Hi All, 

I am trying to read in microarray data from a two-color platform using the Marray package.  One of
the commands that I have used to read in data (with R 2.0 and R2.01) is not working for me with
R2.1.  I was wondering if anyone has encountered this problem, and can tell me how to fix the
problem.  Thanks very much in advance for your help.

I use the "fnames" command to specify that I wish to read in a SPOT file: 

> fnames <- dir(path = datadir, pattern = paste("*", "spot", sep = "."))

and I receive the following error message: 

Error in list.files(path, pattern, all.files, full.names, recursive) : 
        invalid 'pattern' regular expression

As I mentioned, the fnames command as I typed above has worked in earlier versions of R, but seems
to be a problem with R2.1.  

I am using a PC running Windows XP, R2.1.

Thanks -
Tony

Tony Kowal
Graduate Student
Rex Chisholm Laboratory

Northwestern University
303 E. Superior 
Lurie Building
Room 7-250
Chicago, IL 60611

Lab: 312 503 4169
e-mail: askowal@northwestern.edu

