Romain Francois, Professional R Enthusiast

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Tuesday, September 8 2009

search the graph gallery from R

This is a short code snippet that is motivated by this thread on r-help yesterday. The gallery contains a search engine textbox (top-right) that can be used to search for content in the website using either its internal crude search engine or perform a google search restricted to the gallery.

Here we write a small R function that can be used to take advantage of the search engine, from R

rgg.search <- function( topic, engine = c("Google", "RGG") ){

    engine <- match.arg( engine )
    url <- URLencode( sprintf( "http://addictedtor.free.fr/graphiques/search.php?q=%s&engine=%s", topic, engine ) )
    browseURL( url )
}
rgg.search( "Andrews plot" ) 

Wednesday, August 5 2009

Code Snippet : List of CRAN packages

This is a really simple code snippet that shows how to get the list of CRAN packages and their titles from the html page html page (toulouse mirror in this example).

...

Note that R has the available.packages function, but it does not give the titles of the packages