laf_column-class

Representation of a column in a Large File object. This class itself is a
subclass of the class <code>laf</code>. In principle all methods that can be used
with a <code>laf</code> object can also be used with a <code>laf_column</code> object
except the the <code>column</code> or <code>columns</code> arguments of these methods are
not needed.

Methods for fast access to large ASCII files.  Currently the
following file formats are supported: comma separated format (CSV) and fixed
width format. It is assumed that the files are too large to fit into memory,
although the package can also be used to efficiently access files that do
fit into memory. Methods are provided to access and process files blockwise.
Furthermore, an opened file can be accessed as one would an ordinary
data.frame. The LaF vignette gives an overview of the functionality
provided.

Jan der Laan

Fast Access to Large ASCII Files

laf_column-class function

Object of this class are usually created by using the <code>$</code> operator on
<code>laf</code> objects.

laf_column-class: Column of a Large File Object

Description

Arguments

Objects from the Class