How to code bars since condition

[Austiner87]

Hi NT8,

How do I code bars since a condition other than entry. similar to the bars since entry/exit condition, I'd like to reference the number of bars since another condition.

Such as

If
(MACD cross 0)

Then
(variable = bars since that event)

Thank you!

[Austiner87]

I'd like to clarify that I can't use the look back period, what I am trying to do is replicate the Bars since entry for a different condition, so that I can do this:

Condition (Bars Since last Condition > 10)

^ I don't believe the look back period can do this because it checks if a condition happened within the look back period and I'd like to set if a condition happened to bars greater than a lookback period.

[NinjaTrader_ChrisL]

Hello Austiner87, thanks for writing in.

We have the MRO (Most Recent Occurrence) method that will return the bar index where a condition happened:
https://ninjatrader.com/support/help...urence_mro.htm

There is an example on that page on how to use it.

If you have any further questions please let me know.

[Austiner87]

Hi NT8, I need some more help on this:

// Prints the high price of the most recent up bar over the last 10 bars (current bar + look back period's 9 bars before that)
int barsAgo = MRO(() => Close[0] > Open[0], 1, 9);
if (barsAgo > -1)
Print("The bar high was " + High[barsAgo]);

^using the example, how would I check for if a variable increased by 1 (+=1) greater than 12 bars ago. my assumption is below, can you please let me know if this is correct?

int barsAgo = MRO((variable += 1) => Close[0] > Open[0], 1,12);
if (barsAgo >= 12)

[NinjaTrader_ChrisL]

Hello Austiner87, thanks for your reply.

The (variable) => is a way to pass in parameters into the lambda function. To check if a variable increased by one you would need to store the variable in a custom Series<T> object:

https://ninjatrader.com/support/help.../?iseriest.htm

Then you can compare MySeries[0] against MySeries[11 to 1] to see if MySeries[0] == MySeries[x]+1

Make sure to test thoroughly with Print statements to check the output.

Please let me know if I can assist any further.