(This article was first published on theBioBucket*, and kindly contributed to R-bloggers)
I added the function IPtoXY to theBioBucket-Archives which collects geographic coordinates for IP-addresses.
It uses a web-service at http://www.datasciencetoolkit.org// and works with the base R-packages.
# System time to collect coordinates of 100 IP-addresses:
> system.time(sapply(log$IP.Address[1:100], FUN = IPtoXY))
User System verstrichen
0.05 0.02 33.10
To leave a comment for the author, please follow the link and comment on his blog: theBioBucket*.
R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) statistics (regression, PCA, time series, trading) and more...


Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).