/// <summary>
/// Returns a sample.
/// </summary>
public IDataFrameView Sample(int nrows = 5, bool distinct = false, IRandom rand = null)
{
nrows = Math.Min(Length, nrows);
return(new DataFrameView(this, DataFrameRandom.RandomIntegers(nrows, Length, distinct, rand), null));
}
/// <summary>
/// Returns a sample.
/// </summary>
public IDataFrameView Sample(int nrows = 5, bool distinct = false, IRandom rand = null)
{
nrows = Math.Min(Length, nrows);
return(new DataFrameView(_src, DataFrameRandom.RandomIntegers(nrows, Length, distinct, rand).Select(c => _rows[c]).ToArray(), _columns));
}