1 回答> installed.packages(caret) Error in installed.packages(caret) : object 'caret' not found

2 回答> library(caret) 載入需要的程輯包：lattice Error in nchar(homeDir) : invalid multibyte string, element 1 載入需要的程輯包：ggplot2 Error in nchar(homeDir) : invalid multibyte string, element 1 Error in nchar(homeDir) : invalid multibyte string, element 1 > install.packages

3 回答在RStudio，執行data()出錯：Win10 R 3.3.2 "Error: File C:\Users\東\AppData\Local\Temp\RtmpyCdSDj\RpackageIQRe3c69677407 does not exist."