R devel - Jul 2004 - Bug in SOM package (PR#7038)

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

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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@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@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

Dear Mr. Jun Yan and Dr. Riply,
 
Sorry for the sloppy email I sent earlier about the bug in R.
 
Bug Report in R:
 
Version: 1.9
Package: som 
 
Bug description:
This simple code WITHOUT "for loop"  EXECUTES
PROPERLY:-------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)
 
------------------------------------------------------------------------
---------------------------------------
 
But the same logic if coded IN "for loop" DOESNT EXECUTE:
 
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)
 }
------------------------------------------------------------
 
ERROR GENERATED: -----------------------------------------------------
 
This is Microsoft Visual C++ runtime error in Rgui.exe
File =  tn/vec.h
Line 250
Expression: i<=n_
------------------------------------------------------------------------
-----------
 
 Thanks,
 Nikhil Garge
 Computer Science graduate student,
 University go Alabama Birmingham

 
 

	-----Original Message----- 
	From: Prof Brian Ripley [mailto:ripley@stats.ox.ac.uk] 
	Sent: Thu 7/1/2004 2:36 AM 
	To: Nikhil R Garge 
	Cc: r-devel@stat.math.ethz.ch; Jun Yan 
	Subject: Re: [Rd] Bug in SOM package (PR#7038)
	
	

	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@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@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
	
	


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