FYI: Random [BarsAgo] indexing issue with Draw.Ray()

[zacharydw00]

Just giving you guys a heads up on this weird behavior I saw today. This indicator has always drawn the Rays correctly as far as I have seen.
Here is the code used in the indicator.

Draw.Ray(this, "AskLine", false, [B][U]-2[/U][/B], dblAsk, [U][B]-3[/B][/U], dblAsk, bshAskLine, DashStyleHelper.Solid, 2);
Draw.Ray(this, "BidLine", false, [U][B]-2[/B][/U], dblBid, [B]-3[/B], dblBid, bshBidLine, DashStyleHelper.Solid, 2);

You'll notice this happened with data after the market closed on Friday, so maybe that's a clue as to why the bar index location on the chart was interpreted wrong.

After reloading the chart the lines were drawn correctly. No need to reply back. I'm just passing this along to you guys.
Thanks.

[NinjaTrader_ChelseaB]

Hello zacharydw00,

It appears you have some invalid code.

Negative values are not allowed for barsAgo indexes.

Draw.Ray(this, "AskLine", false, -2, dblAsk, -3, dblAsk, bshAskLine, DashStyleHelper.Solid, 2);

You will need to change the code so that only positive values are used for barsAgo indexes with Draw methods.

See the forum threads below which have details.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/1116575-plot-forward#post1116611

https://ninjatrader.com/support/forum/forum/ninjatrader-8/platform-technical-support-aa/108356-drawn-lines-appear-in-different-locations-in-different-time-frames/page3#post836072

[zacharydw00]

It appears you have some invalid code.
Negative values are not allowed for barsAgo indexes.

Hi ChelseaB,
As I stated in the first post the indicator works correctly except for that one incident. And, as these screenshots show negative values work just fine.


Side note, I wanted to attach a video to show the indicator works fine using negative numbers, but the site didn't allow that. That would be helpful if this site would allow that in the future.

Regards,
Zac

[NinjaTrader_ChelseaB]

Hello Zac,

Using is negative indexes is not supported by NinjaTrader.

I recommend you change the code and only use positive barsAgo values.