问题描述
执行时
install.packages("dplyr")
install.packages("dplyr")
我知道
错误:版本说明"NA"无效另外:警告消息:在utils ::: packageDescription(packageName，fields ="Version")中:找不到软件包"knitr"
Error: invalid version specification ‘NA’In addition: Warning message:In utils:::packageDescription(packageName, fields = "Version") : no package 'knitr' was found
然后我调用该库，它显然也不起作用-
Then I call the library and it obviously doesn't work either -
库(dplyr)
错误:"dplyr"的程序包或名称空间加载失败:.onLoad在loadNamespace()中对于支柱"失败，详细信息:呼叫:utils :: packageVersion("vctrs")错误:找不到包"vctrs"另外:警告消息:软件包"dplyr"是在R版本3.5.3下构建的
Error: package or namespace load failed for ‘dplyr’: .onLoad failed in loadNamespace() for 'pillar', details: call: utils::packageVersion("vctrs") error: package ‘vctrs’ not foundIn addition: Warning message:package ‘dplyr’ was built under R version 3.5.3
我正在尝试使用％>％进行突变.根据公司政策，将不会发布完整的代码.我只需要帮助，为什么对我来说，诸如安装软件包和调用库之类的简单操作不起作用...
I am trying to use %>% and mutate. Will not post that full code due to company policy. I just need help with why something as simple as installing packages and calling libraries doesn't work for me...
推荐答案
您尝试过
install.packages('knitr', dependencies = TRUE)
?
让我知道这是否行不通.
Let me know if this doesn't work.
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