/// <summary>
/// Adds a stats object with another type of stats object. The result
/// should be equivalent, up to the effects of numerical imprecision,
/// as if in addition to all the values this object has seen, it has
/// also seen the values added to the other object.
/// </summary>
/// <param name="s"></param>
public void Add(SummaryStatisticsBase s)
{
double delta = s.Mean - Mean;
double na = Count;
double nb = s.Count;
double nx = na + nb;
if (nb == 0.0)
{
return; // No-op.
}
M2 += s.M2 + delta * delta * na * nb / nx;
Count += s.Count;
Mean += delta * nb / nx;
RawCount += s.RawCount;
NonzeroCount += s.NonzeroCount;
NonzeroWeight += s.NonzeroWeight;
if (Max < s.Max)
{
Max = s.Max;
}
if (Min > s.Min)
{
Min = s.Min;
}
}
public override bool Equals(object obj)
{
SummaryStatisticsBase s = obj as SummaryStatisticsBase;
if (s == null)
{
return(false);
}
return(s.RawCount == RawCount && s.Count == Count &&
s.Mean == Mean && s.M2 == M2 && s.Min == Min &&
s.Max == Max && s.NonzeroCount == NonzeroCount);
}