How to code a simple indicator that uses the price from x bars ago

[Davede]

Hi All,

I'm new to NT indicator development and have read some of the helpful steps in the guide but am struggling to create a simple indicator. Any advice or assistance would be greatly appreciated.

I'm trying to create an indicator that is a simple line whose value is the closing price from x periods ago. e.g. 26 bars ago.

I've tried the below, but nothing shows on the chart.

protected override void OnBarUpdate()
        {
            // Use this method for calculating your indicator values. Assign a value to each
            // plot below by replacing 'Close[0]' with your own formula.
            PriceXBarsAgo.Set(Close[26]);
        }

Thanks in advance.

David

[NinjaTrader_Bertrand]

Hi David, welcome to the forums here - have you checked if you get an error shown in the NT log tab (the right most one in the Control Center) when you apply this script to a chart? That would likely be the case since you're not able to access the prior bars after you've passed bar 26 on your chart series (counted from the left most / starting bar with a value of 0). That's why typically a check for enough CurrentBars is added in the OnBarUpdate() section to ensure this access would only be tried if enough bars are available to work with - here's a dedicated tip on this mater - http://www.ninjatrader.com/support/f...ead.php?t=3170