Re: [R] remove column names from a data frame

From: joseph <jdsandjd_at_yahoo.com>
Date: Mon, 18 Feb 2008 12:05:17 -0800 (PST)


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

>

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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>

PLEASE
do
read
the
posting
guide
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>

and
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R-help_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Mon 18 Feb 2008 - 20:07:28 GMT

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