Hi,
The XML package has a nice function, parseURI(), that nicely slice and dices
the url.
library(XML)
parseURI('http://www.mdd.com/food/pizza/index.html')
Might that help?
Cheers,
Ben
On Mar 6, 2014, at 12:23 PM, Abraham Mathew <abmathe...@gmail.com> wrote:
> Let's say that I have the following character vector with a series of url
> strings. I'm interested in extracting some information from each string.
>
> url = c("http://www.mdd.com/food/pizza/index.html";, "
> http://www.mdd.com/build-your-own/index.html";,
> "http://www.mdd.com/special-deals.html";, "
> http://www.genius.com/find-a-location.html";,
> "http://www.google.com/hello.html";)
>
> - First, I want to extract the domain name followed by .com. After
> struggling with this for a while, reading some regular expression
> tutorials, and reading through stack overflow, I came up with the following
> solution. Perfect!
>
>> parser <- function(x) gsub("www\\.", "", sapply(strsplit(gsub("http://";,
> "", x), "/"), "[[", 1))
>> parser(url)
> [1] "mdd.com" "mdd.com" "mdd.com" "genius.com" "google.com"
>
> - Second, I want to extract everything after .com in the original url.
> Unfortunately, I don't know the proper regular expression to assign in
> order to get the desired result. Can anyone help.
>
> Output should be
> /food/pizza/index.html
> build-your-own/index.html
> /special-deals.html
>
> If anyone has a solution using the stringr package, that'd be of interest
> also.
>
>
> Thanks.
>
> --
>
> *Abraham Mathew**Analytics Strategist*
> *Minneapolis, MN*
> *720-648-0108*
>
> *abmathe...@gmail.com <abmathe...@gmail.com>*
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