Hi Benilton
I actually tried "names(df) <- NULL" before I asked for help. Please see below how it looks like

> names(df) <- NULL
> df
  structure(c("chr1", "chr2", "chr3"), class = "AsIs") structure(c("1", "2", "3"), class = "AsIs")
1                                                 chr1                                           1
2                                                 chr2                                           2
3                                                 chr3                                           3
  structure(c("4", "5", "6"), class = "AsIs") structure(c("7", "8", "9"), class = "AsIs")
1                                           4                                           7
2                                           5                                           8
3                                           6                                           9
> 


----- Original Message ----
From: Benilton Carvalho <bcarvalh@jhsph.edu>
To: joseph <jdsandjd@yahoo.com>
Cc: r-help@r-project.org
Sent: Monday, February 18, 2008 11:47:50 AM
Subject: Re: [R] remove column names from a data frame


apparently 
you 
want 
to 
check 
the 
"Introduction 
to 
R" 
document.... 
I  
found 
it 
very 
useful 
when 
I 
started 
working 
with 
R:

http://cran.r-project.org/doc/manuals/R-intro.pdf

try:

names(df) 
<- 
NULL

b

ps: 
"df" 
is 
the 
name 
of 
the 
function 
to 
get 
the 
density 
for 
an 
F  
distribution...

On 
Feb 
18, 
2008, 
at 
2:42 
PM, 
joseph 
wrote:

>
>
> 
I 
want 
to 
remove 
the 
column 
names 
from 
a 
data 
frame. 
I 
do
> 
it 
the 
long 
way, 
can 
any 
body 
show 
me 
a 
better 
way 
?
>
>
> 
df= 
data.frame(chrN= 
c(“chr1”, 
“chr2”, 
“chr3”), 
start= 
c(1,
> 
2, 
3), 
end= 
c(4, 
5, 
6), 
score= 
c(7, 
8, 
9))
>
>
> 
df
>
>
> 
#I 
write 
a 
txt 
file 
without 
row 
or 
column 
names
>
>
> 
write.table(df,"df1.txt",sep='\t',quote=FALSE,row.names=F,col.names=F)
>
>
> 
#then 
I 
read 
it 
with 
the 
header 
= 
F 
to 
obtain 
the 
format
> 
I 
want
>
>
> 
df1=read.table("df1.txt", 
header 
= 
F)
>
>
> 
df1
>
>
>  
  
  
 
> 
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> 
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> 
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commented, 
minimal, 
self-contained, 
reproducible 
code.







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