相关疑难解决方法(0)

$ R
R version 2.12.2 (2011-02-25)
Platform: i486-pc-linux-gnu (32-bit)

> install.packages("ggplot2", dep="T")
Error in apply(available[p1, dependencies, drop = FALSE], 1L, function(x)  paste(x[!is.na(x)],  : 
  subscript out of bounds

我该怎么做才能安装ggp​​lot2？