readChar中的警告

Question

在R CMD check中，我的包裹有以下未知警告：

Warning in readChar(path, nchars = file.info(path)$size, ...) :
  can only read in bytes in a non-UTF-8 MBCS locale 

如下所示：

-- R CMD check results --------------------------------- my_Package ----
Duration: 1m 4s

> checking installed package size ... NOTE
    installed size is  5.8Mb
    sub-directories of 1Mb or more:
      doc       1.4Mb
      extdata   2.9Mb

0 errors �� | 0 warnings �� | 1 note x
Warning in readChar(path, nchars = file.info(path)$size, ...) :
  can only read in bytes in a non-UTF-8 MBCS locale

R CMD check succeeded

我想知道此警告的含义，我认为包装中包含一些不需要的字符吗？