Pinscript to Ninja

[nagesh789]

Hello,

I have the following code in Pinescript and having some trouble converting to Ninja. appreciate the help

longcheck = (ema1 - ema1[1]) / ema1[1] * 100
confirmlong = ta.ema(longcheck, 30)

i would think longcheck is singular value but it is returning a series and ema is being extraced off it. i tried similar thing in Ninjascript but it is complaining that longcheck cannot be of type iseries..
the code executes fine in Tradingview

Ninja

longcheck = (ema1[0] - ema1[1]) / ema1[1] * 100 - How can i convert this to an iseries??
confirmlong = EMA(longcheck, 30)

[NinjaTrader_Gaby]

Hello nagesh789,

Thank you for your post.

private Series<double> longcheck;

longcheck[0] = (ema1[0] - ema1[1]) / ema1[1]*100

The EMA takes an ISeries<double> input, so if you want to use longcheck to calculate the EMA, longcheck needs to be an ISeries<double>.

EMA(ISeries<double> input, int period)[int barsAgo]

EMA - https://ninjatrader.com/support/help...onential_e.htm

Please see the Help Guide page below which has a code snippet demonstrating defining, assigning, and using Series<double>.

Series<T> - https://ninjatrader.com/support/help...t8/seriest.htm

Please let me know if you have any other questions.

[nagesh789]

Thanks for the help and that worked. i have a follow up question on HA candles. I'm using HeikenAshi8 indicator in my code and my strategy uses ADX, RSI, EMA etc to generate signals. i tried checking like HeikenAshi8.RSI but it is not making any difference compared to normal candles in the backtest. The signals are appearing at the same place with or without the indicator. There are specific HAClose and Open but my strat doesn't rely on them.

i'm sure i'm doing something wrong here. Can you please provide some guidance on how to calculate RSI etc when using HeikenAshi8?

[NinjaTrader_Gaby]

Hello,

If you're going to be backtesting a Heiken Ashi strategy, you should be aware that Heiken-Ashi candles present false information concerning each candle.


Here is how the Heiken-ashi is calculated:

HAClose = ((Open[0] + High[0] + Low[0] + Close[0]) * 0.25); // Calculate the close

HAOpen = ((HAOpen[1] + HAClose[1]) * 0.5); // Calculate the open

HAHigh = (Math.Max(High[0], HAOpen[0])); // Calculate the high

HALow = (Math.Min(Low[0], HAOpen[0])); // Calculate the low


When you place an order it can only fill on real price data.

The strategy analyzer does not know what the base data is that created the Heiken-Ashi bar and it will backtest based on the false information presented.

A work around, for backtesting in the strategy analyzer, would be to use the indicator HeikenAshi8 in your strategy and use standard bars in the chart/analyzer so that the backtest results are based on real data points and your strategy can use the Heiken-ashi values for your entry conditions


Another option would be to backtest your strategy using the Playback Connection so that the bars may be built more realistically as if they were in real time.

Playback - https://ninjatrader.com/support/help...connection.htm


Please let us know if you have any other questions.