Togaware DATA MINING
Desktop Survival Guide
by Graham Williams
Google

Internet

You can check whether you have access to an Internet connection using the XnullXR functionsR functions (R function)R functionsR libraries (R library)R functionsR option (R option)R functionsR packages (R package)R functionsDatasets (Dataset)R functionsR functionsnsl function, checking for a specific hostname:

> nsl("www.r-project.org")
[1] "137.208.57.37"
> if(is.null(suppressWarnings(nsl("www.r-project.org")))) print("Connected?")



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