next_block-methods

next_block

Reads the next block of lines from a file. The method returns a
  <code>data.frame</code>. The first line in the <code>data.frame</code> is the line
  corresponding to the current line in the file. When the end of the file is
  reached a <code>data.frame</code> with zero rows is returned. This can be used to
  check whether the end of the file is reached.

methods

The LaF package provides 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.

next_block-methods: Read the next block of data from a file.

Description

Arguments