indexing: Read records from a large file object into R

In LaF: Fast Access to Large ASCII Files

Read records from a large file object into R

Description

When a connection is opened to a "laf" object; this object can then be indexed roughly as one would a data.frame.

Usage

## S4 method for signature 'laf'
x[i, j, drop]

## S4 method for signature 'laf_column'
x[i, j, drop]

Arguments

x	an object of type "laf" or "laf_column".
i	an logical or numeric vector with indices. The rows which should be selected.
j	a numeric vector with the columns to select.
drop	a logical indicating whether or not to convert the result to a vector when only one column is selected. As in when indexing a data.frame.

LaF documentation built on April 4, 2025, 5:47 a.m.