Extracts a named element from a list of lists.
asMatrixCols(xs, row.names, col.names)asMatrixRows(xs, row.names, col.names)
[matrix
].
[list
]
A list of vectors of the same length.
[character
| integer
| NULL
]
Row names of result.
Default is to take the names of the elements of xs
.
[character
| integer
| NULL
]
Column names of result.
Default is to take the names of the elements of xs
.