r - 在 R 中导出为 CSV 时权限被拒绝

Question

这是我尝试过的代码，我尝试过的方法。基本上我只是想知道权限被拒绝的部分。

 data <- matrix(c(1,2,3,4), ncol=2)
 write.csv(data,"C:/Users/brian_000/Documents")

错误：

Error in file(file, ifelse(append, "a", "w")) : 
  cannot open the connection
 In addition: Warning message:
 In file(file, ifelse(append, "a", "w")) :
   cannot open file 'C:/Users/brian_000/Documents': Permission denied
   write.csv(data, file="C:/Users/brian_000/Documents")
  Error in file(file, ifelse(append, "a", "w")) : 
 cannot open the connection
 In addition: Warning message:
 In file(file, ifelse(append, "a", "w")) :
  cannot open file 'C:/Users/brian_000/Documents': Permission denied

Answer 1

C:/Users/brian_000/Documents是（大概）一个目录，所以你不能像它是一个文件一样写入它。相反，写入文件，如C:/Users/brian_000/Documents/myfile.csv.

Answer 2

我在尝试执行时遇到了同样的错误：

tip_data <- read.csv('my_tipdata.csv', header = TRUE)

原因是我在 Excel 中打开了文件。一旦我关闭文件，它就会正确执行。