R remove non-alphanumeric symbols from a string

Question

I have a string and I want to remove all non-alphanumeric symbols from and then put into a vector. So this:

\"This is a string.  In addition, this is a stri         


        

Answer 1

here is an example:

> str <- "This is a string. In addition, this is a string!"
> str
[1] "This is a string. In addition, this is a string!"
> strsplit(gsub("[^[:alnum:] ]", "", str), " +")[[1]]
 [1] "This"     "is"       "a"        "string"   "In"       "addition" "this"     "is"       "a"       
[10] "string"