
/// <returns></returns>
public int SwingLowBar(int barsAgo, int instance, int lookBackPeriod)
{...}

[ivb73077]

I will play around with it and see if I can get what I need.

I still am unclear as to what the lookbackPeriod parameter does? Can you please provide some added detail of how this works? Thank you.

[koganam]

I will play around with it and see if I can get what I need.

I still am unclear as to what the lookbackPeriod parameter does? Can you please provide some added detail of how this works? Thank you.

This is what the NTHelp says. I am not sure how else it can be explained any more clearly. What is the problem with the statement?

[NinjaTrader_AlexG]

Hello ivb73077,
Thanks for the reply.

The lookBackPeriod parameter determines how far back you would like to run the test condition.

In other words, the swing indicator condition is testing on the current bar and then it will test if the condition is true for x number of bars back as indicated by the lookBackPeriod parameter. So if you set it to 5 as your lookBackPeriod, it will test on the current bar and then test on 1 bar back, 2 bars back, 3 bars back... until the 5th bar back is tested to determine if the condition is met.

Please let me know if that clarifies that parameter definition or if we can offer further clarification or assistance.

[ivb73077]

That is a very helpful reply. Thank you.