Read big text files column by column, sometimes much bigger than available RAM, into R.

Documentation for package ‘colbycol’ version 0.8

colbycol-package	Reads data text files in a memory efficient way
as.data.frame	Creates a data.frame from a colbycol object after possibly filtering either rows or columns
as.data.frame.colbycol	Creates a data.frame from a colbycol object after possibly filtering either rows or columns
cbc.get.col	Reads a single column from the original file into memory
cbc.load	Save and load colbycol objects saved on disk
cbc.read.table	Reads a huge text file and creates a colbycol object
cbc.save	Save and load colbycol objects saved on disk
cbc.test.data	Simple test data
colbycol	Reads data text files in a memory efficient way
colnames	Lists the column names in a colbycol object
colnames.colbycol	Lists the column names in a colbycol object
colnames.default	Lists the column names in a colbycol object
ncol	Returns the number of rows/cols in a colbycol object
ncol.colbycol	Returns the number of rows/cols in a colbycol object
ncol.default	Returns the number of rows/cols in a colbycol object
nrow	Returns the number of rows/cols in a colbycol object
nrow.colbycol	Returns the number of rows/cols in a colbycol object
nrow.default	Returns the number of rows/cols in a colbycol object
summary.colbycol	Returns the number of rows/cols in a colbycol object