R 语言下常用第三方库的说明

1. doBy

官方文档见 CRAN - Package doBy

doBy 主要适用于以下操作：

  • 1) Facilities for groupwise computations of summary statistics and other facilities for working with grouped data: ‘do’ something to data stratified ‘by’ some variables.
  • 2) LSmeans (least-squares means), general linear contrasts.
  • 3) Miscellaneous other utilities.
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原文地址：https://www.cnblogs.com/mtcnn/p/9421461.html