Splitting a file name into name,extension

Question

I have the name of a file like this: name1.csv and I would like to extract two substrings of this string. One that stores the name1 in one variable

Answer 1

Use strsplit():

http://stat.ethz.ch/R-manual/R-devel/library/base/html/strsplit.html

Example:

> strsplit('name1.csv', '[.]')[[1]]
[1] "name1" "csv"  

Note that second argument is a regular expression, that's why you can't just pass single dot (it will be interpreted as "any character").