[Rd] Bug in SOM package (PR#7038)

[Prof Brian Ripley]

Please send bugs in packages (I think this is som, not SOM, and R does
care) to the package maintainer (Cc:ed here), as the FAQ asks. Also,
please give the version of R and of the package used.

I can't test this as I cannot even install som with gcc 3.4.0, and I have
just reported that to the maintainer.

As the package maintainer has no access to R-bugs and basic information is 
missing I am going to close this report on R-bugs and refer it to the 
maintainer.

On Thu, 1 Jul 2004 nikhilg at uab.edu wrote:

> Bug in "SOM" package in R.
>  
> This simple code withot for loop runs:-------simple.r--------
>  
> library(som)
> A <- as.matrix(read.table("C:/code/h.txt", sep="\t", header=TRUE,
> row.names=1))
> print(som(A,1,2)$visual)
> print(som(A,1,3)$visual)
> ----------------------------------------
>  
> The same code if inserted in for loop generates "Assertion failure" in
> Rgui.exe.
>  
> This is Microsoft Visual C++ runtime error in Rgui.exe and File =
> tn/vec.h
>  
> Line 250 
> Expression: i<=n_
>  
> Code with for loop:----------------------------sim.r--------------------
>  
> library(som)
> A <- as.matrix(read.table("C:/code/h.txt", sep="\t", header=TRUE,
> row.names=1))
> for(x in 2:3){
> print(som(A,1,x)$visual)
> }
> 
> Thanks,
> Nikhil Garge
> Computer Science graduate student,
> UAB

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595