packageStatus(utils)
packageStatus()所属R语言包：utils
Package Management Tools
软件包管理工具
译者：生物统计家园网 机器人LoveR
描述----------Description----------
Summarize information about installed packages and packages available at various repositories, and automatically upgrade outdated packages.
总结安装包和包在不同的仓库信息，并自动升级过时的包。
用法----------Usage----------
packageStatus(lib.loc = NULL, repositories = NULL, method,
type = getOption("pkgType"))
## S3 method for class 'packageStatus'
summary(object, ...)
## S3 method for class 'packageStatus'
update(object, lib.loc = levels(object$inst$LibPath),
repositories = levels(object$avail$Repository), ...)
## S3 method for class 'packageStatus'
upgrade(object, ask = TRUE, ...)
参数----------Arguments----------
参数：lib.loc
a character vector describing the location of R library trees to search through, or NULL. The default value of NULL corresponds to all libraries currently known.
字符向量描述R库树的位置，通过搜索，或NULL。默认值的NULL对应于目前已知的所有库。
参数：repositories
a character vector of URLs describing the location of R package repositories on the Internet or on the local machine.
特征向量的描述在互联网上或在本地机器上的位置的R包库的网址。
参数：method
Download method, see download.file.
下载方法，请参阅download.file。
参数：type
type of package distribution: see install.packages.
包分配类型：install.packages。
参数：object
an object of class "packageStatus" as returned by packageStatus.
类对象"packageStatus"返回packageStatus的。
参数：ask
if TRUE, the user is prompted which packages should be upgraded and which not.
如果TRUE，则提示用户升级包应该，哪些不。
参数：...
currently not used.
目前没有使用。
Details
详情----------Details----------
The URLs in repositories should be full paths to the appropriate contrib sections of the repositories. The default is contrib.url(getOption("repos")).
在repositories的网址应该是适当的库的contrib部分的完整路径。默认contrib.url(getOption("repos"))。
There are print and summary methods for the "packageStatus" objects: the print method gives a brief tabular summary and the summary method prints the results.
有print和summary"packageStatus"对象的方法：print方法给出了一个简短的表格总结和summary方法的输出结果。
The update method updates the "packageStatus" object. The upgrade method is similar to update.packages: it offers to install the current versions of those packages which are not currently up-to-date.
update方法更新"packageStatus"对象。类似upgradeupdate.packages方法是：它提供了安装这些软件包，这是目前没有最新的当前版本。
值----------Value----------
An object of class "packageStatus". This is a list with two components
对象类"packageStatus"。这是一个带有两个组件的列表
参数：inst
a data frame with columns as the matrix returned by installed.packages plus "Status", a factor with levels c("ok", "upgrade"). Only the newest version of each package is reported, in the first repository in which it appears.
与矩阵的列的数据框返回installed.packages加"Status"，与水平的一个因素c("ok", "upgrade")。只有每个软件包的最新版本，据悉，它出现在第一库。
参数：avail
a data frame with columns as the matrix returned by available.packages plus "Status", a factor with levels c("installed", "not installed", "unavailable")..
available.packages加"Status"返回一个矩阵的列的数据框，与水平的一个因素c("installed", "not installed", "unavailable")..
For the summary method the result is also of class "summary.packageStatus" with additional components
结果为summary方法也是类"summary.packageStatus"附加组件
参数：Libs
a list with one element for each library
为每个库的一个元素的列表
参数：Repos
a list with one element for each repository
每个仓库的一个元素列表
with the elements being lists of character vectors of package name for each status.
元素包名称为每个状态的特征向量名单。
参见----------See Also----------
installed.packages, available.packages
installed.packages，available.packages
举例----------Examples----------
## Not run: [＃无法运行：]
x <- packageStatus()
print(x)
summary(x)
upgrade(x)
x <- update(x)
print(x)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注：
注1：为了方便大家学习，本文档为生物统计家园网机器人LoveR翻译而成，仅供个人R语言学习参考使用，生物统计家园保留版权。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
注3：如遇到不准确之处，请在本贴的后面进行回帖，我们会逐渐进行修订。
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发表于 2012-2-16 18:17:03
