[R] remove column names from a data frame

[Charilaos Skiadas]

I can't resist asking, why would you want to remove the variable  
names? If it is for printing purposes, then you can probably work  
around it on the printing side, depending on what you want to print.  
I can't think of another reason for wanting to remove the column  
names altogether.

Haris Skiadas
Department of Mathematics and Computer Science
Hanover College

On Feb 18, 2008, at 3:08 PM, Benilton Carvalho wrote:

> Well, Henrique's solution is nicer than mine. :-)
> b
>
> On Feb 18, 2008, at 3:05 PM, joseph wrote:
>
>> 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 at jhsph.edu>
>> To: joseph <jdsandjd at yahoo.com>
>> Cc: r-help at 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
>> >
>> >
>> >
>> >  
>> _____________________________________________________________________ 
>> _______________
>> > Looking for last minute shopping deals?
>> >
>> > /category.php?category=shopping
>> >     [[alternative HTML version deleted]]
>> >
>> > ______________________________________________
>> > 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.
>>
>>
>>
>> Never miss a thing. Make Yahoo your homepage.
>