Read a file as a Filebacked Data Frame by using package bigreadr.
FDF_read(file, filter = NULL, backingfile = drop_ext(file), ...)
File to read.
Vector used to subset the rows of each data frame.
Path to the file storing the data frame on disk.
file without its extension.
Arguments passed on to
Number of parts in which to split reading (and transforming).
Parts are referring to blocks of selected columns.
part_size to set a good value.
Number of lines to skip at the beginning of
Indices of columns to keep (sorted). Default keeps them all.
Show progress? Default is
Size of the parts if
nb_parts is not supplied.
500 * 1024^2 (500 MB).
A Filebacked Data Frame.