N/A Values

January 10th, 2014, 02:11 PM

I have experienced something weird and don't know how to get around it.

Within Ninja, I am experimenting with a trial version of a third party indicator that plots dots above or below candle at certain important turning points. (trade signals)

The indicator is provided as secured DLL so I cannot really access the internals but intellisense reveal that the name of Data Series responsible for dots is named High.

Using a Cross-cursor when I hover at the candle with dots on it, values of High shown in data box is a valid number (usually Close of candle) and everywhere where no dot is plotted it is shown as N/A.

So, I confidently wrote (expecting it to work first time)

Code

if ( Double.IsNan(ind.High[1]) && !Double.IsNan(ind.High[0]))

unfortunately this did not work. So, I tried

Code

if (!Double.IsNan(ind.High[0]))

This did not work either. Tried few more ideas. CrossAbove, CrossBelow etc etc and nothing worked

After few trials and errors, I tried

Code

if (ind.High[0] > 0)

last returns true for each and every candle.

IsNan is officially documented function in C# to detect numeric fields that do not have data

CannonTrading · January 10th, 2014, 04:40 PM

I have written a few codes for both CQG and sierra charts but not for ninja. My best advice is to contact the vendor of the signals and ask them directly.

January 11th, 2014, 06:40 PM

mastermind007

I have experienced something weird and don't know how to get around it.

Within Ninja, I am experimenting with a trial version of a third party indicator that plots dots above or below candle at certain important turning points. (trade signals)

The indicator is provided as secured DLL so I cannot really access the internals but intellisense reveal that the name of Data Series responsible for dots is named High.
....

IsNan is officially documented function in C# to detect numeric fields that do not have data

The field probably is not actually empty; NT puts dummy values in whenever no actual value is used, and you have to check for that. Try the ContainsValue property of the dataseries. I think this may be your answer.

From the entry on DataSeries Class in the Ninja help file:

Quoting

Checking for Valid Values
It is possible that you may use a DataSeries object but decide not to set a value for a specific bar. However, you should not try to access a DataSeries value that has not been set. Internally, a dummy value does exists, but you want to check to see if it was a valid value that you set before trying to access it for use in your calculations.

DataSeries.ContainsValue(int barsAgo)
Returns a true or false value.

Bob.

N/A Values

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N/A Values