[R] map does not display maps, MacOSX

[Philippe Glaziou]

Hi,

I installed the maps and mapdata libraries on my R-1.8.0 on
MacOSX 10.2.8 (jaguar on a powerbook G4), and failed to make the
map function work properly:


R : Copyright 2003, The R Development Core Team
Version 1.8.0  (2003-10-08)
[...]

> library(maps)
> map()
Error in file(file, "r") : unable to open connection
In addition: Warning message: 
cannot open file `/Users/glaziou/Library/R/maps/mapdata//world.N' 
> map('usa')
Error in file(file, "r") : unable to open connection
In addition: Warning message: 
cannot open file `/Users/glaziou/Library/R/maps/mapdata//usa.N' 
> system('ls -l /Users/glaziou/Library/R/maps/mapdata')
total 1796
-rw-r--r--   1 root     staff      143902 Oct 14 11:30 county.G
-rw-r--r--   1 root     staff      690260 Oct 14 11:30 county.L
-rw-r--r--   1 root     staff         618 Oct 14 11:30 nz.G
-rw-r--r--   1 root     staff       13040 Oct 14 11:30 nz.L
-rw-r--r--   1 root     staff        2642 Oct 14 11:30 state.G
-rw-r--r--   1 root     staff       96892 Oct 14 11:30 state.L
-rw-r--r--   1 root     staff         282 Oct 14 11:30 usa.G
-rw-r--r--   1 root     staff       58232 Oct 14 11:30 usa.L
-rw-r--r--   1 root     staff       74434 Oct 14 11:30 world.G
-rw-r--r--   1 root     staff      295152 Oct 14 11:30 world.L
-rw-r--r--   1 root     staff       74434 Oct 14 11:30 world2.G
-rw-r--r--   1 root     staff      295152 Oct 14 11:30 world2.L
-rw-r--r--   1 root     staff       54832 Oct 14 11:30 world2.N

Most of contributed libraries are installed in ~/Library/R
because I am the only user of that mac and this simplifies
backup. I checked the access rights of relevant files and
directories and they all seem correct (these are owned by root
but are world readable and directories are world cd'able).
Compilation of both libraries maps and mapdata went ok.  I have
the same libraries installed on a linux server where they work
perfectly well. 

A similar error message occurs whether R is started in an xterm,
within emacs/ESS on X11, or using the RAqua interface.

Any hint appreciated,

-- 
Philippe Glaziou