Question

我有一个单独的库文件夹。我按如下方式安装了ks：

> install.packages('ks', lib='packages')

  There is a binary version available (and will be
  installed) but the source version is later:
   binary source
ks  1.9.2  1.9.4

also installing the dependencies 'KernSmooth', 'misc3d', 'mvtnorm', 'rgl', 'multi cool'

现在，我想加载这些软件包。

> require(ks, lib.loc='packages')
Loading required package: ks
Failed with error:  'package 'KernSmooth' required by 'ks' could not be found'

也就是说，require找到了ks但未找到KernSmooth - 因为它并未尝试从KernSmooth加载packages。我可以手动加载它：

> require(KernSmooth, lib.loc='packages')
Loading required package: KernSmooth
KernSmooth 2.23 loaded
Copyright M. P. Wand 1997-2009
Warning message:
package 'KernSmooth' was built under R version 3.1.2

我可以再次尝试require(ks, lib.loc='packages)，但它会告诉我下一个包misc3d尚未加载。

我是否必须手动加载库文件夹中的所有依赖项？我希望这会自动生效，即如果我require(foo, bar)，foo也会尝试从bar加载其依赖项。

Answer 1

函数.libPaths用于获取和设置R查找的路径包。如果您执行以下操作，它应该可以正常工作。

install.packages('ks', lib='packages')

.libPaths("packages")
require(ks)

事实上，如果你计划大量使用"packages"，你甚至可以在安装之前设置它，这使得你的所有新包都默认存在。

.libPaths("packages")
.libPaths()

[1] "/home/christofer/packages"     "/usr/local/lib/R/site-library"
[3] "/usr/lib/R/site-library"       "/usr/lib/R/library"

install.packages('ks')

Installing package into ‘/home/christofer/packages’
(as ‘lib’ is unspecified)
...

require(ks)

R：require（foo，lib.loc = bar）不会将lib.loc = bar转发给依赖项

1 个答案: