极客教程R语言 获取所有附加包的完整路径 – searchpath() 函数
R语言中的 searchpath() 函数用于列出R搜索路径上所附的软件包的完整路径。
语法： searchpath()
参数：
这个函数不需要参数。
例子1：
# R program to get the full path
# of attached packages in R
# Calling searchpath() function
searchpath()
R
输出：
[1] ".GlobalEnv"
[2] "C:/Program Files/R/R-2.15.2/library/stats"
[3] "C:/Program Files/R/R-2.15.2/library/graphics"
[4] "C:/Program Files/R/R-2.15.2/library/grDevices"
[5] "C:/Program Files/R/R-2.15.2/library/utils"
[6] "C:/Program Files/R/R-2.15.2/library/datasets"
[7] "C:/Program Files/R/R-2.15.2/library/methods"
[8] "Autoloads"
[9] "C:/PROGRAM~1/R/R-215~1.2/library/base"
R
例2：
# R program to get the full path
# of attached packages in R
# Attaching datasets to path
attach(BOD)
attach(airquality)
# Calling searchpath() function
searchpath()
R
输出：
[1] ".GlobalEnv"
[2] "BOD"
[3] "airquality"
[4] "C:/Program Files/R/R-2.15.2/library/stats"
[5] "C:/Program Files/R/R-2.15.2/library/graphics"
[6] "C:/Program Files/R/R-2.15.2/library/grDevices"
[7] "C:/Program Files/R/R-2.15.2/library/utils"
[8] "C:/Program Files/R/R-2.15.2/library/datasets"
[9] "C:/Program Files/R/R-2.15.2/library/methods"
[10] "Autoloads"
[11] "C:/PROGRAM~1/R/R-215~1.2/library/base"
R