Package: python-rpy2
Version: 2.2.6-1
Severity: normal

Dear Maintainer,

I'm not sure if this is a bug with rpy2 or r-cran-robustbase.

The following program will run successfully when n == 17, but breaks with n == 
18:

#!/usr/bin/python

from rpy2 import robjects as R
from rpy2.robjects.packages import importr
robustbase = importr("robustbase")

if __name__ == "__main__":

    for n in (17, 18):

        nums0 = list(range(n))
        nums1 = list(range(n))

        r_nums0 = R.FloatVector(nums0)
        r_nums1 = R.FloatVector(nums1)

        fit = robustbase.ltsReg(r_nums0, r_nums1)


The error given when n == 18 is:

Error in matrix(x, length(x), 1, dimnames = list(names(x), 
deparse(substitute(x)))) :
  length of 'dimnames' [2] not equal to array extent
Traceback (most recent call last):
  File "./break_rpy2.py", line 17, in <module>
    fit = robustbase.ltsReg(r_nums0, r_nums1)
  File "/usr/lib/python2.7/dist-packages/rpy2/robjects/functions.py", line 82, 
in __call__
    return super(SignatureTranslatedFunction, self).__call__(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/rpy2/robjects/functions.py", line 34, 
in __call__
    res = super(Function, self).__call__(*new_args, **new_kwargs)
rpy2.rinterface.RRuntimeError: Error in matrix(x, length(x), 1, dimnames = 
list(names(x), deparse(substitute(x)))) :
  length of 'dimnames' [2] not equal to array extent

Thanks.

Andrew


-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.1.0-1-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages python-rpy2 depends on:
ii  libblas3 [libblas3gf]      1.2.20110419-5
ii  libblas3gf                 1.2.20110419-5
ii  libc6                      2.13-37
ii  liblapack3 [liblapack3gf]  3.4.1-6
ii  liblapack3gf               3.4.1-6
ii  python                     2.7.2-10
ii  python-numpy               1:1.6.2-1
ii  python2.6                  2.6.7-4
ii  python2.7                  2.7.2-8
ii  r-base-core                2.15.1-4

python-rpy2 recommends no packages.

Versions of packages python-rpy2 suggests:
pn  python-rpy-docs  <none>

-- no debconf information


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