摘要：
统计：mean：平均数sd:Standard Deviation 标准差var:方差median：中位数cov:协方差cor:相关系数#环境ls/objectsrmhelp()library() #查看可用packagelibrary(help="base")search() #查看已装载package#查看属性length()mode()storage.mode()typeof()unclassattr(x,"go")0]#列表操作x <- c(1,2,3,4)x+1y <- c(2,4,6,8)x+y 阅读全文
摘要：
powershell比较强大，比较好用，比较方便。$et=New-Object -ComObject et.application#$et.Visible=$true$et.DisplayAlerts=$false$wb=$et.Workbooks.Add('d:\run.xls')$wb.SaveAs('d:\run.csv',6)$et.Quit() 阅读全文