[Rd] multinom crashes (when I do something stupid) (PR#8358)

From: <rob.foxall_at_bbsrc.ac.uk>
Date: Wed 30 Nov 2005 - 11:00:46 GMT

Full_Name: Rob Foxall
Version: 2.2.0
OS: Windows XP
Submission from: (NULL) (

I was using multinom from nnet package, when I did something stupid -- I entered in an incorrect factor variable as response. This factor had only one level. Instead of R telling me not to be so dumb, it crashed, clicking on debug coming up with the message "An exception 'Unhandled Win32 Exception' has occurred in Rgui.exe." This has happened on both my laptop and desktop (it took me a while to see my mistake!). It can be easily reproduced with made-up data, e.g.

set.seed(1) # not really needed, but definitely crashes for this! temp_g <- as.factor(rep("level1",10))
temp_x <- rnorm(10)
multinom(temp_g ~ temp_x)


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https://stat.ethz.ch/mailman/listinfo/r-devel Received on Wed Nov 30 22:11:07 2005

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