[R] Regex for ^ (the caret symbol)?

[Rich Shepard]

On Mon, 21 Jan 2013, mtb954 at gmail.com wrote:

> I am trying to search for string that includes the caret symbol, using the
> following code:
> grepl("latitude^2",temp)

   Many regex implementations require us to escape a metacharacter such as
'^' by preceeding it with a backslash. This indicates the next character is
a literal and not, in this case, the beginning of the line. Try \^ in your
statement.

Rich