Backdrawing Arrows

[jeremymgp]

Hello,

I'm working on an trade alert system where arrows are drawn when trade conditions are met, the arrows draw great when new trade conditions appear, but I was wondering if it's possible to "backdraw" arrows on historical charts so I can see previous signals also.

Thanks for your help,
Jeremy

[NinjaTrader_Dierk]

All draw methods have a "barsAgo" parameter to reference historical data points. Please refer to the relevant sections in the help guide.

[NinjaTrader_JoshP]

What you want to do is give each arrow a unique name. If you use the same name it will just modify the arrow and you will end up only having one arrow drawn. So do something like this.

DrawArrowDown([COLOR=Red]"Arrow" + CurrentBar[/COLOR], 0, High[0] + TickSize, Color.Red);