public VarianceAggregator(string f, VarianceAggregatorValueType aggrValueType, object state) : this(f, aggrValueType)
{
var stateArr = state as object[];
if (stateArr == null || stateArr.Length != 3)
{
throw new InvalidOperationException("Invalid state, expected array [uint count, double mean, double M2] where M2=variance*count");
}
count = Convert.ToUInt32(stateArr[0]);
mean = Convert.ToDouble(stateArr[1]);
M2 = Convert.ToDouble(stateArr[2]);
}
public VarianceAggregator(string f, VarianceAggregatorValueType aggrValueType)
{
field = f;
valType = aggrValueType;
}
public VarianceAggregatorFactory(string field, VarianceAggregatorValueType aggrValueType)
{
fld = field;
valueType = aggrValueType;
}
