Opc.Ua.Server.AverageAggregateCalculator.ComputeAverage C# (CSharp) Method

        protected DataValue ComputeAverage(TimeSlice slice)
        {
            // get the values in the slice.
            List<DataValue> values = GetValues(slice);

            // check for empty slice.
            if (values == null || values.Count == 0)
            {
                return GetNoDataValue(slice);
            }

            // calculate total and count.
            int count = 0;
            double total = 0;

            for (int ii = 0; ii < values.Count; ii++)
            {
                if (StatusCode.IsGood(values[ii].StatusCode))
                {
                    try
                    {
                        double sample = CastToDouble(values[ii]);
                        total += sample;
                        count++;
                    }
                    catch
                    {
                        // ignore conversion errors.
                    }
                }
            }

            // check for empty slice.
            if (count == 0)
            {
                return GetNoDataValue(slice);
            }

            // select the result.
            double result = total/count;

            // set the timestamp and status.
            DataValue value = new DataValue();
            value.WrappedValue = new Variant(result, TypeInfo.Scalars.Double);
            value.SourceTimestamp = GetTimestamp(slice);
            value.ServerTimestamp = GetTimestamp(slice);
            value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
            value.StatusCode = GetValueBasedStatusCode(slice, values, value.StatusCode);

            // return result.
            return value;
        }