frk_read_delim: Read flat file knowing nothing about them

In Athospd/forkliftr: Smart Set of Tools to Stack Tabular Files

Description

This is a wrapper for readr::read_delim() that guesses the main arguments, namely delim, quote, col_names, encoding, decimal_mark, grouping_mark, and skip.

Usage

frk_read_delim(file, delim = guess_delim(file, guess_max)$char[1],
  quote = guess_quote(file, guess_max), escape_backslash = FALSE,
  escape_double = TRUE, col_names = guess_has_header(file, guess_max),
  col_types = NULL, locale = readr::locale(encoding = guess_encoding(file,
  guess_max)$encoding[1], decimal_mark = guess_decimal_mark(file, guess_max),
  grouping_mark = guess_grouping_mark(file, guess_max)), na = c("", "NA"),
  quoted_na = TRUE, comment = "", trim_ws = TRUE,
  skip = guess_skip(file, guess_max), n_max = Inf, guess_max = min(10,
  n_max))

Arguments

file	Path to file
delim	(Guessed) Delimiter of file
quote	(Guessed) Character used to quote strings
escape_backslash	Whether backslashed are used to escape special characters
escape_double	Whether quotes are escaped by doubling them
col_names	(Guessed) Whether file has column names or vector with column names
col_types	Vector with types to be forced on columns or NULL for guess
locale	(Guessed) Some region-dependent information
na	String or character vector to use for missing values
quoted_na	Whether missing values can be quoted
comment	String that indicates comments
trim_ws	Whether to trim whitespace from each field
skip	(Guessed) Number of lines to skip before reading data
n_max	Maximum number of records to read
guess_max	Maximum number of records to use for guess

See Also

readr::read_delim(), readr::locale()

Examples

## Not run: 
# Create sample file
file <- tempfile()
write.table(
  dplyr::storms, file, sep = "|", dec = ",",
  col.names = TRUE, row.names = FALSE)

# Read file
tbl <- frk_read_delim(file)
glimpse(tbl)

## End(Not run)

Athospd/forkliftr documentation built on May 14, 2019, 9:42 a.m.