R: Extract numbers from a string.

extract_numbers {filesstrings}

R Documentation

Extract numbers from a string.

Description

See strex::str_extract_numbers().

Usage

extract_numbers(string, decimals = FALSE, leading_decimals = decimals,
  negs = FALSE, sci = FALSE, commas = FALSE,
  leave_as_string = FALSE)

str_extract_numbers(string, decimals = FALSE,
  leading_decimals = decimals, negs = FALSE, sci = FALSE,
  commas = FALSE, leave_as_string = FALSE)

nth_number(string, n, decimals = FALSE, leading_decimals = decimals,
  negs = FALSE, sci = FALSE, commas = FALSE,
  leave_as_string = FALSE)

str_nth_number(string, n, decimals = FALSE,
  leading_decimals = decimals, negs = FALSE, sci = FALSE,
  commas = FALSE, leave_as_string = FALSE)

first_number(string, decimals = FALSE, leading_decimals = decimals,
  negs = FALSE, sci = FALSE, commas = FALSE,
  leave_as_string = FALSE)

str_first_number(string, decimals = FALSE, leading_decimals = decimals,
  negs = FALSE, sci = FALSE, commas = FALSE,
  leave_as_string = FALSE)

last_number(string, decimals = FALSE, leading_decimals = decimals,
  negs = FALSE, sci = FALSE, commas = FALSE,
  leave_as_string = FALSE)

str_last_number(string, decimals = FALSE, leading_decimals = decimals,
  negs = FALSE, sci = FALSE, commas = FALSE,
  leave_as_string = FALSE)

Arguments

`string`	A string.
`decimals`	Do you want to include the possibility of decimal numbers (`TRUE`) or not (`FALSE`, the default).
`leading_decimals`	Do you want to allow a leading decimal point to be the start of a number?
`negs`	Do you want to allow negative numbers? Note that double negatives are not handled here (see the examples).
`sci`	Make the search aware of scientific notation e.g. 2e3 is the same as 2000.
`commas`	Allow comma separators in numbers (i.e. interpret 1,100 as a single number (one thousand one hundred) rather than two numbers (one and one hundred)).
`leave_as_string`	Do you want to return the number as a string (`TRUE`) or as numeric (`FALSE`, the default)?
`n`	A vector of integerish values. Must be either length 1 or have length equal to the length of `string`. Negative indices count from the back: while `n = 1` and `n = 2` correspond to first and second, `n = -1` and `n = -2` correspond to last and second-last. `n = 0` will return `NA`.

[Package filesstrings version 3.1.0 Index]