On Aug 2, 2011, at 19:17 , Bert Gunter wrote:
> Thanks for this Peter:
>
>>
>> Sarah (sic) is on the right track, just lose the commas so that you don't
>> drop to a vector:
>>
>>> x <- data.frame(A=1:3, B=1:3, C=1:3, D=1:3, E=1:3)
>>> newcol <- 4:6
>>> cbind(x[1], newcol, x[2:ncol(x)])
>> A
Thanks for this Peter:
>
> Sarah (sic) is on the right track, just lose the commas so that you don't
> drop to a vector:
>
>> x <- data.frame(A=1:3, B=1:3, C=1:3, D=1:3, E=1:3)
>> newcol <- 4:6
>> cbind(x[1], newcol, x[2:ncol(x)])
> A newcol B C D E
> 1 1 4 1 1 1 1
> 2 2 5 2 2 2 2
> 3
On Aug 1, 2011, at 20:50 , David L Carlson wrote:
> Actually Sara's method fails if the insertion is after the first or before
> the last column:
>
>> x <- data.frame(A=1:3, B=1:3, C=1:3, D=1:3, E=1:3)
>> newcol <- 4:6
>> cbind(x[,1], newcol, x[,2:ncol(x)])
>
Sarah (sic) is on the right track,
Anthropology
Texas A&M University
College Station, TX 77843-4352
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Sarah Goslee
Sent: Monday, August 01, 2011 12:44 PM
To: Bert Gunter
Cc: r-help@r-project.org
Subject: Re: [R]
Thanks Sarah and David.
Yes, but note this:
> z <- data.frame(a=1:2,b=3:4)
> z
a b
1 1 3
2 2 4
> newdat <- 5:6
> cbind(z[,1],newdat,z[,2])
newdat
[1,] 1 5 3
[2,] 2 6 4
> cbind.data.frame(z[,1],newdat,z[,2])
z[, 1] newdat z[, 2]
1 1 53
2 2 6
On Mon, Aug 1, 2011 at 1:43 PM, Sarah Goslee wrote:
> Bert,
>
> On Mon, Aug 1, 2011 at 1:27 PM, Bert Gunter wrote:
>> Folks:
>>
>> I consider my reply below rather clumsy: One has to keep track of
>> index numbers other than that which is inserted and must separately
>> change column names. Is th
Bert,
On Mon, Aug 1, 2011 at 1:27 PM, Bert Gunter wrote:
> Folks:
>
> I consider my reply below rather clumsy: One has to keep track of
> index numbers other than that which is inserted and must separately
> change column names. Is there as "essentially better" way to do this,
> either via base R
Bert,
On Mon, Aug 1, 2011 at 1:17 PM, Bert Gunter wrote:
> Doesn't work -- you lose column names.
But I don't lose column names:
> x <- data.frame(A=1:3, B=1:3, C=1:3, D=1:3, E=1:3)
> x
A B C D E
1 1 1 1 1 1
2 2 2 2 2 2
3 3 3 3 3 3
> newcol <- 4:6
> cbind(x[,1:2], newcol, x[,3:ncol(x)])
A B
ropology
Texas A&M University
College Station, TX 77843-4352
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Bert Gunter
Sent: Monday, August 01, 2011 12:18 PM
To: Sarah Goslee
Cc: r-help@r-project.org
Subject: Re: [R] Inserting colu
Folks:
I consider my reply below rather clumsy: One has to keep track of
index numbers other than that which is inserted and must separately
change column names. Is there as "essentially better" way to do this,
either via base R or via an R package. I leave it to you to define
"essentially better.
Doesn't work -- you lose column names.
Try this instead:
yourframe[,30:51] <- cbind( newcolumn,yourframe[,30:50])
Adjust column names after via:
names(yourframe) [30:51] <- c(newcolname,names(yourframe[30:50])
Cheers,
Bert
On Mon, Aug 1, 2011 at 10:10 AM, Sarah Goslee wrote:
> x <- cbind(x[,
x <- cbind(x[,1:29], newcolumn, x[,30:ncol(x)])
On Mon, Aug 1, 2011 at 12:59 PM, Bansal, Vikas wrote:
> Dear all,
>
> I have a very simple question.I have data frame of 50 columns and i want to
> insert a column in 30th position.But i do not want to delete that column.Is
> it possible to includ
Dear all,
I have a very simple question.I have data frame of 50 columns and i want to
insert a column in 30th position.But i do not want to delete that column.Is it
possible to include a column in between, so that new values are in 30th column
and 30 th column is now 31st and 31st is 32nd..
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