On 3/19/2009 2:30 PM, Li, Xuejun wrote:> Hello everyone,
>
>
>
> Can anyone give me some hint/suggestion for unzipping a file in R? The
> help file for "zip.file.extract" function seems to be difficult
to
> understand.
>
>
>
> For example, the name of my zip file is "refGene.txt.gz", which
is
> located in "C:\Documents and Settings\Desktop\test1". I would
like to
> unzip this file to the same directory.
That seems fairly unlikely to be a zip file; it looks like a gzip file,
based on the extension.
zip.file.extract is for zip archives. The closest equivalent in the
gzip world is a .tar.gz file.
I don't know if there is a built-in gunzip function, but you can call a
system function using system().
Duncan Murdoch
>
>
>
> Here's the syntax from the help file,
>
>
>
> zip.file.extract(file, zipname = "R.zip", unzip =
getOption("unzip"))
>
> What I should use for the "file" and the "zipname"
arguments? I tried
> different ways, but none of them is working. Thank you!
>
> Best regards,
>
> Arthur
>
>
>
>
>
>
>
> Arthur Xuejun Li
>
> City of Hope Comprehensive Cancer Center
>
> Department of Information Science
>
> 1500 East Duarte Road
>
> Duarte, CA 91010 - 3000
>
> Ph: (626) 256-4673 ext. 65121
>
> Fax: (626) 471-7106
>
>
>
>
>
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