[R] Why I am not able to load library(R.matlab)? Other packages are fine.

[C W]

Dear R list,

I am trying to do use the R.matlab library, I did the following, but it
does not work.

> library(R.matlab)
Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck
= vI[[j]]) :
  there is no package called ‘R.methodsS3’
Error: package or namespace load failed for ‘R.matlab’

This is my session info.

> sessionInfo()
R version 3.2.0 (2015-04-16)
Platform: x86_64-apple-darwin13.4.0 (64-bit)
Running under: OS X 10.10.3 (Yosemite)

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

My R is up-to-date, R 3.2.0.  Why is this happening?  Is it because I
installed the new R version, instead of updating it?  Maybe things are in a
different directory?

Thanks so much,

Mike

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