please help how can I transfer raw numbers?

[mfingstar]

my code:

double[] input = { 0.1, 1.5, 2.2, 0.4, -0.3 }; var data = NumpyArrayFactory.From(input); var scaler = new MinimumMaximumScaler(); var output = scaler.Transform(data); // says: "Object reference not set to an instance of an object."