public NDArray this[string slice]
{
get
{
var s = new Slice(slice);
s.Start = s.Start.HasValue ? s.Start.Value : 0;
s.Stop = s.Stop.HasValue ? s.Stop.Value : shape[0];
var nd = new NDArray(Array, new int[] { s.Length.Value }.Concat(Shape.GetShape(shape, 0)).ToArray());
nd.Storage.Slice = s;
return(nd);
}
set
{
throw new NotImplementedException("slice data set is not implemented.");
}
}
private NDArray setValue <T>(NDArray indexes)
{
Shape newShape = new int[] { indexes.size }.Concat(shape.Skip(1)).ToArray();
var buf = Data <T>();
var idx = indexes.Data <int>();
var array = new T[newShape.Size];
var indice = Shape.GetShape(newShape.Dimensions, axis: 0);
var length = Shape.GetSize(indice);
for (var row = 0; row < newShape[0]; row++)
{
var d = buf.AsSpan(idx[row] * length, length);
d.CopyTo(array.AsSpan(row * length));
}
var nd = new NDArray(array, newShape);
return(nd);
}