[R] Recreate new dataframe based on condition

[Gabor Grothendieck]

Try this using DF since df is the name of an R function:

# test data from post
DF <-  structure(list(x = c(2, 4, 1, 3, 3, 2)), .Names = "x", row.names = c("1",
 "2", "3", "4", "5", "6"), class = "data.frame")


rowsum(DF, gl(nrow(DF),2,nrow(DF)))


On 7/14/06, Sachin J <sachinj.2006 at yahoo.com> wrote:
> Hi,
>
>  How can I achieve this in R. Dataset is as follows:
>
>  >df
>    x
> 1 2
> 2 4
> 3 1
> 4 3
> 5 3
> 6 2
>
>  structure(list(x = c(2, 4, 1, 3, 3, 2)), .Names = "x", row.names = c("1",
> "2", "3", "4", "5", "6"), class = "data.frame")
>
>  I want to recreate a new data frame whose rows are sum of (1&2, 3&4, 5&6) of original df. For example
>
>  >newdf
>     x
>  1 6
>  2 4
>  3 5
>
>  Thanx in advance for the help.
>
>  Sachin
>
>
>
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