Fast Access to Large ASCII Files

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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