XFN_Instantaneous XFN_EachSample false true false false : IFunction { // The class must have an Execute method public void Execute(IExecutionContext executionContext) { var functionInput = executionContext.FunctionInput; var functionOutput = executionContext.FunctionOutput; // Find out how many samples you need to work on in this step var timestampsCount = functionInput.Timestamps.Length; // Lookup the input and output parameter indexes by name in the parameter collection var InputParameterIndex = functionInput.InputParameterIndexes["InputParameter full identifier e.g. vCar:Chassis"]; var OutputParameterIndex = functionOutput.OutputParameterIndexes["OutputParameter full identifier e.g. vCarX2:FunctionParameters"]; // Get the input parameter values and an alias to the output parameter values var InputParameter = functionInput.Values[InputParameterIndex]; var OutputParameter = functionOutput.OutputParametersValues[InputParameterIndex]; // Iterate over the samples for (var i = 0; i < timestampsCount; i++) { // Get each parameter value var InputParameterValue = InputParameter[i]; // Perform an operation on it (multiply by 2.0) and assign the calculated value to the output parameter OutputParameter[i] = InputParameterValue * 2.0; } } } ]]>