some NT7.0 overrides in NT 8.0

[ableyfan]

Hi,

In NT7.0, my indicator used override Plot(..) to change bar color according to ChartControl.ChartStyle.ChartType. But in NT 8.0, either Plot(..) is gone, or ChartControl.ChartStyle.ChartType is no longer available. I tried to find alternative but couldn't success. Could someone tell me how to get a plot override, and get ChartStyle property?

Thank you!

[NinjaTrader_JessicaP]

Hello ableyfan,

Thank you for your post.

The name is now OnRender(), you can find information at the following link: http://ninjatrader.com/support/helpG...s/onrender.htm

ChartControl still exists, but has been modified. The documentation for ChartControl is here,

http://ninjatrader.com/support/helpGuides/nt8/en-us/chartcontrol.htm

[ableyfan]

Hi Jessica,

Thanks for the help! I was able to locate OnRender, And about ChartStyleType, I see it could be retrieved from chartControl.BarsArray[0].Properties.ChartStyleType. Is this the correct approach? Seems BarsArray is for multiple charts, I used [0] for the single chart situation. Or there is another one for single chart only?

Thank you!

[ableyfan]

I found there is property of ChartBars, I guess that's for single data serial chart.

Another question, where did BarColor, CandleOutLineColor, BarColorSeries and CandleOutlineColorSeries go?

Thank you!

[NinjaTrader_JessicaP]

With respect to BarsArray, you are very close; this is actually designed for a single chart already, but for multiple data series. Many data series have plural versions that allow you to pull in data for multi- data series charts. For example, Close and Closes[0] refer to the same data series. This page has more information on the topic.

http://ninjatrader.com/support/helpGuides/nt8/en-us/multi-time_frame__instruments.htm

The singular form of BarsArray is simply Bars; Bars and BarsArray[0] refer to the same series. You can learn more about Bars here,

http://ninjatrader.com/support/helpGuides/nt8/en-us/bars.htm

This said, I would recommend as a habit using the BarsArray[0] form that you did use, since Bars <-> BarsArray does not follow the same singular / plural name convention that e.g. Open, High, Low, or Close (which become Opens, Highs, Lows, and Closes, respectively) follow. This is just a policy that has made it easier on me as a programmer to keep everything straight in my head as I write code. If Bars makes more sense to you, you should use that instead.

With respect to Colors, these have become C# Brushes. This link will have information as far as working with Brushes.

http://ninjatrader.com/support/helpGuides/nt8/en-us/?working_with_brushes.htm

[ableyfan]

Yeah, I used wrong terms. When I said "multiple charts" it should be "multiple data series". I suppose you mean ChartBars is for single data serial (primary) and BarsArrays for multiples.

I still couldn't find brushes for bar color. The closest one I can get is ChartBars.Properties.ChartStyle. There are up/down brush for different condition colors. If I change them, will the bar be painted in the color set? Where is candle outline color? How about other chart style (such as OHLC) color brushes?

Thank you!

[NinjaTrader_JessicaP]

Most of the built-in Colors in NT7 exist as SolidColorBrushes in NT8. For example, Colors.ForestGreen is Brushes.ForestGreen.

As far as the other members you mentioned

• BarColor becomes BarBrush
• CandleOutLineColor becomes CandleOutlineBrush
• BarColorSeries becomes BarBrushes
• CandleOutlineColorSeries becomes CandleOutlineBrushes

[ableyfan]

Most of the built-in Colors in NT7 exist as SolidColorBrushes in NT8. For example, Colors.ForestGreen is Brushes.ForestGreen.

As far as the other members you mentioned

• BarColor becomes BarBrush
• CandleOutLineColor becomes CandleOutlineBrush
• BarColorSeries becomes BarBrushes
• CandleOutlineColorSeries becomes CandleOutlineBrushes

Great! I found them. Thanks for the help!