Extract only words containing ASCII characters from vector of strings

Question

I'm stuck with it, so, please, any advice is welcome.

b <- str_extract_all(c('hello ringпрг','trust'), regex("[a-z]+", TRUE))

Returns a list:

    List of 2
 $ : chr [1:2] "hello" "ring"
 $ : chr "trust"

But I want to have a vector with strings of this words for each element of vector c('hello ringпрг','trust') such as "hello ring", "trust". Any other functions and packages are welcome too.

There is no way to only extract English words without a dictionary. Now, if you actually want to extract ASCII characters ... — Roland, Dec 22 '16 at 06:18

score 2 · Answer 1 · answered Dec 22 '16 at 06:09

2

We can use

unlist(str_extract_all(c('hello ringпрг','trust'), regex("[A-Za-z ]+", TRUE)))
#[1] "hello ring" "trust"

Or use the pattern as "[[:ascii:]]+"

answered Dec 22 '16 at 06:09

akrun

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score 2 · Accepted Answer · answered Dec 22 '16 at 06:11

2

Use sapply with paste as in:

b<-str_extract_all(c('hello ringпрг','trust'), regex("[a-z]+", TRUE))

sapply(b, paste, collapse = " ")

## [1] "hello ring" "trust"

answered Dec 22 '16 at 06:11

Tyler Rinker

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Extract only words containing ASCII characters from vector of strings

2 Answers2