[R] re ad and check table

From: mysimbaa <adel.tekari_at_sisltd.ch>
Date: Fri, 18 Jul 2008 08:51:40 -0700 (PDT)

Dear R users,
I want to read a file like following :

if it is a table then z <- read.table(pathname, dec=".", header=TRUE) else if it's not a table (image,doc,...) then send an error or something like that

acually I have a read.table in the beginnig of my R code, and if my data is not a table I become in my R console : fail in scan. So the question is how to check the nature of the file? something like : is.table?
I don't know the function.

Thanks for any help

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