R: Fast Access to Large ASCII Files

# Fast Access to Large ASCII Files

## Documentation for package ‘LaF’ version 0.8.4

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

$-method | Select a column from a LaF object
begin | Go to the beginning of the file
begin-method | Go to the beginning of the file
close-method | Close the connection to the Large File
colfreq | Calculate simple statistics of column
colfreq-method | Calculate simple statistics of column
colmean | Calculate simple statistics of column
colmean-method | Calculate simple statistics of column
colnmissing | Calculate simple statistics of column
colnmissing-method | Calculate simple statistics of column
colrange | Calculate simple statistics of column
colrange-method | Calculate simple statistics of column
colsum | Calculate simple statistics of column
colsum-method | Calculate simple statistics of column
current_line | Get the current line in the file
current_line-method | Get the current line in the file
detect_dm_csv | Automatically detect data models for CSV-files
determine_nlines | Determine number of lines in a text file
get_lines | Read in specified lines from a text file
goto | Go to specified line in the file
goto-method | Go to specified line in the file
laf-class | Large File object
laf_column-class | Column of a Large File Object
laf_open | Create a connection to a file using a data model.
laf_open_csv | Create a connection to a comma separated value (CSV) file.
laf_open_fwf | Create a connection to a fixed width file.
levels-method | Get and change the levels of the column in a Large File object
levels<--method | Get and change the levels of the column in a Large File object
names-method | Get and set the names of the columns in a Large File object
names<--method | Get and set the names of the columns in a Large File object
ncol-method | Get the number of columns in a Large File object
next_block | Read the next block of data from a file.
next_block-method | Read the next block of data from a file.
nrow-method | Get the number of rows in a Large File object
process_blocks | Blockwise processing of file
process_blocks-method | Blockwise processing of file
read_dm | Read and write data models for LaF
read_dm_blaise | Read in Blaise data models
read_lines | Read lines from the file
read_lines-method | Read lines from the file
sample_lines | Read in random lines from a text file
show-method | Print the Large File object to screen
write_dm | Read and write data models for LaF
[-method | Read records from a large file object into R
[[-method | Select a column from a LaF object