R help - Dec 2010 - Selecting non-empty elements after strsplit of string

Hello, 

I am attempting to manipulate strings in which there are differing amounts of
whitespace before and after each element taht I want to keep (any word, letter,
or number). However, after strsplit and unlist, I know how to select specific
elements with "[ ]", but I want to select instead all elements that
are not missing. That is, do not select any elements that are simply
"".

output <- c("a     b   8888      6")

gsub(" ","",unlist(strsplit(output," 
",fixed=TRUE)))
[1] "a"    ""     "b"    "8888"
""     ""     "6"

Thanks! Scott Chamberlain
	[[alternative HTML version deleted]]

Hello,

I am attempting to manipulate strings in which there are differing amounts
of whitespace before and after each element taht I want to keep (any word,
letter, or number). However, after strsplit and unlist, I know how to select
specific elements with "[ ]", but I want to select instead all
elements that
are not missing. That is, do not select any elements that are simply
"".

output <- c("a     b   8888      6")

gsub(" ","",unlist(strsplit(output," 
",fixed=TRUE)))
[1] "a"    ""     "b"    "8888"
""     ""     "6"

Thanks! Scott Chamberlain

	[[alternative HTML version deleted]]

unlist(strsplit(output," +"))


On Tue, Dec 14, 2010 at 2:09 PM, Scott Chamberlain
<myrmecocystus at gmail.com> wrote:
> Hello,
>
> I am attempting to manipulate strings in which there are differing amounts
of whitespace before and after each element taht I want to keep (any word,
letter, or number). However, after strsplit and unlist, I know how to select
specific elements with "[ ]", but I want to select instead all
elements that are not missing. That is, do not select any elements that are
simply "".
>
> output <- c("a ? ? b ? 8888 ? ? ?6")
>
> gsub(" ","",unlist(strsplit(output,"
?",fixed=TRUE)))
> [1] "a" ? ?"" ? ? "b" ? ?"8888"
"" ? ? "" ? ? "6"
>
> Thanks! Scott Chamberlain
> ? ? ? ?[[alternative HTML version deleted]]
>
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