segfault when calling robjects.r.table()

Issue #6 wontfix
Laurent Gautier created an issue

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))

Comments (1)

  1. Laurent Gautier reporter

    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.

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