•  读取csv文件出现中文乱码方案，增加编码格式参数

  read.csv(trainPath,header=TRUE,stringsAsFactors=TRUE,encoding = "UTF-8")

• 保存csv文件中出现乱码，编码格式参数

  write.csv(outp, file = path, quote = F, fileEncoding = "UTF-8")

• source 加载R脚本中文乱码

  source("core.R",encoding="utf-8")

• RStudio中脚本中文乱码，编码格式设置：tools -> global option...., 如下图：
• 
• source加载R脚本waring, 函数及变量加载不进来的问题

  > source("core.R",encoding="utf-8")
  Warning message:
  In readLines(file, warn = FALSE) :
    invalid input found on input connection ‘core.R‘

•  R语言环境的显示问题

  > sessionInfo()
  R version 3.2.5 (2016-04-14)
  Platform: x86_64-w64-mingw32/x64 (64-bit)
  Running under: Windows >= 8 x64 (build 9200)
  
  locale:
  [1] LC_COLLATE=Chinese (Simplified)_China.936  LC_CTYPE=Chinese (Simplified)_China.936    LC_MONETARY=Chinese (Simplified)_China.936
  [4] LC_NUMERIC=C                               LC_TIME=Chinese (Simplified)_China.936    
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
  [1] plyr_1.8.4   DT_0.2       RODBC_1.3-13
  
  loaded via a namespace (and not attached):
  [1] htmlwidgets_0.7 magrittr_1.5    htmltools_0.3.5 tools_3.2.5     Rwordseg_0.2-1  Rcpp_0.12.6     digest_0.6.9   
  > Sys.getlocale()
  [1] "LC_COLLATE=Chinese (Simplified)_China.936;LC_CTYPE=Chinese (Simplified)_China.936;LC_MONETARY=Chinese (Simplified)_China.936;LC_NUMERIC=C;LC_TIME=Chinese (Simplified)_China.936"
  > Sys.setlocale(category = "LC_ALL",local="us")
  [1] "LC_COLLATE=English_United States.1252;LC_CTYPE=English_United States.1252;LC_MONETARY=English_United States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252"
  > Sys.setlocale(category = "LC_ALL",local="chinese")
  [1] "LC_COLLATE=Chinese (Simplified)_China.936;LC_CTYPE=Chinese (Simplified)_China.936;LC_MONETARY=Chinese (Simplified)_China.936;LC_NUMERIC=C;LC_TIME=Chinese (Simplified)_China.936"

中文乱码解决方案