big_write {bigstatsr} R Documentation

## 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())



[Package bigstatsr version 1.5.6 Index]