[R] newbie question: p.values in a column

[Remington.Richard@epamail.epa.gov]

Hao

Using some fake data, here's a crude way to get the job done for 2 rows

temp <- matrix( runif(2*6, -2, 2), nrow=2)
out <- apply( temp, 1, t.test)
temp <- data.frame( temp, p.value=unlist(out)[ names( unlist( out))
== "p.value"])
temp


Richard Remington


Hao Chen wrote
>
> Hello,
>
> I have a vector (v) with 6 columns and 2000 rows. I am trying to do
one
> sample t.test for each row (I know this sounds crazy) and put the
> p.values into the 7th column.
>
> I know I can access the p.value via t.test(v[i,])[3]$p.value; I know I

> can do t.test on the row by apply(v, 1, t.test), but I just couldn't
> figure out how to fit them together.
>
> I'd very appreciate your help!!
>
> Hao Chen


-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._