retrieving a variables value from a bar before or X bars before

[halgo_boulder]

Hi... I know there's a way to do this using custom series? Can I get a little help or pointer to a good example?

1. I'm trying to build my own heiken ashi calculations inside of my strategy

2. I have this line, which wants to reference a calculated value "ha_ThisOpen" from the previous bar, inside of its calculation.

ha_ThisOpen = (ha_ThisOpen[1] + ha_ThisClose[1]) / 2;

How do I properly "look back" to the value of a variable for previous X bars?

Thank you.

[NinjaTrader_BrandonH]

Hello halgo_boulder,

Thanks for your post.

This could be accomplished by using a custom Series<double> variable.

You would create a custom Series<double> variable in your script, assign the calculation to the Series<double> variable, and then you could access previous values by passing in a barsAgo value for the Series.

For example, if you have a Series<double> named 'ha_ThisOpen' then you could access the previous bar's value for this Series by passing in 1 for the barsAgo.

ha_ThisOpen[1] would get the previous bar's value for this Series. Note that we pass in a 1 for barsAgo to get the previous bar value of this Series.

See this help guide page for more information about working with custom Series: https://ninjatrader.com/support/help...t8/seriest.htm