Simon Blomberg wrote:
How about to insert a variable a2 inbetween the first and second columns
of dat:
dat2 - cbind(dat[,1], a2=a2, dat[,2:3])
Where a2 is the new variable. This mangles the variable name for column
1, unfortunately. Surely someone else will offer a better solution.
Simon.
Thanks everyone
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This is no doubt a very basic question for most R users, but is there an easy
way to reorder the variables (columns) in a dataframe (I can't seem to find
an answer anywhere). I've generally been creating a new dataframe and
selecting the new order I want from the old but this is time-consuming.
Alphabetically, like this?:
dat - data.frame(d=rnorm(3), c=rnorm(3), b=rnorm(3), a=rnorm(3))
dat
d c b a
1 -0.1816733 -0.4106008 -0.2855991 -1.022951
2 -1.8326818 -0.6515208 0.3344884 -2.191836
3 1.0924867 0.1159611 -1.3409719 1.195545
dat2 -
Thanks Simon,
I should have explained myself better (although I didn't know about the
order function so that's handy information).
I've found a few times, I've added variables to a dataframe that I would
like to 'group' with variables earlier in the datset. So I was wondering if
you could
How about to insert a variable a2 inbetween the first and second columns
of dat:
dat2 - cbind(dat[,1], a2=a2, dat[,2:3])
Where a2 is the new variable. This mangles the variable name for column
1, unfortunately. Surely someone else will offer a better solution.
Simon.
On Wed, 2009-05-20 at
Following Simon's example
dat - data.frame(d=rnorm(3), c=rnorm(3), b=rnorm(3), a=rnorm(3))
dat
dat-subset(dat, select=c(d,a,b,c))
dat
Bests
milton
brazil=toronto
On Thu, May 21, 2009 at 12:02 AM, Simon Blomberg s.blombe...@uq.edu.auwrote:
How about to insert a variable a2 inbetween the first
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