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

From: Charilaos Skiadas <cskiadas_at_gmail.com>
Date: Mon, 18 Feb 2008 15:28:26 -0500

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
>> >
>> >
>> >
>> >
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>> > R-help_at_r-project.org mailing list
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>> > PLEASE do read the posting guide http://www.R-project.org/
>> posting-guide.html
>> > and provide commented, minimal, self-contained, reproducible code.
>>
>>
>>
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>



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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 - 20:32:04 GMT

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