readr: parse_guess – R documentation

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parse_guess

Parse using the "best" type

Description

parse_guess() returns the parser vector; guess_parser() returns the name of the parser. These functions use a number of heuristics to determine which type of vector is "best". Generally they try to err of the side of safety, as it's straightforward to override the parsing choice if needed.

Usage

parse_guess(
  x,
  na = c("", "NA"),
  locale = default_locale(),
  trim_ws = TRUE,
  guess_integer = FALSE
)

col_guess()

guess_parser(
  x,
  locale = default_locale(),
  guess_integer = FALSE,
  na = c("", "NA")
)

Arguments

`x`	Character vector of values to parse.
`na`	Character vector of strings to interpret as missing values. Set this option to `character()` to indicate no missing values.
`locale`	The locale controls defaults that vary from place to place. The default locale is US-centric (like R), but you can use `locale()` to create your own locale that controls things like the default time zone, encoding, decimal mark, big mark, and day/month names.
`trim_ws`	Should leading and trailing whitespace be trimmed from each field before parsing it?
`guess_integer`	If `TRUE`, guess integer types for whole numbers, if `FALSE` guess numeric type for all numbers.

Examples

# Logical vectors
parse_guess(c("FALSE", "TRUE", "F", "T"))

# Integers and doubles
parse_guess(c("1","2","3"))
parse_guess(c("1.6","2.6","3.4"))

# Numbers containing grouping mark
guess_parser("1,234,566")
parse_guess("1,234,566")

# ISO 8601 date times
guess_parser(c("2010-10-10"))
parse_guess(c("2010-10-10"))

readr

Read Rectangular Text Data

v1.4.0

GPL (>= 2) | file LICENSE

Authors

Hadley Wickham [aut], Jim Hester [aut, cre], Romain Francois [ctb], R Core Team [ctb] (Date time code adapted from R), RStudio [cph, fnd], Jukka Jylänki [ctb, cph] (grisu3 implementation), Mikkel Jørgensen [ctb, cph] (grisu3 implementation)

Initial release