[R] Deleting row labels in dataframe

[David Winsemius]

On May 22, 2012, at 10:01 PM, arun wrote:

> HI David,
>
> My intention was to get the output in the format:
>
>  Price Floor Area Rooms Age Cent.heat
>     52   111  830     5 5.2        no
>     54   128  710     5 6.2        no
>     57   101 1000     5 3.8        no
>     57   138  690     5 4.5        no
>     59    93  780     5 6.8       yes
>
>
> which was accomplished from Peter's code:
>
>> print(HousePriceT1,row.names=FALSE).
> In the output given below by you, it is still having the rownumbers  
> (1,2,3,4,5) which I wanted to eliminate.

My point was ... you have NOT "eliminated" them. There are still  
row.names in that dataframe. You have been told by an experienced useR  
how to `print` that object in a manner that lets you not see them.  
They are still there.

-- 
David.


>
> ----- Original Message -----
> From: David Winsemius <dwinsemius at comcast.net>
> To: Peter Ehlers <ehlers at ucalgary.ca>
> Cc: arun <smartpink111 at yahoo.com>; R help <r-help at r-project.org>
> Sent: Tuesday, May 22, 2012 9:48 PM
> Subject: Re: [R] Deleting row labels in dataframe
>
>
> On May 22, 2012, at 6:30 PM, Peter Ehlers wrote:
>
>> On 2012-05-22 13:55, arun wrote:
>>> Dear R group,
>>>
>>> I was working on an example dataset to see if the row labels can  
>>> be deleted.   I know that header=TRUE could be used when we use  
>>> read.table.  In the data.frame, I tried to delete row labels  
>>> 1,2,..5, but so far not successful.  Is there a neat way to do it.
>>>
>>
>> What are you trying to accomplish? Save the dataframe without
>> rownames?
>> Use write.table(..., row.names=FALSE)
>>
>> Print it in the console without rownames?
>> Use print(..., row.names=FALSE)
>>
> Notice that Peter Ehlers, an accomplished useR, has _not_ told you  
> how to remove row.names from dataframes.
>
>> attr(HousePriceT1, "rownames") <- NULL
>> HousePriceT1
>   Price Floor Area Rooms Age Cent.heat
> 1    52   111  830     5 5.2        no
> 2    54   128  710     5 6.2        no
> 3    57   101 1000     5 3.8        no
> 4    57   138  690     5 4.5        no
> 5    59    93  780     5 6.8       yes
>
>
> --David.
>
>> Peter Ehlers
>>
>>> Thanks.
>>> A.K.
>>>
>>>
>>> HousePriceT1<-structure(list(Price = c(52, 54, 57, 57, 59), Floor  
>>> = c(111,
>>> 128, 101, 138, 93), Area = c(830, 710, 1000, 690, 780), Rooms = c(5,
>>> 5, 5, 5, 5), Age = c(5.2, 6.2, 3.8, 4.5, 6.8), Cent.heat =  
>>> structure(c(1L,
>>> 1L, 1L, 1L, 2L), .Label = c("no", "yes"), class =  
>>> "factor")), .Names = c("Price",
>>> "Floor", "Area", "Rooms", "Age", "Cent.heat"), row.names = c(NA,
>>> -5L), class = "data.frame")
>>>
>>
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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.
>
> David Winsemius, MD
> West Hartford, CT

David Winsemius, MD
West Hartford, CT