How to find the length of a string in R

r string unicode string-length
Igor Chubin picture Igor Chubin · Jun 21, 2012 · Viewed 341.8k times · Source

How to find the length of a string (number of characters in a string) without splitting it in R? I know how to find the length of a list but not of a string.

And what about Unicode strings? How do I find the length (in bytes) and the number of characters (runes, symbols) in a Unicode string?

Related Question:

Answer

Gavin Simpson picture Gavin Simpson · Jun 21, 2012

See ?nchar. For example:

> nchar("foo")
[1] 3
> set.seed(10)
> strn <- paste(sample(LETTERS, 10), collapse = "")
> strn
[1] "NHKPBEFTLY"
> nchar(strn)
[1] 10

Related questions

Test if characters are in a string

I'm trying to determine if a string is a subset of another string. For example: chars <- "test" value <- "es" I want to return TRUE if "value" appears as part of the string "chars". In the following …

Read More
Split data frame string column into multiple columns

I'd like to take data of the form before = data.frame(attr = c(1,30,4,6), type=c('foo_and_bar','foo_and_bar_2')) attr type 1 1 foo_and_bar 2 30 foo_and_bar_2 3 4 foo_and_bar 4 6 foo_and_bar_2 and use split() on …

Read More
Converting string to numeric

I've imported a test file and tried to make a histogram pichman <- read.csv(file="picman.txt", header=TRUE, sep="/t") hist <- as.numeric(pichman$WS) However, I get different numbers from values in my dataset. …

Read More