segfault when calling robjects.r.table()

[lgautier]

Original report by Laurent Gautier (Bitbucket: lgautier, GitHub: lgautier).

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Bug report from Kylee Kim

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Hi,

I am getting segmentation fault error for robjects.r.table() and trying to understand why this happens.
Here is simplified example.

import rpy2.robjects as robjects
r = robjects.r
mylist = ['a', 'a', 'b', 'd', 'b']
myNumList = [1,2,3,4]

print robjects.IntVector(myNumList)

#>>> print robjects.IntVector(myNumList)
#[1] 1 2 3 4

print robjects.StrVector(mylist)

#>>> print robjects.StrVector(mylist)
#[1] "a" "a" "b" "d" "b"

print r.factor(robjects.StrVector(mylist))

#>>> print r.factor(robjects.StrVector(mylist))
#[1] a a b d b
#Levels: a b d

Both of the following produce a segmentation fault error.

r.table(robjects.StrVector(mylist))
r.table(r.factor(robjects.StrVector(mylist)))

I want to pass output of r.table into r.barplot.

r.barplot(r.table(robjects.StrVector(mylist)))

My environments are:
Python 2.4.1

R version 2.7.1 (2008-06-23)

Any advise on usage of r.table() and r.barplot() is much appreciated.

Thanks in advance,
Kylee

p.s. here are some corresponding R outputs.

mylist = c('a', 'a', 'b', 'd', 'b')
mylist
[1] "a" "a" "b" "d" "b"
table(mylist)
mylist
a b d
2 2 1
barplot(table(mylist))

[lgautier]

Original comment by Laurent Gautier (Bitbucket: lgautier, GitHub: lgautier).

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Please specify your rpy2 version.

I am running your code without segfault with
rpy2-2.04 (to be released shortly)
and
R-2.9.0/Python 2.4.6
R-2.9.0/Python 2.5.4
R-2.9.0/Python 2.6.2

Trying updating your Python version, then your R version.
There were reports of people seeing mysterious segfault disappear with version R-2.8

L.