Desktop Survival Guide
by Graham Williams

Information About a Package

Information about a package can be obtained through the library function, using the help option. The information includes the basic meta-data about the package (including its name, version, author, and dependencies).

> library(help=rpart)
                Information on package "rpart"


Package:       rpart
Priority:      recommended
Version:       3.1-23
Date:          March 2002 version of rpart, R version 2005-04-15
Author:        Terry M Therneau and Beth Atkinson <[email protected]>.
               R port by Brian Ripley <[email protected]>.
Maintainer:    Brian Ripley <[email protected]>
Description:   Recursive partitioning and regression trees
Title:         Recursive Partitioning
Depends:       R (>= 2.0.0)
Suggests:      survival
License:       use under GPL2, or see file LICENCE
LazyData:      yes
URL:           S-PLUS 6.x original at
Packaged:      Tue Apr 19 11:21:21 2005; ripley
Built:         R 2.1.0; i386-pc-linux-gnu; 2005-04-20 03:10:16; unix


car.test.frame          Automobile Data from 'Consumer Reports' 1990
cu.summary              Automobile Data from 'Consumer Reports' 1990
kyphosis                Data on Children who have had Corrective
                        Spinal Surgery


The package help also includes a list of what the package contains. Each item here will generally have further help available through the help function:

> help(car.test.frame)
car.test.frame             package:rpart             R Documentation

Automobile Data from 'Consumer Reports' 1990


     The 'car.test.frame' data frame has 60 rows and 8 columns, giving
     data on makes of cars taken from the April, 1990 issue of
     Consumer Reports. This is part of a larger dataset, some columns
     of which are given in 'cu.summary'.

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