gistfile1.r
> authors
surname nationality deceased
1 Tukey US yes
2 Venables Australia no
3 Tierney US no
4 Ripley UK no
5 McNeil Australia no
> books
name title other.author
1 Tukey Exploratory Data Analysis <NA>
2 Venables Modern Applied Statistics ... Ripley
3 Tierney LISP-STAT <NA>
4 Ripley Spatial Statistics <NA>
5 Ripley Stochastic Simulation <NA>
6 McNeil Interactive Data Analysis <NA>
7 R Core An Introduction to R Venables & Smith
> authors_books<-merge(authors,books,by.x="surname",by.y="name",all=TRUE)
> authors_books
surname nationality deceased title other.author
1 McNeil Australia no Interactive Data Analysis <NA>
2 R Core <NA> <NA> An Introduction to R Venables & Smith
3 Ripley UK no Spatial Statistics <NA>
4 Ripley UK no Stochastic Simulation <NA>
5 Tierney US no LISP-STAT <NA>
6 Tukey US yes Exploratory Data Analysis <NA>
7 Venables Australia no Modern Applied Statistics ... Ripley
> authors_books<-merge(authors,books,by.x="surname",by.y="name",all=FALSE)
> authors_books
surname nationality deceased title other.author
1 McNeil Australia no Interactive Data Analysis <NA>
2 Ripley UK no Spatial Statistics <NA>
3 Ripley UK no Stochastic Simulation <NA>
4 Tierney US no LISP-STAT <NA>
5 Tukey US yes Exploratory Data Analysis <NA>
6 Venables Australia no Modern Applied Statistics ... Ripley