在Mac上加载geepack的问题

Question

我想使用R运行GEE程序，但我无法在Mac上加载geepack。这是我得到的错误。请有人帮我解释一下这意味着什么？为什么我需要加载这么多其他软件包才能使用geepack。谢谢。

> library(geepack)
Loading required package: doBy
Loading required package: survival
Loading required package: splines
Loading required package: R2HTML
Loading required package: multcomp
Loading required package: mvtnorm
Loading required package: lme4
Loading required package: Matrix
Loading required package: lattice

Attaching package: 'Matrix'

The following object(s) are masked from 'package:base':

    det


Attaching package: 'lme4'

The following object(s) are masked from 'package:stats':

    AIC, BIC

Loading required package: snow
Error: package 'snow' could not be loaded
In addition: Warning messages:
1: package 'survival' was built under R version 2.13.2 
2: In library(pkg, character.only = TRUE, logical.return = TRUE, lib.loc = lib.loc) :
  there is no package called 'snow'

Answer 1

错误消息似乎足够清楚。你没有安装包'snow'。

Answer 2

我删除了R.2.13.2版本并安装了旧版本R 2.11，它运行得很好。我认为R.2.13.2版本可能需要一些修复。也许R2.14版本可能会更好。