Cannot access bar number 2 or greater

[Richard0168]

Hello,

I'm trying to plot by specifying the bar number (e.g. High[BarNumber], Low[BarNumber]) but I can only plot lines for High[0], Low[0] or High[1] or Low[1], but not High[2], Low[2] or High[3], Low[3], etc.

I got error message:

Indicator 'RichardBarNumberTest': Error on calling 'OnBarUpdate' method on bar 1: You are accessing an index with a value that is invalid since it is out-of-range. I.E. accessing a series [barsAgo] with a value of 5 when there are only 4 bars on the chart.

This looks like a simple problem to fix, but I have tried many ways still not able to fix. Would appreciate it very much if someone can help me fix this problem.

Thank you.

Richard

[NinjaTrader_ChelseaB]

Hello Richard,

Are you waiting until there are at least 3 bars before using an index of [2] bars ago?

Below is a link to a forum post on index errors.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/1046200-indicator-that-calculate-in-different-chartime?p=1048513#post1048513

[Richard0168]

Hello Chelsea_B,

Fantastic, your suggestion solved my problem. Much appreciated!

Richard