Last bar on the visible chart

[photog53]

Apologies if this answer exists in the documentation (I looked but couldn't find what I was looking for).

Is there code that will let me find the last 'visible' bar at the far left edge on a chart?
(preferably code that gives me number-of-bars back from CurrentBar).


Thanks.....

[NinjaTrader_RyanM1]

Hello photog53,

Unfortunately there isn't a supported property for this.

[photog53]

....I thought that might be the answer.

Thanks for the quick response....

...(what I wanted to do, was code an indicator that kept my charts "in scale" visually....
When price narrows, Ninja charts expand top-to-bottom and the visual relative size
of the candles becomes misleading. In those circumstances, a 30 tick 6E channel
looks as large as the prior 70tick swing.
If I could plot the last visual bar, then a simple MAX/MIN lookback would let me plot
the range of the visible chart, and then load an AutoScale=true text, line, (or whatever)
at a configurable % above high or below low, which would add whitespace top/bottom
and maintain the desired visual scale.
The indicator would then remove it's plot when price moved back into a larger range.)

I can sort-of do the same thing with a fixed lookback period, but that doesn't keep up if
I change the window size.

Thanks again.....

[NinjaTrader_RyanM1]

Thanks for sharing the details of your project. Hopefully other community members with experience in this area can assist.

[photog53]

I've already coded the indicator, and it works very well. The only issue is that without ability to internally find the 'left edge", the Lookback needs occasional adjustment from chart to chart, or when I adjust window size.....
I can set the chart 'scale' in ticks to a size that is visually representative
of price swing, adding white space top and bottom when price narrows...
and it will reset itself automatically when price resumes a larger price swing.

I may post it on the forum for others.....

[adamus]

Hi,

did you ever find a solution for this?

EDIT: sorry, completely misread the title: I thought it said right-edge.

That's what I'm looking for - an alternative to CurrentBar that tells me which bar is at the right hand edge of the visible chart.

Does that exist in NT7?

[koganam]

Hi,

did you ever find a solution for this?

EDIT: sorry, completely misread the title: I thought it said right-edge.

That's what I'm looking for - an alternative to CurrentBar that tells me which bar is at the right hand edge of the visible chart.

Does that exist in NT7?

ref: http://www.ninjatrader.com/support/f...61631#poststop

[adamus]

That's exactly what I wanted.

CurrentBar - this.LastBarIndexPainted 

Thank you.

The OP here should probably experiment with this.FirstBarIndexPainted

[stockgoblin]

Newb question: What does the "this" refer to? I'm trying to adjust my custome indicator to use the last displayed bar instead of current bar but the compile doesn't like the "this" in:

int intLastBarPaintedOnChart = this.LastBarIndexPainted;

[koganam]

Newb question: What does the "this" refer to? I'm trying to adjust my custome indicator to use the last displayed bar instead of current bar but the compile doesn't like the "this" in:

int intLastBarPaintedOnChart = this.LastBarIndexPainted;

"this" refers to the current instance of the running indicator.

What is the error message that you are getting?

[stockgoblin]

I got it! I was just being too fancy with declaring variables when "this.LastBarIndexPainted" works just fine all by itself. Thank-you for this insight. It makes my custom indicator so much better!!!