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

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.

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.