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MERGE-ing (pasting) two data frames in R: all=FALSE if you want INTERSECTION (common part of both) as a result all=TRUE if you want SUM (differences fullfiled with NA) as a result http://stat.ethz.ch/R-manual/R-devel/library/base/html/merge.html
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| > 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 |
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