| Subject: | bug in Statistics::R |
| Date: | Thu, 14 Dec 2006 23:28:48 -0700 |
| To: | bug-Statistics-R [...] rt.cpan.org |
| From: | Kendrick Killian <kendrick.killian [...] colostate.edu> |
There is a bug in the Statistics-R-0.02.
The bug will stop installation on a linux (unix) installation by
preventing
the linux routine from finding the R executable. If installation is
forced,
the bug shows up in every Statistics::R->new() when the binary
location is
not specified in the new command..
The following error message is generated:
Can'find R binary! at blib/lib/Statistics/R.pm line 74.
The bug was found on an OS X 10.4.8 (Darwin) installation although
I tested it on GNU/Linux 2.6.15, and SunOS 5.8 with the shells
csh, tcsh, ksh, and bash.
Reproducibility
The bug is not normally apparent since there are two sections of code
that search for the executable. The second section uses the shell for
the search after the buggy perl search fails. To get the error message
put a write statement in the shell initialization. Then the bug can be
seen by executing the following perl script:
perl -e'use Statistics::R; $R = Statistics::R->new();'
even on a successful installation.
The error occurs on line 67 of Linux.pm
my @path = (split(";" , $ENV{PATH} || $ENV{Path} || $ENV
{path} ) , '/usr/lib/R/bin' , '/usr/lib/R/bin' ) ;
The sells and unix's I tested use a colon, ':', not a semi-colon, ';'
to delimit the $PATH environment variable and a space to delimit $path
when it is defined. Also, there appears to be no reason to add
'/usr/lib/R/bin' to the search array.
The corrected line should read:
my @path = (split(":" , $ENV{PATH} || $ENV{Path} || $ENV
{path} ) , '/usr/lib/R/bin' ) ;
After that correction, the pearl search normally finds the R
executable and
the shell command `which R1 is not executed.
I am attaching the unpacked 'lib/Statistics/R/Bridge/Linux.pm'
listed in the manifest.
Kendrick
Message body is not shown because sender requested not to inline it.
===================================================================
Kendrick Killian (970) 491-5799
Colorado State University
Natural Resource Ecology Laboratory
Fort Collins, CO 80523-1499 Kendrick.Killian@colostate.edu