Split a string of numbers and return as numeric vector

The purpose of this function is combine the functionality of strsplit, unlist and as.numeric, which are often used together.

Usage

strsplit.num(x, split, fixed = FALSE, perl = FALSE, useBytes = FALSE)

Arguments

x

character vector, each element of which is to be split. Other inputs, including a factor, will give an error.

split

character vector

fixed

logical. If TRUE match split exactly, otherwise use regular expressions. Has priority over perl.

perl

logical. Should Perl-compatible regexps be used?

useBytes

logical. If TRUE the matching is done byte-by-byte rather than character-by-character, and inputs with marked encodings are not converted.

Value

numeric values based on split string

Details

Given a sting, split by a separator into numbers

Examples

# Example 1
# string of numbers with separator " "
num.01 = "5 3 2 3 5 2 33 23 5 32 432 42 23 554"

# split a string of numbers and return as numeric
strsplit.num(num.01, split = " ")
#>  [1]   5   3   2   3   5   2  33  23   5  32 432  42  23 554


# Example 2
# string of numbers with separator "|||"
num.02 = "0|||1|||4|||43|||6|||8|||00||| 1||| 0 1||| T |||F|||TRUE |||f"

# split a string of numbers and return as numeric
strsplit.num(num.02, split = "[|||]")
#> Warning: NAs introduced by coercion
#>  [1]  0 NA NA  1 NA NA  4 NA NA 43 NA NA  6 NA NA  8 NA NA  0 NA NA  1 NA NA NA
#> [26] NA NA NA NA NA NA NA NA NA NA NA NA