R:在安装软件包时出现unloadNamespace(package)问题 [英] R: Problems with unloadNamespace(package) when installing a package

问题描述

我制作了一个名为TRIMmaps的R软件包，并尝试使用命令进行安装

I made an R-package called TRIMmaps and tried to install it with the command

R CMD INSTALL TRIMmaps_v1.12.0

我收到以下错误消息:

Error in unloadNamespace(package) : 
  namespace ‘Rcpp’ is imported by ‘plyr’ so cannot be unloaded
Error in library(pkg, character.only = TRUE, logical.return = TRUE, lib.loc = lib.loc) : 
  "Rcpp" version 0.11.2 cannot be unloaded.

但是我确实需要plyr软件包，因为当我删除它时，会收到消息:

I do need package plyr, however, because when I remove it I get the message:

Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]) : 
  there is no package called ‘plyr’

我删除了两个软件包plyr和Rcpp，然后再次安装它们.我当前的Rcpp版本现在是0.11.5，但是当我再次尝试安装TRIMmaps-package时，我收到与上述相同的错误消息，包括行Rcpp version 0.11.2 cannot be unloaded.尽管我已经删除了较旧的Rcpp版本，并将其替换为0.11.5，但是在这里，0.11.2仍然会出现问题.

I removed both packages plyr and Rcpp and installed them again. My current version of Rcpp now is 0.11.5, but when I try to install the TRIMmaps-package again, I get the same error message as above including the line "Rcpp" version 0.11.2 cannot be unloaded. Although I have removed the older Rcpp-version and replaces it by 0.11.5, here still a problem occurs with 0.11.2.

我该如何解决?任何提示表示赞赏.

How do I solve this? Any hint is appreciated.

推荐答案

我遇到类似的错误.复制它的最低条件似乎是:

I get a similar error. Minimal conditions to reproduce it seem to be:

1. Depend在包装x(在我的情况下为reshape)上
2. 在小插图中装入一个包y(在我的情况下为plyr)，该包也可以导入或依赖于x.

1. Depend on a package x (in my case reshape)
2. In your vignette load a packge y (in my case plyr) that also imports or depends on x.

如果在包装构建或检查过程之外构建小插图，则该小插图会很好地构建，但是会抛出您以其他方式表示的错误.该错误也是R版本的，并且可能是特定于站点的，因为在尝试在另一台计算机上构建软件包时，R 3.2.0消除了该错误.

The vignette builds fine if you build it outside of the package building or checking process, but throws the error that you indicate otherwise. The error is also R version and maybe site specific, since it goes away with R 3.2.0 when trying to build the package on a different machine.

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