problem with dir() in R-2.1.0?
The new version of R has begun enforcing rules on regular expressions. Your pattern is not a valid regular expression, hence it no longer works. The meaning of '*' is with respect to a preceding character, hence it is ill-defined without one.
On Mon, 25 Apr 2005, Ye, Bin wrote:
Hi,
I always use dir(pattern="*.RData") in all the earlier version of R (1.8, 1.9, 2.0.1).
Error messege is as below:
Error in list.files(path, pattern, all.files, full.names, recursive) :
invalid 'pattern' regular expression
Does anyone have an idea what's going on? How should I define the pattern I need in R-2.1.0?
Thanks!
Bin
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