[R] Replace a dot in a string (".") with a space (" ")

Bert Gunter bgunter.4567 at gmail.com
Sat Nov 19 02:35:22 CET 2016

Well of course. See ?regexp where it says:

"The period . matches any single character. "

(Always a good idea to read man pages, although this *is* a complex one)

Setting the fixed argument to TRUE  is one way to get what you want
(there are others).

> sub(".", " ", "c.t",fixed=TRUE)
[1] "c t"


Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Fri, Nov 18, 2016 at 4:13 PM, John <miaojpm at gmail.com> wrote:
> Hi,
>    Is there any function that replaces a dot with a space? I expect "c t"
> from the output of the second call of function sub, but it did not do so.
>> sub("a", "b", "cat")
> [1] "cbt"
>> sub(".", " ", "c.t")
> [1] " .t"
> Thanks!
>         [[alternative HTML version deleted]]
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