• pd.DataFrame(NDArray data, IList<string> index, IList<string> columns, Type dtype)
• pd.DataFrame<TIndex>(NDArray data, IList<TIndex> index, IList<string> columns, Type dtype)
• pd.DataFrame(IDictionary<string, NDArray> data, IList<string> index)
• pd.DataFrame<TIndex>(IDictionary<string, NDArray> data, IList<TIndex> index)

• pd.Series(NDArray data)
• pd.Series(Array data)
• pd.Series<T>(T data)

s.iloc[0]: Select data by index

s.loc["index_label"]： Select data by index label

df[0]： Select data by column index （returns Series）

df[params int[] columnIndexs] : Select data by column index （returns DataFrame）

df["column_label"]： Select data by column label （returns Series）; accessible set accessor increase column （if the column label does not exist）

df[params string[] columnLabels]： Select data by column label （returns DataFrame）

df.Column(string columnLabel, NDArray value): Set the column and its value; create when the column does not exist

df.Column(int columnIndex, NDArray value): Set the column and the value of the column; when the column does not exist, an exception is reported

df[Slice s]: Row slice selection data

df.loc["index_label"]： Select data by row index label

df.loc["index_label", "column_label"]： Select data by row and column labels

df.iloc[0]： Index by row （row number） select data

• MIT License