Warning in install.packages :
'lib = "C:/Program Files/R/R-4.1.0/library"' is not writable
Warning in install.packages :
cannot create dir 'C:\Users???', reason 'Invalid argument'
Error in install.packages : unable to create ‘C:/Users/???/Documents/R/win-library/4.1’
我想下载他默认这个选项
R语言弄训练集和验证集出错
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