[BioC] A question about the Marray Package
ramasamy at cancer.org.uk
Wed Jul 13 11:55:04 CEST 2005
There is no function called 'dir' in the marray package. Note that it is
the "marray" package not the "Marray". R is case sensitive.
I think the following should suffice
fname <- list.files( path=datadir, pattern="\\.spot" )
BTW, dir() is an alias for list.files() and I prefer to use the latter
as I think it has a clearer meaning.
On Tue, 2005-07-12 at 16:12 -0500, Tony Kowal wrote:
> 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 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 at northwestern.edu
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