/// <summary>
/// Create a new dataset with a given `name` under this group.
/// An attempt to write a readonly-file will throw an `InvalidOperationException`.
/// </summary>
public H5DataSet CreateDataset(string name, int rank, long[] dims, Type primitive, long[] maxdims = null)
{
if (!IsWritable)
{
throw new InvalidOperationException("trying to write a readonly file");
}
return(H5DataSet.Create(ID, name, rank, dims, maxdims, primitive));
}
/// <summary>
/// Retrieve the `H5DataSet` located by the `key` relative to this Group.
/// The type of dataset returned depends on the actual datatype under
/// the `key`. A non-existing `key` throws a `KeyNotFoundException`.
/// </summary>
/// <remarks>
/// In order to use the object, an explicit cast to one of the generic
/// datasets is necessary. Beware of casting as it might throw an
/// `InvalidCastException`.
/// </remarks>
/// <example>
/// <code>
/// H5Group root = h5file.Root;
/// double2d dset = (double2d)root["level1/doubleset"];
/// string1d names = root["level1/names"] as string1d;
/// if (names == null)
/// throw new ApplicationException("no such dataset: level1/names!");
/// </code>
/// </example>
public H5DataSet this[string key]
{
get
{
if (key.StartsWith("/") || key.EndsWith("/") || !H5Link.Exists(ID, key))
{
throw new KeyNotFoundException(key);
}
if (!H5Link.Exists(ID, key))
{
throw new KeyNotFoundException(key);
}
return(H5DataSet.FromID(H5DataSet.Open(ID, key)));
}
}
