big_copy | R Documentation |
Deep copy of a Filebacked Big Matrix with possible subsetting. This should also work for any matrix-like object.
big_copy( X, ind.row = rows_along(X), ind.col = cols_along(X), type = typeof(X), backingfile = tempfile(tmpdir = getOption("FBM.dir")), block.size = block_size(length(ind.row)), is_read_only = FALSE )
X |
Could be any matrix-like object. |
ind.row |
An optional vector of the row indices that are used. If not specified, all rows are used. Don't use negative indices. |
ind.col |
An optional vector of the column indices that are used. If not specified, all columns are used. Don't use negative indices. |
type |
Type of the Filebacked Big Matrix (default is
|
backingfile |
Path to the file storing the Big Matrix on disk. An extension ".bk" will be automatically added. Default stores in the temporary directory. |
block.size |
Maximum number of columns read at once. Default uses block_size. |
is_read_only |
Whether the FBM is read-only? Default is |
A copy of X
as a new FBM object.
X <- FBM(10, 10, init = 1:100) X[] X2 <- big_copy(X, ind.row = 1:5) X2[] mat <- matrix(101:200, 10) X3 <- big_copy(mat, type = "double") # as_FBM() would be faster here X3[] X.code <- big_attachExtdata() class(X.code) X2.code <- big_copy(X.code) class(X2.code) all.equal(X.code[], X2.code[])
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.