Construct an AlignedDataFrame from a data frame and its
metadata
AlignedDataFrame(data, metadata, nrow = nrow(data))data,
and with number of rows of metadata corresponding to number
of columns of data. . The data frame must contain a column
labelDescription providing a verbose description of each
column of data.data is not
provided, to construct an AlignedDataFrame with the specified number
of rows.AlignedDataFrame.