I have tried the diff and lag function.
I have given an example below. Diff gives me a$var2.shift.
I want a$var2.noshift, i.e. var^(t+2)-var^(t) should stay in the row with
year=t.
Diff shifts it to the t+2 row.
> a <- data.frame(c(rep(2,5), rep(3,5)), c(2005:2009, 2004:2008),
c(NA,10,34,23,12, 2
On Tue, May 8, 2012 at 12:14 PM, Apoorva Gupta wrote:
> I have checked that. It allows me to get the t-1, t-2 value but not the t+1
> value.
> Is there any other way of achieving this other than using the plm package?
>
It would be easier to help if you provided a minimal reproducible
example, as
I have checked that. It allows me to get the t-1, t-2 value but not the t+1
value.
Is there any other way of achieving this other than using the plm package?
On Mon, May 7, 2012 at 8:27 PM, Liviu Andronic wrote:
> On Mon, May 7, 2012 at 3:21 PM, Apoorva Gupta
> wrote:
> > Dear R users,
> > I am
On Mon, May 7, 2012 at 3:21 PM, Apoorva Gupta wrote:
> Dear R users,
> I am working with panel data and I want the difference of a variable with
> its t+1 value.
>
> Could you tell me if such a function exists in the plm package?
>
Perhaps diff() or lag(). See the plm vignette.
Liviu
_
Dear R users,
I am working with panel data and I want the difference of a variable with
its t+1 value.
For example, I have a data frame as below.
> a <- data.frame(c(rep(2,5), rep(3,5)), c(2005:2009, 2004:2008),
c(NA,10,34,23,12, 23,45, NA, 45, NA))
> colnames(a) <- c("firm","year","var")
I want
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