R help - Jul 2011 - How unzip all files?

Hi
I'm starting to use R in windows. I need unzip some files. Each of them are
in different folders and subfolders. Names of folders have the same
beginning of the name. [example:( ~ / M_ /P_ (...)/ (...)R(...)/*.zip)] I do
not know the expression (character) necessary to call this direction and to
unzip files are in each subfolder.
Thank you.

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On 11.07.2011 10:49, AnaA wrote:
> Hi
> I'm starting to use R in windows. I need unzip some files. Each of them
are
> in different folders and subfolders. Names of folders have the same
> beginning of the name. [example:( ~ / M_ /P_ (...)/ (...)R(...)/*.zip)] I
do
> not know the expression (character) necessary to call this direction and to
> unzip files are in each subfolder.
I'd start to list the files as in (all untested!):

files <- list.files(path = "~/M_", recursive=TRUE, full.names=TRUE)
files <- grep("/P_/.*/.*R.*/.*\\.zip$", files, value=TRUE)

and then iterate over files and run unzip() on each file in files with 
an appropriate exdir, e.g.:

sapply(files, function(i) unzip(i, exdir=gsub("\\.zip$", "",
i))


Uwe Ligges


> Thank you.
>
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>
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Hi,

Im not really sure what you mean.  but if you are just wanting to unzip
files, wouldnt it be easier to unzip them using internet explorer (ie right
click on the file and select extract all from one the heading in the list i
think).  Then read them into R?  Im not sure if this is what you mean so
sorry if it isnt useful...

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