public override IEnumerable <Value> Eval(IEnumerable <Value> args)
{
foreach (Value v in child.Eval(args))
{
if (!(v is Frame))
{
throw new InvalidOperationException("BoxCox only works on frames");
}
Frame f = v as Frame;
Frame r = new Frame();
for (int i = 0; i < f.Columns.Count(); i++)
{
Vector vec = f.Columns[i];
if (!(vec is Numeric))
{
throw new InvalidOperationException("BoxCox only works on numeric variables");
}
Numeric n = vec as Numeric;
List <double> l = evaluate(n.vector).ToList();
r.Columns.Add(new Numeric(l, evaluate(n.Domain)));
r.Symbols.Add(new Symbol(MakeName(f.Symbols[i].Name)));
}
yield return(r);
}
}
public override IEnumerable <Value> Eval(IEnumerable <Value> args)
{
foreach (Value v in lhs.Eval(args))
{
if (!(v is Frame))
{
throw new InvalidOperationException("Formula must get frames");
}
foreach (Frame r in Cross(args, 0))
{
yield return(new ModelFrame(v as Frame, r, labels.Eval(args) as Frame));
}
}
}
