big_write: Write an FBM to a file

In bigstatsr: Statistical Tools for Filebacked Big Matrices

Write an FBM to a file

Description

Write a file from a Filebacked Big Matrix (by parts).

Usage

big_write(
  X,
  file,
  every_nrow,
  ...,
  ind.row = rows_along(X),
  ind.col = cols_along(X),
  progress = FALSE
)

Arguments

X	An object of class FBM.
file	File to write to.
every_nrow	Number of rows to write at once.
...	Other arguments to be passed to data.table::fwrite, except x, file, append, row.names, col.names and showProgress.
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.
progress	Show progress? Default is FALSE.

Value

Input parameter file, invisibly.

Examples

X <- big_attachExtdata()
csv <- big_write(X, tempfile(), every_nrow = 100, progress = interactive())

bigstatsr documentation built on Sept. 11, 2024, 7:08 p.m.